參數(shù)資料
型號: M37542F8SP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
封裝: 8.9 X 28 MM, 1.78 MM PITCH, PLASTIC, SDIP-32
文件頁數(shù): 42/124頁
文件大?。?/td> 1238K
代理商: M37542F8SP
7542 Group
Rev.3.03
Jul 11, 2008
Page 22 of 117
REJ03B0006-0303
Fig. 21 Block diagram of ports (2)
(8) Port P10
Direction
register
Data bus
Port latch
Serial I/O1 enable bit
Receive enable bit
Serial I/O1 input
Capture 0 input control
P10, P12, P13
input level
selection bit
Capture 0 input
P10, P12, P13, P36, and P37 input level are switched to the CMOS/TTL level by the port P1P3 control register.
When the TTL level is selected, there is no hysteresis characteristics.
(9) Port P11
Data bus
Port latch
Serial I/O1 output
P11/TxD1 P-channel output disable bit
Direction
register
Serial I/O1 enable bit
Transmit enable bit
(10) Port P12
Serial I/O1 clock output
Serial I/O1 mode selection bit
Serial I/O1 enable bit
Serial I/O1 synchronous
clock selection bit
Direction
register
Data bus
Port latch
Serial I/O1 clock input
P10, P12, P13
input level
selection bit
*
(12) Port P14
Data bus
Serial I/O1 ready output
Port latch
Direction
register
CNTR0 interrupt input
Timer output
P10, P12, P13
input level
selection bit
Serial I/O1 mode selection bit
Serial I/O1 enable bit
SRDY1 output enable bit
Data bus
Port latch
Direction
register
*
(11) Port P13
Data bus
Port latch
Direction
register
A/D converter input
Analog input pin
selection bit
(13) Ports P20–P27
*
Pulse output mode
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