參數(shù)資料
型號: MC16V1CPU20B1
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 20.97 MHz, MICROCONTROLLER, PQFP100
封裝: TQFP-100
文件頁數(shù): 128/128頁
文件大?。?/td> 571K
代理商: MC16V1CPU20B1
MC68HC16V1
MOTOROLA
MC68HC16V1TS/D
99
DDRQS determines the direction of the TXD pin only when the SCI transmitter is disabled. When the
SCI transmitter is enabled, the TXD pin is an output.
1. PQS2 is a digital I/O pin unless the SPI is enabled (SPE in SPCR1 set), in which case it becomes
SPI serial clock SCK.
2. PQS7 is a digital I/O pin unless the SCI transmitter is enabled (TE in SCCR1 = 1), in which case it
becomes SCI serial output TXD.
Table 53 Effect of DDRQS on QSM Pin Function
QSM Pin
Mode
DDRQS Bit
Bit State
Pin Function
MISO
Master
DDQS0
0
Serial Data Input to QSPI
1
Disables Data Input
Slave
0
Disables Data Output
1
Serial Data Output from QSPI
MOSI
Master
DDQS1
0
Disables Data Output
1
Serial Data Output from QSPI
Slave
0
Serial Data Input to QSPI
1
Disables Data Input
SCK1
Master
DDQS2
0
Disables Clock Output
1
Clock Output from QSPI
Slave
0
Clock Input to QSPI
1
Disables Clock Input
PCS0/SS
Master
DDQS3
0
Assertion Causes Mode Fault
1
Chip-Select Output
Slave
0
QSPI Slave Select Input
1
Disables Select Input
PCS[3:1]
Master
DDQS[4:6]
0
Disables Chip-Select Output
1
Chip-Select Output
Slave
0
Inactive
1
Inactive
TXD2
Transmit
DDQS7
X
Serial Data Output from SCI
RXD
Receive
None
NA
Serial Data Input to SCI
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