Fujitsu F202RA, MB89202 3.4.5 Stack Operation at Interrupt Processing

41

CHAPTER 3 CPU

3.4.5 Stack Operation at Interrupt Processing

This section describes how values in registers are saved and restored at interrupt

processing.

■Stack Operation at the Beginning of Interrupt Processing

After accepting an interrupt, the CPU automatically saves the values in the program counter (PC) and

program status (PS) in the stack.

Figure 3.4-5 shows the stack operation at the beginning of interrupt processing.

Figure 3.4-5 Stack Operation at the Beginning of Interrupt Processing

■Stack Operation at the End of Interrupt Processing

When the return instruction (RETI) is executed at the end of interrupt processing, the values in the program

status (PS) and the program counter (PC) are restored from the stack in that order (which is opposite to that

at the beginning of interrupt processing). This operation restores the values in the PS and PC to those

values used before interruption.

Note:

Values in the accumulator (A) and temporary accumulator (T) are not automatically saved in the stack.

Therefore, save and restore the values using the PUSHW and POPW instructions.

027CHXXH

027DHXXH

027EHXXH

027FHXXH

0280HXXH

0281HXXH

027CH08H

027DH70H

027EHE0H

027FH00H

0280HXXH

0281HXXH

E000H

PC

0870H

PS

0280H

SP E000H

PC

0870H

PS

027CH

SP PS

PC

Immediately before

interruption

Address Memory Address Memory

Immediately after

interruption

Contents

Main Page Page Page PREFACE Page iii Copyright 2005-2008 FUJITSU LIMITED All rights reserved READING THIS MANUAL CONTENTS Page CHAPTER 8 8/16-BIT CAPTURE TIMER/COUNTER ................................................... 161 CHAPTER 10 EXTERNAL INTERRUPT CIRCUIT 1 (EDGE) ......................................... 225 CHAPTER 11 EXTERNAL INTERRUPT CIRCUIT 2 (LEVEL) ....................................... 243 Page Page Main changes in this edition Page Page 1.1 Features of MB89202/F202RA Series Page 1.2 MB89202/F202RA Series Product Lineup Page 1.3 Differences between Models 7 1.4 Block Diagram of MB89202/F202RA Series Port 7 Serial function switching Internal bus Figure 1.4-1 shows the block diagram of the MB89202/F202RA series. 1.5 Pin Assignment Figure 1.5-1 and Figure 1.5-2 show the pin assignment of the MB89202/F202RA series. Pin Assignment of DIP-32P-M06 Figure 1.5-1 Pin Assignment of DIP-32P-M06 9 Pin Assignment of FPT-34P-M03 Figure 1.5-2 Pin Assignment of FPT-34P-M03 Note: N.C.: Do not use because it is connected internally. 10 1.6 Package Dimensions Package Dimension of DIP-32P-M06 Figure 1.6-1 Package Dimension of DIP-32P-M06 32-pin plastic SH-DIP Lead pitch 1.778 mm Low space 10.16 mm Sealing method Plastic mold 32-pin plastic SH-DIP (DIP-32P-M06) (DIP-32P-M06) 11 Package Dimension of FPT-34P-M03 Figure 1.6-2 Package Dimension of FPT-34P-M03 (FPT-34P-M03) 2003 FUJITSU LIMITED F34003S-c-2-3 1.7 Pin Functions Description Page 1.8 I/O Circuit Types Page Page Page 2.1 Precautions on Handling Devices Page Page Page 3.1 Memory Space 23 Memory Map Figure 3.1-1 Memory Map 3.1.1 Specific-purpose Areas Page 3.1.2 Location of 16-bit Data on Memory Upper digits of 16-bit data and stack data are stored in lower addresses on memory. 3.2 Dedicated Register Page 3.2.1 Condition Code Register (CCR) Page 3.2.2 Register Bank Pointer (RP) XXXXXXXX RP CCR -- - X: Undefined 3.3 General-Purpose Registers Page 3.4 Interrupts Page 3.4.1 Interrupt Level Setting Registers (ILR1 to ILR4) 3.4.2 Steps in the Interrupt Operation Page 3.4.3 Multiple Interrupts 3.4.4 Interrupt Processing Time 3.4.5 Stack Operation at Interrupt Processing This section describes how values in registers are saved and restored at interrupt processing. 