参数资料
型号: ST72621J2T1
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, PDSO20
封装: 0.300 INCH, PLASTIC, SO-20
文件页数: 64/136页
文件大小: 2475K
代理商: ST72621J2T1
ST7262
33/136
I/O PORTS (Cont’d)
9.2.5 Port A
Table 9. Port A Description
Figure 26. PA[7:0] Configuration
PORT A
I/O
Alternate Function
Input*
Output
Signal
Condition
PA0
floating
push-pull
USBOE
USBOE = 1 (MISC)
IT1 Schmitt triggered input
IT1E = 1 (ITRFRE1)
AIN0 (ADC)
CS[2:0] = 000 (ADCCSR)
PA1
floating
push-pull
IT2 Schmitt triggered input
IT2E = 1 (ITRFRE1)
AIN1 (ADC)
CS[2:0] = 001 (ADCCSR)
PA2
floating
push-pull
IT3 Schmitt triggered input
IT3E = 1 (ITRFRE1)
AIN2 (ADC)
CS[2:0] = 010 (ADCCSR)
PA3
floating
push-pull
IT4 Schmitt triggered input
IT4E = 1 (ITRFRE1)
AIN3 (ADC)
CS[2:0] = 011 (ADCCSR)
PA4
floating
push-pull
AIN4 (ADC)
CS[2:0] = 100 (ADCCSR)
PA5
floating
push-pull
AIN5 (ADC)
CS[2:0] = 101 (ADCCSR)
PA6
floating
push-pull
AIN6 (ADC)
CS[2:0] = 110 (ADCCSR)
PA7
floating
push-pull
AIN7 (ADC)
CS[2:0] = 111 (ADCCSR)
*Reset State
DR
DDR
LATCH
DR SEL
DDR SEL
VDD
PAD
ANALOG
SWITCH
ANALOG ENABLE
(ADC)
ALTERNATE ENABLE
DIGITAL ENABLE
ALTERNATE ENABLE
ALTERNATE
ALTERNATE INPUT
OUTPUT
P-BUFFER
N-BUFFER
1
0
1
0
VSS
DA
T
A
B
U
S
COMMON
A
N
A
L
OG
RA
IL
VDD
DIODES
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