参数资料
型号: ST72774S9T1/XXX
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, PQFP44
封装: TQFP-44
文件页数: 67/144页
文件大小: 1280K
代理商: ST72774S9T1/XXX
ST72774/ST727754/ST72734
29/144
Figure 16. Input Structure for SYNC signals
4.1.3 Port A
PA7 and PA[2:0] can be defined as Input lines
(with pull-up) or as Push-pull Outputs.
PA [6:3] can be defined as Input lines (without pull-
up) or as Output Open drain lines.
PA7 and PA[2:0] can be defined as Input lines
(with pull-up) or as Push-pull Outputs.
PA [6:3] can be defined as Input lines (without pull-
up) or as Output Open drain lines.
Table 8. Port A Description
Pin
HSYNCI Input
I/O logic (if existing)
TTL trigger
(no pull-up)
Pin
CSYNCI Input
I/O logic (if existing)
TTL trigger
pull-up
VDD
VSYNCI Input
HFBACK Input
VFBACK Input
PORT A
I / O
Alternate Function
Input*
Output
Signal
Condition
PA0
With pull-up
push-pull
OCMP1
OC1E =1
(CR2[TIMER])
PA1
With pull-up
push-pull
-
PA2
With pull-up
push-pull
VSYNCI2
VSYNCSEL=1
(MISCR)
PA3
Without pull-up
open-drain
-
PA4
Without pull-up
open-drain
-
PA5
Without pull-up
open-drain
-
PA6
Without pull-up
open-drain
-
PA7
With pull-up
push-pull
BLANKOUT
BLKEN = 1
(ENR[SYNC])
*Reset State
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