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(yè)數(shù)： 29/44頁(yè)
文件大小： 231K
代理商： EM73492
EM73492
4-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
29
* This specification are subject to be changed without notice.
7.17.1998
PROGRAM EXAMPLE:
(1a) . To receive 4-bit data by internal clock with leading edge shift mode .
LDIA
#0100b;
OUTA P31 ; setting SIO in internal clock receive mode with leading edge shift type.
LDIA
#1100b
OUTA P31 ; start SIO transfer
(1b) . To receive 4-bit data by internal clock with trailing edge shift mode .
LDIA
#0110b
OUTA P31 ; setting SIO in internal clock receive mode with leading edge shift type.
LDIA
#1110b
OUTA P31 ; start SIO transfer.
(2a) . To terminate receive 4-bit data by internal clock with leading edge shift mode .
LDIA #0100b;
OUTA P31 ; terminate SIO internal clock receive mode with leading edge shift type.
SIOEND: TTP P14,3
SBR SIOEND; Check SIO ending; SCSS=0.
(2b) . To terminate receive 4-bit data by intemal clock with trailing edge shift mode .
LDIA #0110b;
OUTA P31 ; terminate SIO internal clock receive mode with trailing edge shift type .
SIOEND: TTP P14,3
SBR SIOEND; Check SIO ending; SCSS=0
b. External clock type:
Receive mode with external clock type is transfer 4-bit data from outside system to SIO data buffer of CPU
by extemal clock source, There are two types of external clock receive mode; one is data shift in leading edge,
the other in trailing edge, these different condition setting is decided by P31 .
The operation procedure of receive mode with external clock is as following.
1. Setting the receive mode and type by setting P31 = 0 1 X 1 .
2. Start SIO transfer by setting P31 = 11 X 1 .
3. By the external clock, SIO control start to transfer 4-bit data into shift register from LSB to MSB from P9.0/
SI pin until the shift register is full ,then shift register send data to SIO data buffer.
4. As SIO processing, user can get the SIO status by P14.
5. When SIO data buffer (P15) becomes full, the SIO control unit will send a SIOI interrupt request
SIO external clock receive mode with trailing edge shift type
STC
SIOS
SIOSS
SCK
SI
SIOI
PORT 15
D
D'
D0
D1
D2
D3
D'
0
D'
1
D'
2
D'
3
Read SIO data buffer (P15)
相關(guān)PDF資料
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EM73675 4-Bit Micro-Controller for Telecom Product(用于數(shù)字電話應(yīng)答控制器，工作電壓4.5V-5.5V的4位微控制器)
EM73676 4-Bit Micro-Controller for Telecom Product(用于數(shù)字電話應(yīng)答控制器，工作電壓4.5V-5.5V的4位微控制器)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EM73866 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
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EM73963A 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
EM73982 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:4-BIT MICROCONTROLLER
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