3.4.6 Stack Area for Interrupt Processing 3.5 Reset Page 45 3.5.1 Reset Flag Register (RSFR) The reset flag register (RSFR) allows confirmation of the source for a generated reset. 000EHPONR ERST WDOG SFTR XXXX----B R : Read only : Unused Page 3.5.2 External Reset Pin 48 3.5.3 Reset Operation Overview of the Reset Operation Figure 3.5-3 Reset Operation Flow Page 3.5.4 State of Each Pin at Reset 3.6 Clock 52 Figure 3.6-1 Clock Supply Map 3.6.1 Clock Generator The clock generator enables oscillation in active mode and disables oscillation in stop mode. 54 3.6.2 Clock Controller Standby control register (STBC) Page 56 3.6.3 System Clock Control Register (SYCC) Page 3.6.4 Clock Mode The clock speed is switched by selecting one of four frequency-divided source clocks (gears). Page 3.6.5 Oscillation Stabilization Wait Time X1 Page 3.7 Standby Mode (Low-Power Consumption Mode) 3.7.1 Operations in Standby Mode This section describes CPU and peripheral function operation in standby mode. 3.7.2 Sleep Mode This section describes sleep mode. 3.7.3 Stop Mode This section describes the stop mode. 66 3.7.4 Standby Control Register (STBC) Standby Control Register (STBC) Figure 3.7-1 Standby Control Register (STBC) Page 3.7.5 Diagram for State Transition in Standby Mode Figure 3.7-2 shows the state transition diagram in standby mode. Page 3.7.6 Notes on Standby Mode Page 3.8 Memory Access Mode The MB89202/F202RA series supports only single-chip mode for access to memory. Page Page Page 4.1 Overview of I/O Ports Page 4.2 Port 0 Page 4.2.1 Registers of Port 0 (PDR0, DDR0, and PUL0) This section describes the registers associated with port 0. Page 4.2.2 Operations of Port 0 Functions This section describes the operation of port 0. Page 4.3 Port 3 Page 4.3.1 Registers of Port 3 (PDR3, DDR3, PUL3) This section describes the registers associated with port 3. Page 4.3.2 Operations of Port 3 Functions This section describes the operation of port 3. Page 4.4 Port 4 Page 4.4.1 Registers of Port 4 (PDR4) This section describes the registers associated with port 4. 4.4.2 Operations of Port 4 Functions This section describes the operation of port 4. 4.5 Port 5 Page 4.5.1 Registers of Port 5 (PDR5, DDR5, PUL5) This section describes the registers associated with port 5. Page 4.5.2 Operations of Port 5 Functions This section describes the operation of port 5. Page 4.6 Port 6 101 CHAPTER 4 I/O PORTS Block Diagram of Port 6 Figure 4.6-1 Block Diagram of Port6 Pin For MB89202/V201 For MB89F202/F202RA Page 4.6.1 Registers of Port 6 (PDR6, DDR6, PUL6) This section describes the registers associated with port 6. Page 4.6.2 Operations of Port 6 Functions This section describes the operation of port 6. Page 4.7 Port 7 Page 4.7.1 Registers of Port 7 (PDR7, DDR7, PUL7) This section describes the registers associated with port 7. Page 4.7.2 Operations of Port 7 Functions This section describes the operation of port 7. Page 4.8 Programming Example of I/O Port This section provides an example of programming with I/O ports. Page Page 5.1 Overview of Time-base Timer Page 118 CHAPTER 5 TIME-BASE TIMER 5.2 Configuration of Time-base Timer Block Diagram of Time-base Timer Figure 5.2-1 Block Diagram of Time-base Timer 119 CHAPTER 5 TIME-BASE TIMER 5.3 Time-base Timer Control Register (TBTC) Time-base Timer Control Register (TBTC) Figure 5.3-1 Time-base Timer Control Register (TBTC) bit7 bit6 bit5 bit4 bit3bit2 bit1 bit0 000A 00---000 R/W R/W R/W R/W R/W Page 5.4 Interrupt of Time-base Timer 5.5 Operations of Time-base Timer Functions The time-base timer functions as an interval timer or supplies clocks to some peripherals. Page 5.6 Notes on Using Time-base Timer Notes on using the time-base timer are shown below. 