参数资料
型号: M38514E6-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件页数: 9/93页
文件大小: 1137K
代理商: M38514E6-XXXFP
Rev.1.01
Oct 15, 2003
page 15 of 89
3851 Group (Built-in 24 KB or more ROM)
Fig. 11 Port block diagram (2)
(9) Port P23
Port latch
Direction
register
Data bus
Port latch
Direction
register
Data bus
Port latch
Direction
register
Data bus
Port latch
Direction
register
Data bus
Port latch
Direction
register
Data bus
(12) Port P26
Serial I/O1 synchronous
clock selection bit
Serial I/O1 enable bit
Serial I/O1 mode selection bit
Serial I/O1 clock output
Serial I/O1 external clock input
(14) Ports P30-P34
A-D converter input
Analog input pin selection bit
(16) Ports P41,P42
Interrupt input
(11) Port P25
(13) Port P27
Serial I/O1 enable bit
Serial I/O1 mode selection bit
Pulse output mode
SRDY1 output enable bit
Timer output
CNTR0 interrupt
input
Serial I/O1 ready output
Pulse output mode
(15) Port P40
Timer output
CNTR1 interrupt
input
Pulse output mode
(10) Port P24
SCL input
I2C-BUS interface enable bit
SDA/SCL pin selection bit
Serial I/O1 enable bit
Receive enable bit
SDA input
SDA output
Serial I/O1 output
SCL input
SCL output
P-channel output disable bit
Serial I/O1 enable bit
Transmit enable bit
Direction
register
Port latch
Data bus
Port latch
Direction
register
Direction
register
Data bus
SCL output
Serial I/O1 input
I2C-BUS interface enable bit
SDA/SCL pin selection bit
I2C-BUS interface enable bit
SDA/SCL pin selection bit
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