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STX-RLINK Datasheet(PDF) 7 Page - STMicroelectronics

Part No. STX-RLINK
Description  8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST7LITE0xY0, ST7LITESxY0
7/124
PIN DESCRIPTION (Cont’d)
Legend / Abbreviations for Table 1:
Type:
I = input, O = output, S = supply
In/Output level: C= CMOS 0.15VDD/0.85VDD with input trigger
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 1), ana = analog
– Output:
OD = open drain, PP = push-pull
Table 1. Device Pin Description
Pin n°
Pin Name
Level
Port / Control
Main
Function
(after reset)
Alternate Function
Input
Output
18
1
VSS
S
Ground
19
2
VDD
S
Main power supply
1
3
RESET
I/O
CT
X
X
Top priority non maskable interrupt (active low)
20
4
PB0/AIN0/SS
I/O
CT
X
ei3
X
X
X
Port B0
ADC Analog Input 0 or SPI Slave
Select (active low)
6
5
PB1/AIN1/SCK
I/O
CT
X
XX
X
X
Port B1
ADC Analog Input 1 or SPI Clock
Caution: No negative current in-
jection allowed on this pin. For
details, refer to section 13.2.2 on
page 82
5
6
PB2/AIN2/MISO
I/O
CT
X
XX
X
X
Port B2
ADC Analog Input 2 or SPI Mas-
ter In/ Slave Out Data
7
7
PB3/AIN3/MOSI
I/O
CT
X
ei2
X
X
X
Port B3
ADC Analog Input 3 or SPI Mas-
ter Out / Slave In Data
8
8
PB4/AIN4/CLKIN
I/O
CT
X
XX
X
X
Port B4
ADC Analog Input 4 or External
clock input
9
9
PA7
I/O
CT
X
ei1
X
X
Port A7
10
10
PA6 /MCO/
ICCCLK
I/O
CT
X
X
XX
Port A6
Main Clock Output/In Circuit
Communication Clock.
Caution: During normal opera-
tion this pin must be pulled- up,
internally or externally (external
pull-up of 10k mandatory in noisy
environment). This is to avoid en-
tering ICC mode unexpectedly
during a reset. In the application,
even if the pin is configured as
output, any reset will put it back in
input pull-up
11
11
PA5/
ICCDATA
I/O CT HS
X
XX
X
Port A5
In Circuit Communication Data
12
12 PA4
I/O CT HS
X
XX
X
Port A4
14
13 PA3
I/O CT HS
X
XX
X
Port A3
1




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