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參數(shù)資料
| 型號(hào)： | 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)： | 30/44頁 |
| 文件大?。?/td> | 231K |
| 代理商： | EM73492 |
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EM73492
4-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
* This specification are subject to be changed without notice.
7.17.1998
SIO external clock recive mode with trailing edge shift type
PROGRAM EXAMPLE:
(1a) . To receive 4-bit data by extemal clock with leading edge shift mode .
LDIA #0101b;
OUTAP31 ; setting SIO in external clock receive mode with leading edge shift type.
LDIA #1101b ;
OUTA P31 ; start SIO transfer.
SIO external clock recive mode with leading edge shift type
STC
request to the interrupt service rountine to request read the transfer data from P15.
6. The SIOI interrupt request will be clear after CPU read the data from data buffer.
7. To stop current SIO receive mode is Sending STC(P31.3) "0" in interrupt service rountine, then the current
SIO transfer will be stoped, user can detect the SIO ending by SCSS ( P14.3) be "0".
NOTE:The leading edge shift mode is shift data in every leading edge of serial clock ( the falling edge of SCK
), for receive mode of leading edge type, user must put the data in P9.0/SI before the serial clock start.
STC
(1b) . To receive 4-bit data by external clock with trailing edge shift mode.
LDIA #0111b
OUTAP31 ; setting SIO in external clock receive mode with leading edge shift type.
LDIA #1111b;
OUTAP31 ; start SIO transfer.
(2a) . To terminate receive 4-bit data by external clock with leading edge shift mode .
LDIA #0100b;
OUTA P31 ; terminate SIO in external clock receive mode with leading edge shift type.
SIOEND: TTP P14,3
SIOS
SIOSS
SCK
SO
SIOI
PORT 15
D
D'
D0
D1
D2
D3
D'
0
D'
1
D'
2
D'
3
Read SIO data buffer (P15)
SIOS
SIOSS
SCK
SO
SIOI
PORT 15
D
D'
D0
D1
D2
D3
D'
0
D'
1
D'
2
D'
3
Read SIO data buffer (P15)
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