参数资料
型号: ST72311J2B6/XXX
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, PDIP42
封装: 0.600 INCH, SHRINK, PLASTIC, DIP-42
文件页数: 20/92页
文件大小: 624K
代理商: ST72311J2B6/XXX
27/92
ST72311
I/O PORTS (Cont’d)
Figure 20
. I/O Block Diagram
Table 10. Port Mode Configuration
Legend:
0 -
present, not activated
1 -
present and activated
Notes:
– No OR Register on some ports (see register map).
– ADC Switch on ports with analog alternate functions.
DR
DDR
LATCH
DATA
BUS
DR SEL
DDR SEL
VDD
PAD
ANALOG
SWITCH
ANALOG ENABLE
(ADC)
M
U
X
ALTERNATE
ALTERNATE ENABLE
COMMON
ANALOG
RAIL
ALTERNATE
M
U
X
ALTERNATE INPUT
PULL-UP (SEE TABLE BELOW)
OUTPUT
P-BUFFER
(SEE TABLE BELOW)
N-BUFFER
1
0
1
0
OR
LATCH
OR SEL
FROM
OTHER
BITS
EXTERNAL
PULL-UP
CONDITIO N
ENABLE
GND
(SEE TABLE BELOW)
(SEE NOTE BELOW)
CMOS
SCHMITT TRIGGER
SOURCE (EIx)
INTERRUPT
POLARITY
SEL
Configuratio n Mode
Pull-up
P-buffer
Floating
0
Pull-up
1
0
Push-pull
0
1
True Open Drain
not present
Open Drain (logic level)
0
27
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