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IBM EM78P809N EM78P809N, 4.8.1 Serial Clock: , 4.8.2 Shift Direction and Sample Phase: , 4.8.3 Transfer Mode:

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EM78P809N

8-Bit Microcontroller

Product Specification (V1.0) 07.26 .2 005 • 37

(This specification is subject to change without further notice)

The serial interface are connected to external devices via P70 (/SCK), P71 (SI), P72

(SO). The serial interface can also be used as I/O port. In the transmit mode , P71 can

be used as normal I/O port and in receive mode, P72 and P71 ca n be used as normal

I/O ports.

4.8.1 Serial Clock:

Six internal clocks can be selected by setting BRS0 ~ BRS2 and the clock output to the

outside from /SCK (P70) pin. The External clock can also be used and connected t o

/SCK (P70) pin.

4.8.2 Shift Direction and Sample Phase:

Setting up the DORD bit of the SPIC1 register can determine the shift direction. Setting

up the EDS bit of the SPIC1 register can select the rising edge or falling ed ge and latch

the data. Setting up the SMP bit of the SPIC2 register can select the s ample phase at

the middle or at the end of the data output time.

4.8.3 Transfer Mode:

The transmit, receive, transmit/receive mode can be selected by setting SPIM0 ~

SPIM1.

(a) 8-bit Transmit Mode:

Set SPIM0 ~ SPIM12 to trans mit mode and write data to the data buffer SPID.

Set SPIS to “1” to start transmission. The data are output sequentially to the SO

pin in synchronous with the serial clock. When the final bit of transfer data has

been transferred, the SPI i nterrupt is generated and SPIS is cleared to “0” b y

hardware. In order to transmit the next data, the SPIS must be set to “1” again by

software. If the next data is not written to the data buffer, the transfer is not

started when using the internal clock .

SPI S

RBF

WBE

SPIF

shif t fi n ish

write data

shi f t st ar t shif t star t

SO p i n a0 a1 a2 a3 a4 a5 a6 a7

ab

SPID

b0 b1 b2 b3 b4 b5 b6 b7

write data

Fig. 15. Transmit Mode (8-bit, 1 word)

