參數(shù)資料
型號(hào)： ST72124J2B7
廠商： 意法半導(dǎo)體
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
中文描述： 8位單電壓閃存，ADC和16位定時(shí)器，SPI和脊髓損傷界面微控制器
文件頁數(shù)： 44/125頁
文件大?。?/td> 776K
代理商： ST72124J2B7
ST72334J/N, ST72314J/N, ST72124J
44/125
I/O PORTS
(Cont’d)
6.1.3 I/O Port Implementation
The I/O port register configurations are summa-
rised as following.
Standard Ports
PA5:4, PC7:0, PD7:0, PE7:4, PE1:0, PF7:6, PF4
Interrupt Ports
PA2:0, PB6:4, PB2:0, PF1:0
(with pull-up)
PA3, PB7, PB3, PF2
(without pull-up)
Switching these I/O ports from one state to anoth-
er should be done in a sequence that prevents un-
wanted side effects. Recommended safe transi-
tions are illustrated in Figure 33 Other transitions
are potentially risky and should be avoided, since
they are likely to present unwanted side-effects
such as spurious interrupt generation.
Figure 33. Interrupt I/O Port State Transition
True Open Drain Ports
PA7:6
Table 9. Port Configuration
MODE
DDR
OR
floating input
pull-up input
open drain output
push-pull output
0
0
1
1
0
1
0
1
MODE
DDR
OR
floating input
pull-up interrupt input
open drain output
push-pull output
0
0
1
1
0
1
0
1
MODE
DDR
OR
floating input
floating interrupt input
open drain output
push-pull output
0
0
1
1
0
1
0
1
MODE
DDR
floating input
open drain (high sink ports)
0
1
01
pull-up/floating
interrupt
INPUT
00
floating
(reset state)
INPUT
10
open-drain
OUTPUT
11
push-pull
OUTPUT
XX
= DDR, OR
Port
Pin name
Input
Output
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:6
PA5:4
PA3
PA2:0
PB7, PB3
PB6:4, PB2:0
PC7:0
PD7:0
PE7:4, PE1:0
PF7:6, PF4
PF2
PF1:0
floating
true open-drain
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
pull-up
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
floating interrupt
pull-up interrupt
floating interrupt
pull-up interrupt
pull-up
pull-up
pull-up
pull-up
floating interrupt
pull-up interrupt
Port B
Port C
Port D
Port E
Port F
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參數(shù)描述
ST72124J2B7/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T1/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
ST72124J2T3 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
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