5.7 Program Example for Time-base Timer Programming examples for the time-base timer are shown below. Page Page 6.1 Overview of Watchdog Timer 6.2 Configuration of Watchdog Timer 6.3 Watchdog Control Register (WDTC) The watchdog control register (WDTC) activates and clears the watchdog timer. bit7 bit6 bit5 bit4 bit3bit2 bit1 bit0 0009HRESVWTE3WTE2 WTE1WTE0 0---XXXXB R/W R/W R/W R/W R/W 6.4 Operations of Watchdog Timer Functions The watchdog timer generates a watchdog reset when the watchdog timer counter overflows. 6.5 Notes on Using Watchdog Timer Notes on using the watchdog timer are provided below. 6.6 Program Example for Watchdog Timer Programming examples for the watchdog timer are provided below. Page CHAPTER 7 8-BIT PWM TIMER This chapter describes the functions and operations of 8-bit PWM timer. 7.1 Overview of 8-bit PWM Timer Interval t 7.2 Configuration of 8-bit PWM Timer Page 7.3 Pin of 8-bit PWM Timer 7.4 Registers of 8-bit PWM Timer This section describes the registers related to the 8-bit PWM timer. bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 R/W R/W R/W R/W R/W R/W R/W 143 7.4.1 PWM Control Register (CNTR) PWM Control Register (CNTR) Figure 7.4-2 PWM Control Register (CNTR) Page 7.4.2 PWM Compare Register (COMR) Page 7.5 Interrupt of 8-bit PWM Timer 7.6 Operations of the Interval Timer Functions This section describes the operations of the interval timer functions of an 8-bit PWM timer. Page 7.7 Operations of the 8-bit PWM Timer Functions This section describes the operations of the 8-bit PWM timer functions. CNTR Page 7.8 States in Each Mode During Operation Page Page 7.9 Notes on Using 8-bit PWM Timer This section provides notes on using 8-bit PWM timer. 01H02H03H04H 00 Counter value Count clock One cycle Page 7.10 Program Example for PWM Timer This section describes program examples of an 8-bit PWM timer. Page Page Page Page 8.1 Overview of 8/16-bit Capture Timer/Counter 163 Internal count clock Page Page 166 8.2 Configuration of 8/16-bit Capture Timer/Counter Comparator Data register "L" Internal data bus 8-bit mode Page 8.3 Pins of 8/16-bit Capture Timer/Counter This section provides pins of 8/16-bit capture timer/counter and a block diagram for these pins. Page 170 8.4 Registers of 8/16-bit Capture Timer/Counter This section shows registers of 8/16-bit capture timer/counter. 171 8.4.1 Capture Control Register (TCCR) 0019H00000000B Capture Control Register (TCCR) Figure 8.4-2 Capture Control Register (TCCR) Page 173 8.4.2 Timer 0 Control Register (TCR0) Timer 0 Control Register (TCR0) Figure 8.4-3 Timer 0 Control Register (TCR0) Page 175 8.4.3 Timer 1 Control Register (TCR1) Timer 1 Control Register (TCR1) Figure 8.4-4 Timer 1 Control Register (TCR1) Page 8.4.4 Timer Output Control Register (TCR2) 8.4.5 Timer 0 Data Register (TDR0) R/W R/W R/W R/W R/W R/W R/W R/W R/W : Readable/Writable Page 8.4.6 Timer 1 Data Register (TDR1) R/W R/W R/W R/W R/W R/W R/W R/W R/W : Readable/Writable Page 8.4.7 Capture Data Registers H and L (TCPH and TCPL) 8.5 8/16-bit Capture Timer/Counter of Interrupts Page 8.6 Explanation of Operations of Interval Timer Functions This section describes the interval timer function operation of the 8/16-bit capture timer/ counter. Page 187 Figure 8.6-3 Interval Timer Function Operation in 8-bit Mode (Timer 0) Page 8.7 Operation of Counter Functions This section describes the operation of the 8/16-bit capture timer/counter function. 