参数资料
型号: MC68HC11ED0CP2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 92/108页
文件大小: 1672K
代理商: MC68HC11ED0CP2
Technical Summary
MC68HC11ED0 — Rev. 1.0
Serial Peripheral Interface (SPI)
Serial Peripheral Interface (SPI)
Figure 8-3. SPI Transfer Format
SPR[1:0] — SPI Clock Rate Select Bits
Refer to Table 8-1.
2345678
1
SCK (CPOL = 1)
SCK (CPOL = 0)
SCK CYCLE #
SS (TO SLAVE)
654321
LSB
MSB
654321
LSB
SAMPLE INPUT
DATA OUT
(CPHA = 0)
SAMPLE INPUT
DATA OUT
(CPHA = 1)
FOR REFERENCE
Table 8-1. SPI Clock Rate Selects
SPR[1:0]
Divide
E Clock By
Frequency at
E = 1 MHz
Frequency at
E = 2 MHz
Frequency at
E = 3 MHz
0 0
2
500 kHz
1.0 MHz
1.5 MHz
0 1
4
250 kHz
500 kHz
750 kHz
1 0
16
125 kHz
375 kHz
1 1
32
62.5 kHz
187.5 kHz
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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