STM8L101 STMICROELECTRONICS [STMicroelectronics], STM8L101 Datasheet - Page 20

• Manufacturer Part Number: STM8L101
• Description: 8-bit ultralow power microcontroller with up to 8 Kbytes Flash multifunction timers, comparators, USART, SPI, I2C
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Pin description
Table 4.
20/81
1
2
3
-
-
-
4
5
6
-
-
-
1
2
-
-
-
3
4
5
6
-
-
-
Pin number
4
5
6
-
-
-
7
8
9
-
-
-
1
2
3
4
5
-
6
7
8
9
10 10 11
11 11 12
Table 3.
STM8L101xx pin description
Type
Level
Port and control
configuration
Reset state
1
2
3
4
-
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
NRST/PA1
PA2
PA3
PA4/TIM2_BKIN
PA5/TIM3_BKIN
PA6/COMP_REF
V
V
PD0/TIM3_CH2/
COMP1_CH3
PD1/TIM3_TRIG/
COMP1_CH4
PD2/
COMP2_CH3
PD3/
COMP2_CH4
SS
DD
Legend/abbreviation for table 4
Pin name
I= input, O = output, S = power supply
Input
Output
Input
Output
Bold X (pin state after reset release).
Unless otherwise specified, the pin state is the same during the reset phase (i.e.
“under reset”) and after internal reset release (i.e. at reset state).
(2)
I/O
I/O X
I/O X
I/O X
I/O X
I/O X
S
S
I/O X
I/O X
I/O X
I/O X
CM = CMOS
HS = high sink/source (20 mA)
float = floating, wpu = weak pull-up
T = true open drain, OD = open drain, PP = push pull
Doc ID 15275 Rev 11
Input
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
HS
HS
HS
HS
HS
HS
HS
HS
HS
HS
Output
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Reset
Port A2
Port A3
Port A4
Port A5
Port A6
Ground
Power supply
Port D0
Port D1
Port D2
Port D3
PA1
Timer 2 - break input
Timer 3 - break input
Comparator external
reference
Timer 3 - channel 2 /
Comparator 1 -
channel 3
Timer 3 - trigger /
Comparator 1 -
channel 4
Comparator 2 -
channel 3
Comparator 2 -
channel 4
Alternate function
STM8L101xx