Contents

Main EM78P809N 8-BIT Microcontroller Product Specification DOC. VERSION 1.0 ELAN MCCROELECTRONICS CORP. All Rights Reserved Printed in Taiwan ELAN MICROELECTRONICS CORPORATION Contents Page 1 General Description 2 Features 2.1 CPU 2.2 Applications EM78P809N 8-Bit Microcontroller 3 Pin Assignment Fig. 1. Pin Assignment 4 Pin Description Table 1 Symbol Pin No. Type Function EM78P809N 8-Bit Microcontroller Symbol Pin No. Type Function 4 Function Description 4.1 Functional Block Diagram 8-Bit Microcontroller Fig. 3. Operating Registers 4.2 Operating Registers 05 06 07 08 09 0A 0B 0C 0D 0E 0F 01 10 : 1F 20 : 3F Page 8-Bit Microcontroller User Memory Space On-chip Program Memory A11 A10 A9 A8 A7 ~ A0 8 Product Specification (V1.0) 07.26.2005 Page Page Page Page Page Page Page Page Page Page Page Page Page Page 4.3 Special Purpose Registers Page Page Page 4.4 CPU Operation Mode Page 8-Bit Microcontroller * Dont care ** Interrupt request flag will be recorded 4.5 AD Converter Registers for AD Converter Circuit * R_BANK : Register Bank (bits 7, 6 of R3), R/W: Read / Write * SPR : Special Purpose Register s Page 8-Bit Microcontroller Table 5 4.6 Time Base Timer and Keytone Generator Registers for AD Converter Circuit D Q TBKTC MUX MUX 8-Bit Microcontroller Product Specification (V1.0) 07.26 .2 005 33 4.7 UART (Universal Asynchronous Receiver/Transmitter) Registers for UART Circuit R_BANK Address NAME Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Fig. 11. Function Block Diagram EM78P809N 4.7.1 UART MODE: Mode 3 Mode 1 Mode 2 EM78P809N 4.7.2 Transmitting: 4.7.3 Receiving: EM78P809N 8-Bit Microcontroller 4.8 SPI (Serial Peripheral Interface) Registers for the SPI Circuit R_BANK Address NAME Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Fig. 14. SPI Block Diagram EM78P809N 4.8.1 Serial Clock: SPID 4.8.2 Shift Direction and Sample Phase: 4.8.3 Transfer Mode: /SCK pin RBF WBE SPIF SPID SI p i n 8-Bit Microcontroller SPIS RBF WBE SPIF SPID shift start shift start SO pi n 4.9 Timer/Counter 2 Registers for Timer/Counter 2 Cir cuit R_BANK Address NAME Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 EM78P809N 4.9.1 Timer Mode: 4.9.2 Counter Mode: 4.10 Timer/Counter 3 EM78P809N 4.10.1 Timer Mode: 4.10.2 Counter Mode: 4.10.3 Capture mode: 4.11 Timer/Counter 4 EM78P809N 4.11.1 Timer Mode 4.11.2 Counter Mode 4.11.3 PDO Mode Source Clock Up-counter TCR4 TC4 Interrupt 4.12 TCC/WDT & Prescaler EM78P809N 4.13 I/O Ports 4.14 RESET and Wake-up 4.14.1 RESET EM78P809N 4.14.2 Wake-up from SLEEP Mode: 4.14.3 Wake-up from IDLE mode: 8-Bit Microcontroller Product Specification (V1.0) 07.26 .2 005 49 Table 6. Summary of the Initialized Values for Registers Address Name Reset Type Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 8-Bit Microcontroller 50 Product Specification (V1.0) 07.26.2005 Register Bank 0 Address Name Reset Type Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 8-Bit Microcontroller Product Specification (V1.0) 07.26 .2 005 51 Register Bank 1 Address Name Reset Type Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 8-Bit Microcontroller 52 Product Specification (V1.0) 07.26.2005 Register Bank 2 Address Name Reset Type Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bi t 0 EM78P809N 4.14.4 The Status of RST, T, and P of STATUS Register 4.15 Interrupt EM78P809N 4.16 Oscillator 4.16.1 Oscillat or Modes 4.16.2 Crystal Oscil lator/Ceramic Resonators (Crystal) Page EM78P809N 4.16.3 External RC Oscillator Mode EM78P809N 4.17 Code Option Register 4.17.1 Code Option Register (Word 0) EM78P809N 4.17.2 Customer ID Register 4.18 Power-on Considerations 4.18.1 External Power-on Reset Circuit EM78P809N 4.18.2 Residue-Voltage Protection 4.19 Instruction Set Page 8-Bit Microcontroller Note1: This instructi on is applicable to IOC6 ~ IOCA, IMR1, IMR2 onl y. 5 Absolute Maximum Ratings 5.1 Absolute Maximum Ratings 5.2 Recommended Operating Conditions ( Vss = 0V ) 8-Bit Microcontroller 6 Electrical Characteristics 6.1 DC Electrical Characteristics (Ta= 25 C, VDD= 5.0 V 5%, VSS= 0V) Symbol Parameter Condition Min. Typ. Max. Unit *The typical value is based on characterization results at 25C 8-Bit Microcontroller Product Specification (V1.0) 07.26 .2 005 65 (Ta= 25 C, VDD= 3.0 V 5%, VSS= 0V) Symbol Parameter Condition Min. Typ. Max. Unit 8-Bit Microcontroller 66 Product Specification (V1.0) 07.26.2005 A/D Converter Characteristic (VDD =2.5V to 5.5V, Vss=0V, Ta = -40 to 85) Symbol Parameter Condi tion Min. Typ. Max. Unit 6.2 AC Electrical Characteristic * N= selected prescaler ratio (Ta=- 40C ~ 85 C, VDD=5V 5%, VSS=0V) 68 Product Specification (V1.0) 07.26.2005 6.3 Timing Diagram RESET Timing (CLK="0") TCC Input Timing (CLKS="0") AC Test Input/Output Waveform APPENDIX Package Types: