Datasheet

ST7LITE0xY0, ST7LITESxY0
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PIN DESCRIPTION (Cont’d)
Legend / Abbreviations for Table 1:
Type: I = input, O = output, S = supply
In/Output level: C= CMOS 0.15V
DD
/0.85V
DD
with input trigger
C
T
= CMOS 0.3V
DD
/0.7V
DD
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
Type
Level Port / Control
Main
Function
(after reset)
Alternate Function
QFN20
SO16/DIP16
Input
Output
Input Output
float
wpu
int
ana
OD
PP
18 1 V
SS
S Ground
19 2 V
DD
S Main power supply
1 3 RESET
I/O C
T
X X Top priority non maskable interrupt (active low)
20 4 PB0/AIN0/SS
I/O C
T
X ei3 X X X Port B0
ADC Analog Input 0 or SPI Slave
Select (active low)
6 5 PB1/AIN1/SCK I/O C
T
X XXXXPort 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 C
T
X XXXXPort B2
ADC Analog Input 2 or SPI Mas-
ter In/ Slave Out Data
7 7 PB3/AIN3/MOSI I/O C
T
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 C
T
X XXXXPort B4
ADC Analog Input 4 or External
clock input
9 9 PA7 I/O C
T
X ei1 X X Port A7
10 10
PA6 /MCO/
ICCCLK
I/O C
T
X X XXPort 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 C
T
HS X XXXPort A5 In Circuit Communication Data
12 12 PA4 I/O C
T
HS X XXXPort A4
14 13 PA3 I/O C
T
HS X XXXPort A3
1