EM785840/5841/5842

8-bit Micro-controller

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* This specification is subject to change without notice.

6

2004/11/10

V1.2

VII. Functional Descriptions

VII.1 Operational Registers

Register configuration

R PAGE registers

Addr R PAGE0

R PAGE1

R PAGE2

R PAGE3

00

Indirect addressing

01

TCC

02

PC

03

Page, Status

04

RAM bank, RSR

05

Program ROM page

PWM control

06

Port6 I/O data

Duty of PWM1

07

Port7 I/O data

ADC MSB output

data

PWM1 control

Duty of PWM1

08

Period of PWM1

09

Port9 I/O data

Duty of PWM2

0A

PLL, Main clock,

WDTE

PWM2 control

Duty of PWM2

0B

ADC

output

data

buffer

Period of PWM2

0C

PortC I/O data

Counter1 data

0D

0E

Interrupt flag

0F

Interrupt flag

10

:

1F

16 bytes

Common registers

20

Bank0

Bank1

Bank2

Bank3

:

Common registers

3F

(32x8

for

each

bank)

*Address 00~0F with page0~page3 are special registers. Address 10~1F are global with general purpose memory. By

execute MOV instruction, MCU can read or write these register directly and RAM bank select bits (RB1, RB0 in R4

page0) will be ignored. Address 20~ 3F are general purpose RAM too, but user must indicate the bank number before

access data.