EM73P361A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
EM73P361A I/O PORT DESCRIPTION :
Port
Input function
Output function
Note
0
1
2
3
4
E
Input port , wakeup function
--
--
--
--
--
--
E
Input port
E
Output port, P4.0/TONE,P4.1/WDT, P4(2..3)
/SEG(26..25)
5
6
7
E
E
E
Input port
Input port
Input port
E
E
E
P5(0..3)/SEG(24..21)
P6(0..3)/SEG(20..17)
P7(0..3)/SEG(16..13)
8
9
--
--
--
--
--
--
--
--
--
--
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
I
I
I
Address register of LCD display buffer
Address register of LCD display buffer
Data register of LCD display buffer
--
--
--
Sleep/Hold mode control register
--
--
--
lownibble
highnibble
I
--
I
Watch-dog-timer control register
--
Sound effect frequency register
Sound effect frequency register
Timebase control register
--
LCD control register
Timer/counter A control register
Timer/counter B control register
Sound effect command register
--
I
I
I
lownibble
highnibble
I
I
I
I
* This specification are subject to be changed without notice.
12.17.2001
22
ELAN [ ELAN MICROELECTRONICS CORP ]