190 Page 192 Figure 8.7-4 Counter Function Operation in 16-bit Mode Confirm the validity of the values set in the counter operating in 16-bit mode. 8.8 Functions of Operations of Capture Functions This section describes the capture function operation of the 8/16-bit capture timer/ counter. Page 195 Figure 8.8-2 Capture Mode Operation Page 8.9 8/16-bit Capture Timer/Counter Operation in Each Mode 8.10 Notes on Using 8/16-bit Capture Timer/Counter This section provides notes on using the 8/16-bit capture timer/counter. Page 8.11 Program Example for 8/16-bit Capture Timer/Counter This section provides program examples of the 8/16-bit capture timer/counter. Page Page Page Page Page 9.1 Overview of 12-bit PPG Timer =10 2 0.32 s 207 208 9.2 Configuration of 12-bit PPG Timer Circuit Page 9.3 Pin of 12-bit PPG Timer Timer 9.4 Registers of 12-bit PPG Timer This section describes the registers associated with the 12-bit PPG timer. 9.4.1 12-bit PPG Control Register 1 (RCR21) R/W : Readable/Writable : Initial value 9.4.2 12-bit PPG Control Register 2 (RCR22) Readable/Writable 9.4.3 12-bit PPG Control Register 3 (RCR23) Page 9.4.4 12-bit PPG Control Register 4 (RCR24) Cycle period setting bits Compare value for the cycle period of 12-bit PPG outputs : Unused 9.5 Operations of 12-bit PPG Timer Functions 220 9.6 Notes on Using 12-bit PPG Timer This section provides notes on using the 12-bit PPG timer. Counter start 9.7 Program Example for 12-bit PPG Timer An example of 12-bit PPG timer programming is given below. Page Page 10.1 Overview of External Interrupt Circuit 1 227 10.2 Configuration of External Interrupt Circuit 1 Page 10.3 Pins of External Interrupt Circuit 1 230 Block Diagram of Circuitry Terminating at the Pins Associated with External Interrupt Internal data bus Circuit 1 231 10.4 Registers of External Interrupt Circuit 1 This section describes the registers associated with external interrupt circuit 1. 232 10.4.1 External Interrupt Control Register 1 (EIC1) Page Page 235 10.4.2 External Interrupt Control Register 2 (EIC2) Page 10.5 Interrupt of External Interrupt Circuit 1 Vector Table 10.6 Operations of External Interrupt Circuit 1 Page 10.7 Program Example for External Interrupt Circuit 1 An example of programming external interrupt circuit 1 is given below. Page Page 11.1 Overview of External Interrupt Circuit 2 11.2 Configuration of External Interrupt Circuit 2 11.3 Pins of External Interrupt Circuit 2 247 Circuit 2 External Interrupt Pins 11.4 Registers of External Interrupt Circuit 2 11.4.1 External Interrupt 2 Control Register (EIE2) Page 11.4.2 External Interrupt 2 Flag Register (EIF2) 11.5 Interrupt of External Interrupt Circuit 2 Vector Table 11.6 Operations of External Interrupt Circuit 2 Page 11.7 Program Example for External Interrupt Circuit 2 An example of programming external interrupt circuit 2 is given below. Page Page Page 12.1 Overview of A/D Converter 261 12.2 Configuration of A/D Converter Block Diagram of the A/D Converter Figure 12.2-1 Block Diagram of the A/D Converter Page 12.3 Pins of A/D Converter 264 Internal data bus Figure 12.3-2 Block Diagram of P43/AN3 to P40/AN0 Pins 265 