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EM78P312NM 数据表(PDF) 21 Page - ELAN Microelectronics Corp |
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EM78P312NM 数据表(HTML) 21 Page - ELAN Microelectronics Corp |
21 / 68 page EM78P312N 8-Bit Microcontroller Product Specification (V1.0) 10.03.2006 • 17 (This specification is subject to change without further notice) In using the external clock, data input sample is fixed at the middle of data output time. Bit 6 ( DCOL ) : SPI Data collision. DCOL = “0” : No occurrence of Data collision DCOL = “1” : Data collision occurred. It should be cleared by software. Bit 5 ~ Bit 3 ( BRS0 ~ BRS2 ) : SPI Clock Source Select BRS2 BRS1 BRS0 Clock Source ( Normal, Idle ) Max. Transfer Rate ( Fc = 8MHz ) 0 0 0 Fc/2 13 0.95Kbit/s 0 0 1 Fc/2 11 3.8Kbit/s 0 1 0 Fc/2 10 7.6Kbit/s 0 1 1 Fc/2 8 30.5Kbit/s 1 0 0 Fc/2 6 122Kbit/s 1 0 1 Fc/2 5 244Kbit/s 1 1 0 External clock (/SCK pin) Enable /ss pin 1 1 1 External clock (/SCK pin) Disable /ss pin Bit 2 ( EDS ) : Data shift out edge select. EDS = “0” : Rising edge EDS = “1” : Falling edge Bit 1 ( DORD ) : Data transmission order. DORD = “0” : Shift left (MSB first) DORD = “1” : Shift right (LSB first) Bit 0 ( WBE ) : Write buffer empty flag. Read only. WBE = “0” : Write buffer empty WBE = “1” : Not empty, set to “1” automatically when writing data to the data buffer. Bank 3 R6 SPIC2 (SPI Control Register 2) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SPIS 0 0 0 0 SPIM1 SPIM0 RBF Bit 7 ( SPIS ) : SPI start shift, set the bit to “1” and shift register starts to shift. It is cleared by hardware when shifting is finished. In transferring the next data, it must be set to “1” again. SPIS = “0” : Finish shifting SPIS = “1” : Start shifting |
类似零件编号 - EM78P312NM |
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类似说明 - EM78P312NM |
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