EM73982 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
MFG CO.
'EM73982' PDF : 41 Pages View PDF
EM73982
4-BIT MICROCONTROLLER
EM73982 I/O PORT DESCRIPTION :
Port
0E
1
2
3
4E
5
6E
7
8E
9
10
11
12
13
14
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
--
P6.3 : Speech Active pin
--
Input port, wakeup function,
external interrupt input
--
--
--
--
--
--
--
Output function
--
--
I P3(1..0) : ROM bank selection
E Output port, P4.0/SOUND
I P5(0..3) : Speech sample rate
I P6(0..3) : Speech ROM address
--
E Output port
I P9.3 : RAM bank selection
--
--
--
--
--
--
I Sleep/Hold mode control register
I Sound effect volume control register
--
--
--
--
--
I Sound effect frequency register
I Sound effect command register
I Timebase control register
--
I LCD control register
I Timer/counter A control register
I Timer/counter B control register
I Sound effect command register
--
NOTE : E : external
I : internal
Note
low nibble
high nibble
* This specification are subject to be changed without notice.
11.30.2001 28
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