EM73983 Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM73983

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

EM73983

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

EM73983 I/O PORT DESCRIPTION :

Port

0E

1

2

3

4E

5I

6

7I

8E

9

10

11

12

13

14 I

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Input function

Input port , wakeup function

--

--

--

Input port

P5.3 : Speech active signal (ACT)

--

DATA ROM data

Input port, wakeup function,

external interrupt input

--

--

--

--

--

CPU status register

--

Output function

--

--

I P3(1..0) : ROM bank selection

E Output port

I Speech sample rate register

I Speech start address register

I Data start address register

E Output port

I P9.3 : RAM bank selection

--

--

--

--

--

--

I STOP mode control register

I Sound effect volume control register

--

I IDLE mode control register

--

I WDT control register

I DUAL/SLOW mode control register

I Sound effect frequency register

I Sound effect frequency register

I Timebase control register

I LCD common start address register

I LCD control register

I Timer/counter A control register

I Timer/counter B control register

I Sound effect command register

--

Note

low nibble

high nibble

* This specification are subject to be changed without notice.

10.31.2000 28

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