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IBM EM78P312N Time Base Timer and Keytone Generator, Bit Microcontroller, Tbktc, Fosc/2, TONE Pin

Models: EM78P312N

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5.6 Time Base Timer and Keytone Generator

EM78P312N

8-Bit Microcontroller

5.6 Time Base Timer and Keytone Generator

Registers for AD Converter Circuit

R_BANK

Address

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bank 1

0X0E

TBKTC

TEN

TCK1

TCK0

0

TBTEN

TBTCK2

TBTCK1

TBTCK0

R/W

R/W

R/W

--

R/W

R/W

R/W

R/W

Bank 0

0x0F

ISFR2

0

UERRIF

RBFF

TBEF

TBIF

EXIF1

0

TCIF0

0

R/W

R/W

R/W

R/W

R/W

0

R/W

SPR

0x0F

IMR2

0

UERRIE

URIE

UTIE

TBIE

EXIE1

0

TCIE0

0

R/W

R/W

R/W

R/W

R/W

0

R/W

Output Latch

Output Enable (P63)

Data Output

D

Q

Fosc/213

/TONE Pin

Fosc/212

MUX

11

Fosc/2

Fosc/210

TEN

TCK1:0

2

TBKTC

Fig. 5-6 Tone Output Pin Configuration

The Keytone output can generate 50% duty pulse for driving a piezo-electric buzzer. The P63 must be set to “1” before the keytone is enabled and it can be halted by setting P63 to “0”.

P63

TEN

TONE Pin

Fig. 5-7 Tone Output Pin Timing Chart

26 •	Product Specification (V1.0) 10.03.2006

(This specification is subject to change without further notice)

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IBM EM78P312N manual Time Base Timer and Keytone Generator, Bit Microcontroller, Tbktc, Fosc/2, TONE Pin, TCK10

