参数资料
型号: ST72651AR6T1E/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PQFP64
封装: 10 X 10 MM, ROHS COMPLIANT, TQFP-64
文件页数: 105/161页
文件大小: 2656K
代理商: ST72651AR6T1E/XXX
ST72651AR6
48/161
Doc ID 7215 Rev 4
I/O PORTS (Cont’d)
Table 13. I/O Port 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)
O
PEN-DRAIN
OUTPU
T
2)
P
U
SH-P
ULL
O
UTPU
T
2)
CONFIGURATION
PAD
VDD/VDDF
RPU
EXTERNAL INTERRUPT
POLARITY
DATA BUS
PULL-UP
INTERRUPT
DR REGISTER ACCESS
W
R
FROM
OTHER
PINS
SOURCE (eix)
SELECTION
DR
REGISTER
CONFIGURATION
ALTERNATE INPUT
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
ANALOG INPUT
PAD
RPU
DATA BUS
DR
DR REGISTER ACCESS
W
VDD/VDDF
ALTERNATE
ENABLE
OUTPUT
REGISTER
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
R
PAD
RPU
DATA BUS
DR
DR REGISTER ACCESS
VDD/VDDF
ALTERNATE
ENABLE
OUTPUT
REGISTER
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
R
W
1
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