參數(shù)資料
型號(hào)： M38507F8SP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁(yè)數(shù)： 22/103頁(yè)
文件大?。?/td> 1275K
代理商： M38507F8SP
Rev.3.01
2003.06.20
page 23 of 98
3850 Group (Spec.A)
Fig. 17 Port block diagram (2) (spec. A)
(9) Port P24
Port latch
Direction
register
Data bus
Serial I/O1 enable bit
Receive enable bit
Pull-up control bit
Serial I/O1 input
(11) Port P26
Pull-up control bit
Serial I/O1 synchronous
clock selection bit
Serial I/O1 enable bit
Serial I/O1 mode selection bit
Port latch
Direction
register
Data bus
Serial I/O1 clock output
External clock input
(13) Ports P04-P07, P30-P34
Pull-up control bit
Direction
register
Port latch
Data bus
A-D converter input
Analog input pin selection bit
Analog input port selection switch bit
(15) Ports P41,P42
Interrupt input
Pull-up control bit
Direction
register
Port latch
Data bus
(10) Port P25
P-channel output disable bit
Serial I/O1 enable bit
Transmit enable bit
Pull-up control bit
Serial I/O1 output
Port latch
Direction
register
Data bus
(12) Port P27
Serial I/O1 enable bit
Serial I/O1 mode selection bit
SRDY1 output enable bit
Pulse output mode
Pull-up control bit
Port latch
Direction
register
Data bus
Pulse output mode
Timer output
Serial ready output
CNTR0 interrupt
input
Pull-up control bit
(14) Port P40
Data bus
Direction
register
Port latch
Timer output
Pulse output mode
CNTR1 interrupt
input
(16) Port P43
Pull-up control bit
Serial I/O2 I/O
comparison signal control bit
Direction
register
Port latch
Data bus
Interrupt input
Serial I/O2 I/O
comparison signal output
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