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| 型号： | ST7PLITEUS5U3TR |
| 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, DSO8 |
| 封装： | LEAD FREE, DFN-8 |
| 文件页数： | 76/108页 |
| 文件大小： | 1957K |
| 代理商： | ST7PLITEUS5U3TR |
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ST7LITEUSx
7/108
PIN DESCRIPTION (Cont’d)
Legend / Abbreviations for Table 1:
Type: I = input, O = output, S = supply
In/Output level: CT= CMOS 0.3VDD/0.7VDD with
input trigger
Output level: HS = High sink (on N-buffer only)
Port and control configuration:
– Input:float = floating, wpu = weak pull-up, int = in-
terrupt, ana = analog
– Output: OD = open drain, PP = push-pull
The RESET configuration of each pin is shown in
bold which is valid as long as the device is in reset
state.
Table 1. Device Pin Description
Note:
1. After a reset, the multiplexed PA3/RESET pin will act as RESET. To configure this pin as output (Port
A3), write 55h to MUXCR0 and AAh to MUXCR1. For further details, please refer to section 6.4 on page
24.
Pin
No.
Pin Name
Type
Level
Port / Control
Main
Function
(after
reset)
Alternate Function
Input
Output
Input
Output
fl
oat
wpu
int
ana
OD
PP
1VDD
S
Main power supply
2
PA5/AIN4/
CLKIN
I/O CT HS
X
ei4
X
Port A5
Analog input 4 or External Clock Input
3
PA4/AIN3
I/O CT HS
X
ei3
X
Port A4
Analog input 3
4
PA3/RESET 1)
O
X
XX
Port A3
RESET 1)
5
PA2/AIN2/LTIC I/O CT HS
X
ei2
X
Port A2
Analog input 2 or Lite Timer Input Cap-
ture
6
PA1/AIN1/
ICCCLK
I/O CT HS
X
ei1
X
Port A1
Analog input 1 or In Circuit Communica-
tion Clock
Caution: During normal operation this
pin must be pulled-up, internally or ex-
ternally (external pull-up of 10k manda-
tory in noisy environment). This is to
avoid entering ICC mode unexpectedly
during a reset. In the application, even if
the pin is configured as output, any re-
set will put it back in pull-up
7
PA0/AIN0/ATP-
WM/ICCDATA
I/O CT HS
X
ei0
X
Port A0
Analog input 0 or Auto-Reload Timer
PWM or In Circuit Communication Data
8VSS
S
Ground
1
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