参数资料
型号: ST7FLITE19BF0B6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 109/159页
文件大小: 2855K
代理商: ST7FLITE19BF0B6
ST7LITE1xB
53/159
I/O PORTS (Cont’d)
10.7 DEVICE-SPECIFIC I/O PORT CONFIGURATION
The I/O port register configurations are summa-
rised as follows.
Standard Ports
PA7:0, PB6:0
PC1:0 (multiplexed with OSC1,OSC2)
The selection between OSC1 or PC0 and OSC2 or
PC1 is done by option byte. Refer to section 15.1
on page 149. Interrupt capability is not available
on PC1:0.
Note: PCOR not implemented but p-transistor al-
ways active in output mode (refer to Figure 32 on
Interrupt Ports
Ports where the external interrupt capability is
selected using the EISR register
Table 10. 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 11. 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
floating input
0
push-pull output
1
MODE
DDR
OR
floating input
0
pull-up interrupt input
0
1
open drain output
1
0
push-pull output
1
Port
Pin name
Input
Output
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:0
floating
pull-up
open drain
push-pull
Port B
PB6:0
floating
pull-up
open drain
push-pull
Port
Pin name
Input
Output
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:0
floating
pull-up interrupt
open drain
push-pull
Port B
PB6:0
floating
pull-up interrupt
open drain
push-pull
Address
(Hex.)
Register
Label
765
4321
0
0000h
PADR
Reset Value
MSB
11
1
1111
LSB
1
0001h
PADDR
Reset Value
MSB
00
0
0000
LSB
0
1
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