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ST7LITE3 Datasheet(PDF) 6 Page - STMicroelectronics

Part No. ST7LITE3
Description  8-BIT MCU WITH SINGLE VOLTAGE FLASH, DATA EEPROM, ADC, TIMERS, SPI, LINSCI
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST7LITE3
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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 = 20mA high sink (on N-buffer only)
Port and control configuration:
– Input:
float = floating, wpu = weak pull-up, int = interrupt, 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
Pin
No.
Pin Name
Level
Port / Control
Main
Function
(after
reset)
Alternate Function
Input
Output
1
VSS
S
Ground
2
VDD
S
Main power supply
3
RESET
I/O CT
X
X
Top priority non maskable interrupt (active low)
4
PB0/AIN0/SS
I/O
CT
X
ei3
X
X
X
Port B0
ADC Analog Input 0 or SPI Slave Select
(active low)
Caution: No negative current injection
allowed on this pin. For details, refer to
section 13.2.2 on page 130
5
PB1/AIN1/SCK I/O
CT
X
X
X
X
Port B1
ADC Analog Input 1 or SPI Serial Clock
Caution: No negative current injection
allowed on this pin. For details, refer to
section 13.2.2 on page 130
6
PB2/AIN2/MISO I/O
CT
X
X
X
X
Port B2
ADC Analog Input 2 or SPI Master In/
Slave Out Data
7
PB3/AIN3/MOSI I/O
CT
X
ei2
X
X
X
Port B3
ADC Analog Input 3 or SPI Master Out
/ Slave In Data
8
PB4/AIN4/
CLKIN**
I/O
CT
X
X
X
X
X
Port B4
ADC Analog Input 4 or External clock
input
9
PB5/AIN5
I/O
CT
X
ei2
X
X
X
Port B5
ADC Analog Input 5
10 PB6/AIN6/RDI
I/O
CT
X
X
X
X
Port B6
ADC Analog Input 6 or LINSCI Input
11 PA7/TDO
I/O CT HS
X
X
X
X
Port A7
LINSCI Output
1




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