参数资料
型号: ST72T331N4T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP64
封装: PLASTIC, TQFP-64
文件页数: 32/107页
文件大小: 691K
代理商: ST72T331N4T1
30/107
ST72E331 ST72T331
I/O PORTS (Cont’d)
Table 11. Port Configuration
Notes:
1. ST72T331N 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)
Output (DDR = 1)
OR = 0
OR = 1
OR = 0
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*
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)
open drain, high sink capability3)
Port F
PF0:PF2
floating*
pull-up with interrupt
open-drain
push-pull
PF4, PF6, PF7
floating*
pull-up
open-drain
push-pull
30
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PDF描述
ST72E331J4D0 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP42
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