EM78862B Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM78862B

8-Bit RISC Type Microprocessor

ELAN Microelectronics 

Contents

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

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

2.1 CPU............................................................................................................................. 1

2.2 LCD............................................................................................................................. 2

3 Applications ............................................................................................................ 2

4 Pin Configurations.................................................................................................. 2

4.1 Pin Description.......................................................................................................... 3

5 Functional Block Diagram ..................................................................................... 4

6 Functional Descriptions......................................................................................... 5

6.1 Operational Registers............................................................................................... 5

6.1.1 R0 (Indirect Address Register) ................................................................................... 5

6.1.2 R1 (TCC).................................................................................................................... 5

6.1.3 R2 (Program Counter) ................................................................................................ 5

6.1.4 R3 (Status Register) ................................................................................................... 6

6.1.5 R4 (Register Bank Select Register)............................................................................ 7

6.1.6 R5 (Program Page Select Register) ........................................................................... 7

6.1.7 R6 (Port 6).................................................................................................................. 7

6.1.8 R7 (Port 7).................................................................................................................. 7

6.1.9 R8 (Port 8).................................................................................................................. 8

6.1.10 R9 (Port 9).................................................................................................................. 8

6.1.11 RA (Mode Control Register) ....................................................................................... 8

6.1.12 RB (Reserved)............................................................................................................ 9

6.1.13 RC (2K RAM Address)................................................................................................ 9

6.1.14 RD (2K RAM Data) ..................................................................................................... 9

6.1.15 RE (LCD Driver, WDT Control) ................................................................................... 9

6.1.16 RF (Interrupt Status Register)....................................................................................11

6.1.17 R10 ~ R1F and R20 ~ R3F (General Purpose Register) ...........................................11

6.2 Special Purpose Registers..................................................................................... 11

6.2.1 A (Accumulator, ACC)................................................................................................11

6.2.2 CONT (Control Register) ...........................................................................................11

6.2.3 IOC5 (Port 5 I/O Control Register)............................................................................ 12

6.2.4 IOC6 (Port 6 I/O Control Register)............................................................................ 12

6.2.5 IOC7 (Port 7 I/O Control Register)............................................................................ 13

6.2.6 IOC8 (Port 8 I/O Control Register)............................................................................ 13

6.2.7 IOC9 (Port 9 I/O Control Register)............................................................................ 13

EM78862B Specification

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