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參數(shù)資料
| 型號： | EM78P809NS |
| 廠商： | ELAN Microelctronics Corp . |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 42/75頁 |
| 文件大?。?/td> | 531K |
| 代理商： | EM78P809NS |
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EM78P809N
8-Bit Microcontroller
38
Product Specification (V1.0) 07.26.2005
(This specification is subject to change without further notice)
(b) 8-bit Receive Mode:
Setting SPIM0 ~ SPIM1 to receive mode and setting SPIS to “1” to start receiving.
The data are input sequentially from the SI pin in synchronous with the serial
clock. When the final bit of transfer data has been received, the SPI interrupt is
generated and SPIS is cleared to “0” by hardware. In order to receive the next
data, the SPIS must be set to “1” again by software. If the current data is not read
out from the data buffer, receiving is not started when using internal clock.
Fig. 16. Receive Mode (8-bit, 1 word)
(c) 8-bit Transmit/Receive Mode:
Set SPIM0 ~ SPIM1 to transmit/receive mode and write data to data buffer SPID.
Set SPIS to “1” to start transferring. The data are output to the SO pin and input
from the SI pin sequentially in synchronous with the serial clock. When the
number of data words specified has been transferred, the SPI interrupt is
generated and SPIS is cleared to “0” by hardware. In order to receive the next
data, the SPIS must be set to “1” again by software. Writing data in transmit
mode and reading data in receive mode use the same data buffer. If the current
data is not read out from the data buffer and then write the data to data buffer, the
transfer is not started when using internal clock. Always write the data to be
transmitted after reading the received data.
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