參數(shù)資料
型號: EM73492
廠商: ELAN Microelctronics Corp .
英文描述: 4-Bit Micro-Controller for Telecom Product(用于通訊產(chǎn)品和家用電器,工作電壓為2.2V-5.5V的4位微控制器)
中文描述: 4位微控制器的電信產(chǎn)品(用于通訊產(chǎn)品和家用電器,工作電壓為2.2伏至5.5V的4位微控制器)
文件頁數(shù): 34/44頁
文件大小: 231K
代理商: EM73492
34
EM73492
4-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
* This specification are subject to be changed without notice.
7.17.1998
EM73492 I/O PORT DESCRIPTION :
Port
0
1
2
3
4
5
6
7
8
9
Input function
Input port , wakeup, R-option
--
--
Input pin
Input port, R-option
Input port, R-option
Input port, R-option
Input port, R-option
Input port, external interrupt input
Input port
P9.0 is shared with SIO input
P9.2 is shared with SIO clock
--
--
--
--
Output function
Note
E
I
I
E
E
E
E
E
E
E
DTMF row register
DTMF column register
P3.0, output pin
Output port
Output port, R-option
Output port, R-option
Output port, R-option
Output port
Output port
P9.1 is shared with SIO output
P9.2 is shared with SIO clock
Extended RAM address register
Extended RAM address register
Extended RAM data buffer
P13(0,1):Extended RAM command register
P13.3: DTMF control register
--
--
Sleep mode control register
E
E
E
E
E
E
E
10
11
12
13
I
I
I
I
low nibble
middle nibble
14
15
16
17
18
19
20
E
P14.0, input pin, wakeup function
--
I
--
I
I
E
Extended RAM address register
BEEP control register
Output port
P20.0 : BEEP output pin
P20.3 : R-option control register
--
--
--
--
Timebase control register
--
--
Timer/counter A control register
Timer/counter B control register
--
SIO control register
high nibble
I
21
22
23
24
25
26
27
28
29
30
31
I
I
I
I
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