12.4 Registers of A/D Converter Figure 12.4-1 shows the registers related to the A/D converter. Registers Related to the A/D Converter Figure 12.4-1 Registers Related to the A/D Converter 266 12.4.1 A/D Control Register 1 (ADC1) A/D Control Register 1 (ADC1) Figure 12.4-2 A/D Control Register 1 (ADC1) A/D conversion functions are activated. Page 268 12.4.2 A/D Control Register 2 (ADC2) A/D Control Register 2 (ADC2) Figure 12.4-3 A/D Control Register 2 (ADC2) Page 12.4.3 A/D Data Register (ADDH and ADDL) 12.4.4 A/D Enable Register (ADEN) 12.5 Interrupt of A/D Converter 12.6 Operations of A/D Converter Functions The A/D converter can be activated with software or activated continuously. Page 12.7 Notes on Using A/D Converter This section describes notes on using the A/D converter. Page 12.8 Program Example for A/D Converter This section shows a program example of the 10-bit A/D converter. Page Page 13.1 Overview of UART Page Page Page 284 13.2 Configuration of UART Block Diagram of UART Figure 13.2-1 Block Diagram of UART Page Page 13.3 Pins of UART 288 Block Diagram of the UART-relating Pins Figure 13.3-1 Block Diagram of UART-relating Pins Internal data bus 289 13.4 Registers of UART Figure 13.4-1 shows the UART-relating registers. UART-relating Registers Figure 13.4-1 UART-relating Registers 290 13.4.1 Serial Mode Control Register (SMC) Serial Mode Control Register (SMC) Figure 13.4-2 Serial Mode Control Register (SMC) Page 292 13.4.2 Serial Rate Control Register (SRC) Serial Rate Control Register (SRC) Figure 13.4-3 Serial Rate Control Register (SRC) Page 294 13.4.3 Serial Status and Data Register (SSD) Serial Status and Data Register (SSD) Figure 13.4-4 Serial Status and Data Register (SSD) Page Page 13.4.4 Serial Input Data Register (SIDR) The serial input data register (SIDR) is for inputting (receiving) serial data. 13.4.5 Serial Output Data Register (SODR) The serial output data register (SODR) sends out (transmits) serial data. 299 13.4.6 Clock Divider Selection Register (UPC) Clock Divider Selection Register (UPC) Figure 13.4-8 Clock Divider Selection Register (UPC) Page 13.4.7 Serial Switch Register (SSEL) Page 13.5 Interrupt of UART 13.6 Operations of UART Functions Page 13.6.1 Transmission Operations (Operating Mode 0, 1, 2, and 3) 13.6.2 Reception Operations (Operating Mode 0, 1, or 3) Page 13.6.3 Reception Operations (Operating Mode 2 Only) Page 13.7 Program Example for UART This section provides program example for UART. Page CHAPTER 14 8-BIT SERIAL I/O This chapter describes the functions and operation of the 8-bit serial I/O. 14.1 Overview of 8-Bit Serial I/O 315 14.2 Configuration of 8-Bit Serial I/O Block Diagram of 8-bit Serial I/O Figure 14.2-1 Block Diagram of 8-bit Serial I/O Page 14.3 Pins of 8-Bit Serial I/O 8-bit serial I/O pins include P32/UI/SI, P31/UO/SO, and P30/UCK/SCK pins. Page 14.4 Registers of 8-Bit Serial I/O Figure 14.4-1 shows 8-bit serial I/O registers. 320 14.4.1 Serial Mode Register (SMR) Serial Mode Register (SMR) Figure 14.4-2 Serial Mode Register (SMR) Page Page 14.4.2 Serial Data Register (SDR) 14.5 Interrupt of 8-Bit Serial I/O An 8-bit serial I/O interrupt is caused by completion of 8-bit serial data I/O. 14.6 Operations of Serial Output Functions Page 14.7 Operations of Serial Input Functions In the 8-bit serial I/O, 8-bit serial input operation synchronized with a shift clock is possible. Page 14.8 8-Bit Serial I/O Operation in Each Mode Page Page Page 14.9 Notes on Using 8-Bit Serial I/O This section