参数资料
型号: ST7PSCR1R4T1
厂商: 意法半导体
英文描述: 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
中文描述: 8位低功耗,全速USB微控制器与16K的闪存,768内存,智能卡的I /楼,计时器
文件页数: 31/102页
文件大小: 1413K
代理商: ST7PSCR1R4T1
ST7SCR
31/102
I/O PORTS
(Cont’d)
9.3 I/O Port Implementation
The hardware implementation on each I/O port de-
pends on the settings in the DDR register and spe-
cific feature of the I/O port such as true open drain.
9.3.1 Port A
Table 9. Port A Description
Figure 21. PA0, PA1, PA2, PA3, PA4, PA5 Configuration
Figure 22. PA6 Configuration
PORT A
I / O
Input
Output
PA[5:0]
without pull-up *
push-pull or open drain with software selectable pull-up
PA6
without pull-up
-
*Reset State
DR
DDR
LATCH
LATCH
DR SEL
DDR SEL
V
DD
PAD
ALTERNATE ENABLE
ALTERNATE ENABLE
ALTERNATE ENABLE
ALTERNATE
OUTPUT
ALTERNATE INPUT
PULL-UP
1)
P-BUFFER
N-BUFFER
1
0
1
0
CMOS SCHMITT TRIGGER
V
SS
V
DD
DIODES
D
Note 1:
selectable by PAPUCR register
DR SEL
PAD
V
DD
DIODES
D
CMOS SCHMITT TRIGGER
1
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