参数资料
型号: Q80C32E-20SHXXX:R
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 20 MHz, MICROCONTROLLER, CQFP44
封装: CERAMIC, QFP-44
文件页数: 39/46页
文件大小: 7004K
667
32117D–AVR-01/12
AT32UC3C
Figure 26-8. Peripheral Deselection
Figure 26-8 on page 667 shows different peripheral deselection cases and the effect of the
CSRn.CSAAT and CSRn.CSNAAT bits.
26.7.3.9
Mode fault detection
The SPI is capable of detecting a mode fault when it is configured in master mode and NPCS0,
MOSI, MISO, and SPCK are configured as open drain through the I/O Controller with either
internal or external pullup resistors. If the I/O Controller does not have open-drain capability,
mode fault detection must be disabled by writing a one to the Mode Fault Detection bit in the MR
A
NPCS[0..3]
Write TDR
TDRE
NPCS[0..3]
Write TDR
TDRE
NPCS[0..3]
Write TDR
TDRE
DLYBCS
PCS = A
DLYBCS
DLYBCT
A
PCS = B
B
DLYBCS
PCS = A
DLYBCS
DLYBCT
A
PCS = B
B
DLYBCS
DLYBCT
PCS=A
A
DLYBCS
DLYBCT
A
PCS = A
A
DLYBCT
AA
CSAAT = 0 and CSNAAT = 0
DLYBCT
AA
CSAAT = 1 and CSNAAT= 0 / 1
A
DLYBCS
PCS = A
DLYBCT
AA
CSAAT = 0 and CSNAAT = 1
NPCS[0..3]
Write TDR
TDRE
PCS = A
DLYBCT
AA
CSAAT = 0 and CSNAAT = 0
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