provides notes on using the 8-bit serial I/O. 14.10 Example of 8-Bit Serial I/O Connection 335 Figure 14.10-2 Bidirectional Serial I/O Operation 14.11 Program Example for 8-Bit Serial I/O This section provides program example for 8-bit serial I/O. Page Page Page 15.1 Overview of the Buzzer Output /2 Output frequency = F = 12.5 MHz/1024 12.21 kHz 15.2 Configuration of the Buzzer Output 15.3 Pin of the Buzzer Output The pin related to the buzzer output is P37/BZ/PPG. 343 CHAPTER 15 BUZZER OUTPUT 15.4 Buzzer Register (BZCR) Buzzer Register (BZCR) Figure 15.4-1 Buzzer Register (BZCR) Page 15.5 Program Example for Buzzer Output This section shows an program example for buzzer output. Page Page 16.1 Overview of the Wild Register Function 16.2 Configuration of the Wild Register Function 350 CHAPTER 16 WILD REGISTER FUNCTION 16.3 Registers of the Wild Register Function Figure 16.3-1 shows the registers related to the wild register function. 16.3.1 Data Setting Registers (WRDR0 and WRDR1) 16.3.2 Higher Address Set Registers (WRARH0 and WRARH1) 16.3.3 Lower Address Set Registers (WRARL0 and WRARL1) 16.3.4 Address Comparison EN Register (WREN) Page 16.4 Operations of the Wild Register Functions This section describes the operation order of the wild register. CHAPTER 17 FLASH MEMORY 17.1 Overview of Flash Memory 359 CHAPTER 17 FLASH MEMORY 17.2 Flash Memory Control Status Register (FMCS) Automatic algorithm Termination timing RDYINT bit RDY bit 17.3 Starting the Flash Memory Automatic Algorithm 17.4 Confirming the Automatic Algorithm Execution State 17.4.1 Data Polling Flag (DQ7) 17.4.2 Toggle Bit Flag (DQ6) 17.4.3 Timing Limit Exceeded Flag (DQ5) 17.4.4 Toggle Bit-2 Flag (DQ2) 17.5 Detailed Explanation of Writing to Erasing Flash Memory 17.5.1 Setting The Read/Reset State 17.5.2 Writing Data 370 CHAPTER 17 FLASH MEMORY Figure 17.5-1 Example of the Flash Memory Write Procedure 17.5.3 Erasing All Data (Erasing Chips) 17.6 Flash Security Feature 17.7 Notes on using Flash Memory This section provides notes on using the MB89F202, especially for flash memory. Page APPENDIX APPENDIX A I/O Map Page Page Page APPENDIX B Overview of the Instructions This section describes the instructions used for the F2MC-8L. Page Page B.1 Addressing Page Page Page B.2 Special Instructions This section describes the special instructions other than addressing. Page Page Page B.3 Bit Manipulation Instructions (SETB and CLRB) 392 APPENDIX B Overview of the Instructions B.4 F2MC-8L Instructions List Table B.4-1 to Table B.4-4 list the instructions used by the F2MC-8L. Transfer Instructions Table B.4-1 List of Transfer Instructions (1 / 2) 393 Table B.4-1 List of Transfer Instructions (2 / 2) Page 395 Table B.4-2 List of Operation Instructions (2 / 4) 396 APPENDIX B Overview of the Instructions Table B.4-2 List of Operation Instructions (3 / 4) (A) (AL) (TL) 397 Branch Instructions Table B.4-2 List of Operation Instructions (4 / 4) Table B.4-3 List of Branch Instructions if N=1 then PC PC+rel if N=0 then PC PC+rel Page 399 B.5 Instruction Map Table B.5-1 shows the instruction map of the F2MC-8L. Instruction Map Table B.5-1 Instruction Map of the F2MC-8L APPENDIX C Mask Options Table C-1 lists the mask options of the MB89202/F202RA series. APPENDIX D Programming EPROM with Evaluation Chip This section describes how to program EPROM with evaluation chip. APPENDIX E Pin State of the MB89202/F202RA Series Table E-1 describes the pin states in each operation mode of the MB89202/F202RA series. Page Index