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| 型號： | EM78P451SWM |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | 8-Bit Microcontroller with OTP ROM |
| 中文描述： | 8位微控制器的OTP ROM的 |
| 文件頁數(shù)： | 28/54頁 |
| 文件大小： | 421K |
| 代理商： | EM78P451SWM |
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EM78P451S
8-Bit Microcontroller with OTP ROM
24
Product Specification (V1.0) 06.01.2004
(This specification is subject to change without further notice)
SPIS:
SPI Status register
Bit 4 (TM1IF):
Timer1 interrupt flag.
Bit 3 (OD3)
Open-Drain Control bit (P93)
0 = Open-drain disable for SDO.
1 = Open-drain enable for SDO,
Bit 2 (OD4):
Open Drain-Control bit (P94)
0 = Open-drain disable for SCK.
1 = Open-drain enable for SCK
Bit 1 (RBFIF):
Read Buffer Full Interrupt flag
1 = Receive is completed, SPIB is full, and an interrupt occurs if enabled.
0 = Receive is ongoing, SPIB is empty.
Bit 0 (RBF):
Read Buffer Full flag
0 = Receive is ongoingt, SPIB is empty.
1 = Receive is completed, SPIB is full.
4.5.5 SPI Mode Timing
The edge of SCK is selected by programming bit CES. The waveform shown in Fig.13
is applicable regardless of whether the EM78P451S is under master or slave mode
with /SS disabled. However, The waveform in Fig. 14 can only be implemented in slave
mode with /SS enabled.
Fig. 13 SPI Mode with /SS Disable
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