STM8S903K3 datasheet(29/121 Pages) STMICROELECTRONICS

Part #	STM8S903K3

Description	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, IC

PDF	121 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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STM8S903K3 STM8S903F3

Pinouts and pin descriptions

431

PD6/ AIN6/

UART1_RX

I/O

HS O3

X Port D6

Analog input 6/

UART1 data

receive

532

PD7/ TLI

[TIM1_CH4]

I/O

HS O3

X Port D7

Top level

interrupt

Timer 1 -

channel 4

[AFR6]

1. I/O pins used simultaneously for high current source/sink must be uniformly spaced around the package. In addition, the

total driven current must respect the absolute maximum ratings (see Section 10: Electrical characteristics).

2. When the MCU is in Halt/Active-halt mode, PA1 is automatically configured in input weak pull-up and cannot be used for

waking up the device. In this mode, the output state of PA1 is not driven. It is recommended to use PA1 only in input mode

if Halt/Active-halt is used in the application.

3. In the open-drain output column, “T” defines a true open-drain I/O (P-buffer, weak pull-up, and protection diode to VDD are

not implemented).

4. The PD1 pin is in input pull-up during the reset phase and after internal reset release.

Table 6. STM8S903K3 UFQFPN32/LQFP32/SDIP32 pin descriptions (continued)

Pin name

Input

Output

STM8S903K3 Datasheet(PDF) 29 Page - STMicroelectronics