STM8L151G4Y3 STMICROELECTRONICS [STMicroelectronics], STM8L151G4Y3 Datasheet - Page 34

• Manufacturer Part Number: STM8L151G4Y3
• Description: 8-bit ultralow power MCU, up to 32 KB Flash, 1 KB Data EEPROM RTC, LCD, timers, USART, I2C, SPI, ADC, DAC, comparators
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Pin description
Table 5.
1. At power-up, the PA1/NRST pin is a reset input pin with pull-up. To be used as a general purpose pin (PA1), it can be
2. Available on STM8L152xx devices only.
3. [ ] Alternate function remapping option (if the same alternate function is shown twice, it indicates an exclusive choice not a
4. In the 5 V tolerant I/Os, protection diode to V
5. A pull-up is applied to PB0 and PB4 during the reset phase. These two pins are input floating after reset release.
6. In the open-drain output column, ‘T’ defines a true open-drain I/O (P-buffer and protection diode to V
7. Available on STM8L151xx devices only.
8. The PA0 pin is in input pull-up during the reset phase and after reset release.
9. High Sink LED driver capability available on PA0.
4.1
34/122
40
1
number
configured only as output open-drain or push-pull, not as a general purpose input. Refer to Section Configuring NRST/PA1
pin as general purpose output in the STM8L15x reference manual (RM0031).
duplication of the function).
implemented).
Pin
32 28 A4
-
-
- V
STM8L15x pin description (continued)
System configuration options
As shown in
on different I/O ports by programming one of the two remapping registers described in the “
Routing interface (RI) and system configuration controller” section in the STM8L15xxx
reference manual (RM0031).
PA0
SWIM/BEEP/IR_TIM
SS2
(8)
/[USART1_CK]
Pin name
Table 5: STM8L15x pin
(3)
(9)
/
DD
I/O
S
is not implemented.
Doc ID 15962 Rev 5
description, some alternate functions can be remapped
X X
Input
(8)
X
HS
(9)
Output
X
X Port A0
IOs ground voltage
STM8L151xx, STM8L152xx
[USART1 synchronous
clock]
and output /
Beep output / Infrared
Timer output
DD
Default alternate
are not
(3)
function
/ SWIM input