參數(shù)資料
型號： MC68HC916X1CTH16
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP120
封裝： QFP-120
文件頁數(shù)： 8/172頁
文件大?。?/td> 1200K
代理商： MC68HC916X1CTH16
MC68HC916X1
MOTOROLA
MC68HC916X1TS/D
105
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.
7.4 QSPI Submodule
The QSPI submodule communicates with external devices through a synchronous serial bus. The
QSPI is fully compatible with the serial peripheral interface (SPI) systems found on other Motorola
products. Figure 20 shows a block diagram of the QSPI.
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 56 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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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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