參數(shù)資料
型號(hào)： ST72331
廠商： 意法半導(dǎo)體
英文描述： 8-Bit MCU with 8 to 16K ROM/OTP/EPROM, 256 EEPROM, 384 to 512 Bytes RAM, ADC, WDG, SCI, SPI and 2 Timers(8位微控制器(8M))
中文描述： 8位微控制器與8至16K的光碟/雙層/存儲(chǔ)器，256的EEPROM，384字節(jié)RAM為512，藝發(fā)局，水分散粒劑，脊髓損傷，SPI和2計(jì)時(shí)器（8位微控制器（8米））
文件頁數(shù)： 28/98頁
文件大小： 1123K
代理商： ST72331
28/98
ST72331
I/O PORTS
(Cont’d)
Table 11. Port Configuration
Notes:
1. ST72331N only
2. For OTP/EPROM version, when OR=0: floating & when OR=1: reserved
3. For OTP/EPROM version, when OR=0: open-drain, high sink capability & when OR=1: reserved
* Reset state (The bits corresponding to unavailable pins are forced to 1 by hardware, this affects the reset status value).
Warning:
All bits of the DDR register which correspond to unconnected I/Os must be left at their reset value. They must
not be modified by the user otherwise a spurious interrupt may be generated.
Port
Pin name
Input (DDR = 0)
OR = 0
Output (DDR = 1)
OR = 0
OR = 1
OR =1
Port A
PA0:PA2
1)
floating*
pull-up with interrupt
open-drain
push-pull
PA3
floating*
pull-up with interrupt
open-drain
push-pull
PA4:PA7
floating*
true open drain, high sink capability
Port B
PB0:PB4
floating*
pull-up with interrupt
open-drain
push-pull
PB5:PB7
1)
floating*
pull-up with interrupt
open-drain
push-pull
Port C
PC0:PC7
floating*
pull-up
open-drain
push-pull
Port D
PD0:PD5
floating*
pull-up
open-drain
push-pull
PD6:PD7
1)
floating*
pull-up
open-drain
push-pull
Port E
PE0:PE1
floating*
pull-up
open-drain
push-pull
PE4:PE7
1)
floating*
2)
true open drain,
high sink capability
3)
Port F
PF0:PF2
floating*
pull-up with interrupt
open-drain
push-pull
PF4, PF6, PF7
floating*
pull-up
open-drain
push-pull
90
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