EM78862C Просмотр технического описания (PDF) - ELAN Microelectronics

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EM78862C

8-Bit Microcontroller

ELAN Microelectronics 

Contents

Contents

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

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

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

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

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

3.1 Application Notes ......................................................................................................... 2

4 Pin Configurations.............................................................................................................. 3

4.1 Pin Description ............................................................................................................. 4

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

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

6.1 Operational Registers .................................................................................................. 6

6.1.1 R0 (Indirect Address Register) ...................................................................................... 6

6.1.2 R1 (TCC) ....................................................................................................................... 7

6.1.3 R2 (Program Counter) ................................................................................................... 7

6.1.4 R3 (Status Register) ...................................................................................................... 8

6.1.5 R4 (Register Bank Select Register) --- Page 0 ............................................................. 9

6.1.6 R5 (Program Page Select Register) --- Page 0............................................................. 9

6.1.7 R7 (Port7) --- Page 0 ..................................................................................................... 9

6.1.8 R8 (Port8) --- Page 0 ................................................................................................... 10

6.1.9 R9 (Port9) --- Page 0 ................................................................................................... 10

6.1.10 RA (Mode Control Register) --- Page 0 ....................................................................... 10

6.1.11 RA (LCD Address0~7) --- Page 1 ................................................................................ 12

6.1.12 RB (LCD Data Buffer) --- Page 1................................................................................. 12

6.1.13 RC (DATA RAM Data Buffer) ---Page 1..................................................................... 13

6.1.14 RD (DATA RAM Address0~7) --- Page 1..................................................................... 13

6.1.15 RE (KEYSCAN, LCD Control) --- Page 0 .................................................................... 13

6.1.16 RE (DATA RAM Address8 ~ 10) --- Page 1 ................................................................. 15

6.1.17 RF (INTERRUPT Flags*)............................................................................................. 15

6.1.18 R10 ~ R1F and R20 ~ R3F (General Purpose Registers) .......................................... 16

6.2 Special Purpose Registers ......................................................................................... 16

6.2.1 A (Accumulator, ACC).................................................................................................. 16

6.2.2 CONT (Control Register) ............................................................................................. 16

6.2.3 IOC5 (Port8 & Port9 Port Switch Register) --- Page 0 ................................................ 17

6.2.4 IOC7 (Port7 I/O Control Register) --- Page 0 .............................................................. 17

6.2.5 IOC8 (Port8 I/O Control Register) --- Page 0 .............................................................. 17

6.2.6 IOC9 (Port9 I/O Control Register) --- Page 0 .............................................................. 18

6.2.7 IOCA (CNT1 & CNT2 Clock Source and Scaling) --- Page 0...................................... 18

6.2.8 IOCA (PORT7 Pull-High Control Register) --- Page 1................................................. 19

6.2.9 IOCD (COUNTER 1 Data Buffer Register) --- Page 0................................................. 19

6.2.10 IOCE (COUNTER 2 Data Buffer Register) --- Page 0................................................. 19

Product Specification (V2.1) 07.13.2005

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