EM78P159NM Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM78P159NM

8-Bit Microcontroller with OTP ROM

ELAN Microelectronics 

Contents

Contents

1 General Description .................................................................................................. 1

1.1 Comparison between EM78P159N, EM78P154N, and EM78P157N ................ 1

2 Features ..................................................................................................................... 1

3 Pin Assignments and Descriptions ......................................................................... 3

3.1 EM78P159NP and EM78P159NM Pin Description ............................................ 4

3-2 EM78P159NAS Pin Description ......................................................................... 4

3.3 EM78P159NKM Pin Description ........................................................................ 5

4 Function Description ................................................................................................ 6

4.1 Operational Registers......................................................................................... 6

4.1.1 R0 (Indirect Addressing Register) .......................................................................6

4.1.2 R1 (Time Clock /Counter)....................................................................................6

4.1.3 R2 (Program Counter) & Stack ...........................................................................7

4.1.4 R3 (Status Register) ............................................................................................8

4.1.5 R4 (RAM Select Register)...................................................................................9

4.1.6 R5 ~ R6 (Port 5 ~ Port 6) ....................................................................................9

4.1.7 RD (Manual Calibration Register) .......................................................................9

4.1.8 RE (Wake Up Control Register) ........................................................................10

4.1.9 RF (Interrupt Status Register) ...........................................................................10

4.1.10 R10 ~ R3F .........................................................................................................10

4.2 Special Purpose Registers ............................................................................... 11

4.2.1 A (Accumulator).................................................................................................11

4.2.2 CONT (Control Register)...................................................................................11

4.2.3 IOC5 ~ IOC6 (I/O Port Control Register) ..........................................................12

4.2.4 IOCA (Prescaler Counter Register)...................................................................12

4.2.5 IOCB (Pull-Down Control Register)...................................................................12

4.2.6 IOCC (Open-Drain Control Register) ................................................................13

4.2.7 IOCD (Pull-High Control Register) ....................................................................13

4.2.8 IOCE (WDT Control Register) ...........................................................................14

4.2.9 IOCF (Interrupt Mask Register).........................................................................15

4.3 TCC/WDT & Prescaler ..................................................................................... 15

4.4 I/O Ports ........................................................................................................... 16

4.4.1 Usage of Port 6 Input Change Wake-up/Interrupt Function..............................18

4.5 RESET and Wake-up ....................................................................................... 19

4.5.1 RESET ..............................................................................................................19

4.5.2 The Summary of the Initialized Values for Registers ........................................22

4.5.3 The Status of RST, T, and P of STATUS Register .............................................24

4.6 Interrupt ............................................................................................................ 25

Product Specification (V1.0) 03.10.2006

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