参数资料
型号: ST7PLITE15BF0B3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 107/159页
文件大小: 2855K
代理商: ST7PLITE15BF0B3
ST7LITE1xB
51/159
I/O PORTS (Cont’d)
Table 9. I/O Configurations
Notes:
1. When the I/O port is in input configuration and the associated alternate function is enabled as an output,
reading the DR register will read the alternate function output status.
2. When the I/O port is in output configuration and the associated alternate function is enabled as an input,
the alternate function reads the pin status given by the DR register content.
Hardware Configuration
INPUT
1)
OPEN-DRAIN
O
U
TPUT
2)
PUS
H
-PULL
O
UTPUT
2)
CONDITION
PAD
EXTERNAL INTERRUPT
POLARITY
DATA BUS
INTERRUPT
DR REGISTER ACCESS
W
R
FROM
OTHER
PINS
SOURCE (eix)
SELECTION
DR
REGISTER
ALTERNATE INPUT
ANALOG INPUT
To on-chip peripheral
COMBINATIONAL
LOGIC
PAD
DATA BUS
DR
DR REGISTER ACCESS
R/W
REGISTER
PAD
DATA BUS
DR
DR REGISTER ACCESS
R/W
ALTERNATE
ENABLE
OUTPUT
REGISTER
BIT
From on-chip periphera
l
1
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