Contents

8-BIT Microcontroller Green Product SpecificationEM78P312N ELAN MICROELECTRONICS CORPELAN MICROELECTRONICS CORPORATION Copyright 2006 by ELAN Microelectronics CorporationAll Rights Reserved General Description ContentsFeatures Pin AssignmentSpecification Revision History APPENDIXPin Assignment 2 Features1 General Description EM78P312NEM78P312N Pin DescriptionSymbol 8-Bit MicrocontrollerFig. 5-1 Functional Block Diagram 5.1 Functional Block Diagram5 Function Description This specification is subject to change without further noticeEM78P312N 5.2 Operating RegistersThis specification is subject to change without further notice 8-Bit MicrocontrollerR1 Time Clock /Counter EM78P312N8-Bit Microcontroller R0 Indirect Addressing Register R2 Program Counter & StackUser Memory Space EM78P312N8-Bit Microcontroller R3 Status RegisterBit 0 C Carry flag R4 RAM Select Register EM78P312N8-Bit Microcontroller R5 System Control RegisterEM78P312N RB Timer/Counter 4 Control RegisterBit 7 ~ Bit 6 TC4FF1 ~ TC4FF0 Timer/Counter 4 flip-flop control 8-Bit Microcontroller R6 Port 6 I/O Data RegisterEM78P312N Bit 4 ~ Bit 2 TC4CK2 ~ TC4CK 0 Timer/Counter 4 Clock Source SelectRC Timer 4 Data Buffer 8-Bit MicrocontrollerEM78P312N 8-Bit Microcontroller RE Interrupt Status Flag RegisterRFInterrupt Status Flag Register TC3M = “1” Capture mode Bank 1 R6 TC3DA Timer 3 Data Buffer A Bank 1 R5 TC3CR Timer/Counter 3 Control RegisterBit 5 ~ Bit 4 TC3CK1 ~ TC3CK0 Timer/Counter 3 Clock Source Select Bank 1 R7 TC3DB Timer 3 Data Buffer BBank 1 RA TC2DL Timer 2 Data Buffer Low Byte Bit 2 ~ Bit 0 TC2CK2 ~ TC2CK0 Timer/Counter 2 Clock Source SelectBank 1 R9 TC2DH Timer 2 Data Buffer High Byte TC2M Timer/Counter 2 mode selectEM78P312N ADP = “0” Power on ADP = “1” Power downBit 7 ~ Bit 0 ADE7 ~ ADE0 AD input pin enable control 8-Bit MicrocontrollerBit 2 ~ Bit 0 TBTCK2 ~ TBTCK0 Time Base Timer Clock Source Select TEN = “0” Disable TEN = “1” EnableTBTEN = “0” Disable TBTEN = “1” Enable EM78P312N8-Bit Microcontroller TXE = “0” Disable TXE = “1” EnableEM78P312N Bit 4 ~ Bit 2 BRATE2 ~ BRATE1 Transmit Baud Rate SelectEM78P312N PRE = “0” Disable PRE = “1” Enable Bit 4 PRERR Parity error flagBit 0 RXE Enable receiving RXE = “0” Disable RXE = “1” Enable 8-Bit MicrocontrollerBit 5 ~ Bit 3 BRS0 ~ BRS2 SPI Clock Source Select EM78P312N8-Bit Microcontroller EDS = “0” Rising edge EDS = “1” Falling edgeBit 2 ~ Bit 1 SPIM1 ~ SPIM0 SPI Transfer Mode Select EM78P312N8-Bit Microcontroller BankPHE7x = “1” Disable P7x pull high 5.3 Special Purpose RegistersPHE7x = “0” Enable P7x pull high WDTE = “0” Disable WDTE = “1” Enable8-Bit Microcontroller Bit 2 PSR2 ~ Bit 0 PSR0 TCC prescaler bits Bit 6 INT0EN INT0 enable control INT0EN = “0” General I/OEM78P312N IOC6 ~ IOC9 − I/O Port Control RegisterADOSCR − AD Offset Control Register Address 0Ch EM78P312N8-Bit Microcontroller Bit 5 ~ Bit 3 VOF2 ~ VOF0 Offset voltage bits8-Bit Microcontroller Bit 1 SPIE SPI Interrupt enable bitEM78P312N IMR2 − Interrupt Mask Register 2 Address 0Fh5.4 CPU Operation Mode EM78P312N8-Bit Microcontroller 8-Bit Microcontroller 5.5 AD ConverterEM78P312N Table 4. Wake-up MethodsADC Data Register EM78P312N8-Bit Microcontroller A/D Sampling TimeFig. 5-7 Tone Output Pin Timing Chart 5.6 Time Base Timer and Keytone GeneratorFig. 5-6 Tone Output Pin Configuration EM78P312NEM78P312N Fig. 5-8 TBT ConfigurationFig. 5-9 Time Base Timer Timing Chart 8-Bit MicrocontrollerEM78P312N 5.7 UART Universal Asynchronous Receiver/TransmitterFig. 5-10 Function Block Diagram 8-Bit MicrocontrollerEM78P312N 5.7.1 UART Mode5.7.2 Transmitting 8-Bit MicrocontrollerEM78P312N 5.7.3 Receiving5.7.4 Baud Rate Generator 8-Bit MicrocontrollerThis specification is subject to change without further notice 5.8 SPI Serial Peripheral InterfaceFig. 5-13 SPI Block Diagram EM78P312N5.8.3 Transfer Mode 5.8.2 Shift Direction and Sample Phase5.8.1 Serial Clock EM78P312NEM78P312N 8-Bit Microcontroller b 8-bit Receive Modec 8-bit Transmit/Receive Mode d Multiple Device Connect /SS EM78P312N8-Bit Microcontroller SCK pinFig. 5-18 Configuration of Timer/Counter 5.9 Timer/CounterRegisters for Timer/Counter 2 Circuit EM78P312N5.9.3 Window Mode 5.9.1 Timer Mode5.9.2 Counter Mode EM78P312NFig. 5-21 Window Mode Timing Chart 5.10 Timer/CounterRegisters for Timer/Counter 3 Circuit EM78P312N5.10.3 Capture Mode 5.10.1 Timer Mode5.10.2 Counter Mode EM78P312N5.11 Timer/Counter EM78P312N8-Bit Microcontroller 5.11.3 PDO Mode 5.11.1 Timer Mode5.11.2 Counter Mode EM78P312NEM78P312N 5.12 TCC/WDT & Prescaler5.11.4 PWM Mode 8-Bit Microcontroller5.13 I/O Ports 5.14 Reset and Wake-up5.14.1 Reset EM78P312NEM78P312N 5.14.2 Wake-up from Sleep Mode5.14.3 Wake-up from Idle Mode 8-Bit MicrocontrollerEM78P312N Reset TypeThis specification is subject to change without further notice 8-Bit MicrocontrollerEM78P312N Reset TypeThis specification is subject to change without further notice 8-Bit Microcontroller Register BankEM78P312N Reset TypeThis specification is subject to change without further notice 8-Bit Microcontroller Register BankThis specification is subject to change without further notice Reset TypeReset Type EM78P312N5.14.4 The Status of RST, T, and P of the Status Register EM78P312N8-Bit Microcontroller General Purpose Registers 5.15 Interrupt EM78P312N8-Bit Microcontroller 5.16.2 Crystal Oscillator/Ceramic Resonators Crystal 5.16 Oscillator5.16.1 Oscillator Modes EM78P312NOSCI EM78P312N8-Bit Microcontroller XTAL8-Bit Microcontroller 5.16.3 External RC Oscillator ModeEM78P312N Crystal/Resonator-Parallel Mode CircuitENWDTB = “0” Enable ENWDTB = “1” Disable 5.17 Code Option Register5.17.1 Code Option Register Word EM78P312N5.17.2 Customer ID Register 5.18 Power-on Considerations5.18.1 External Power-on Reset Circuit HLP = “0” Low power HLP = “1” High powerEM78P312N 5.18.2 Residue-Voltage ProtectionRESET 8-Bit Microcontroller5.19 Instruction Set EM78P312N8-Bit Microcontroller EM78P312N 8-Bit Microcontroller6.2 Recommended Operating Conditions 6 Absolute Maximum Ratings6.1 Absolute Maximum Ratings EM78P312NEM78P312N 7 Electrical Characteristics7.1 DC Electrical Characteristics 8-Bit MicrocontrollerEM78P312N 8-Bit MicrocontrollerTa= 25 C, VDD= 3.0V ± 5%, VSS= EM78P312N 8-Bit Microcontroller8-Bit Microcontroller 7.2 AC Electrical CharacteristicEM78P312N Ta=- 40C ~ 85 C, VDD=5V ± 5%, VSS=0VThis specification is subject to change without further notice 7.3 Timing DiagramRESET Timing CLK=0 EM78P312N8-Bit Microcontroller APPENDIX A Package TypesEM78P312N OTP MCU