参数资料
型号: ST7PL38F2MC/XXXE
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, ROHS COMPLIANT, PLASTIC, SOP-20
文件页数: 115/168页
文件大小: 2955K
代理商: ST7PL38F2MC/XXXE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7L34, ST7L35, ST7L38, ST7L39
50/168
I/O PORTS (cont’d)
The I/O port register configurations are summa-
rized as follows.
Standard Ports
PA7:0, PB6:0
Interrupt Ports
Ports where the external interrupt capability is
selected using the EISR register
Table 11. Port Configuration (Standard Ports)
Note: On ports where the external interrupt capability is selected using the EISR register, the configura-
tion will be as follows:
Table 12. Port Configuration (External Interrupts)
Table 13. I/O Port Register Map and Reset Values
MODE
DDR
OR
floating input
0
pull-up input
0
1
open drain output
1
0
push-pull output
1
MODE
DDR
OR
floating input
0
pull-up interrupt input
0
1
Port
Pin name
Input (DDR = 0)
Output (DDR = 1)
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:0
floating
pull-up
open drain
push-pull
Port B
PB6:0
Port
Pin name
Input with interrupt (DDR = 0 ; EISR
≠ 00)
OR = 0
OR = 1
Port A
PA6:1
floating
pull-up
Port B
PB5:0
Address
(Hex.)
Register
Label
76543210
0000h
PADR
Reset Value
MSB
11
11111
LSB
1
0001h
PADDR
Reset Value
MSB
00
00000
LSB
0
0002h
PAOR
Reset Value
MSB
01
00000
LSB
0
0003h
PBDR
Reset Value
MSB
11
11111
LSB
1
0004h
PBDDR
Reset Value
MSB
00
00000
LSB
0
0005h
PBOR
Reset Value
MSB
00
00000
LSB
0
1
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