STM8S903K3 STM8S903F3
Description
2
Description
The STM8S903K3 and STM8S903F3 8-bit microcontrollers offer 8 Kbytes Flash program
memory, plus integrated true data EEPROM. The STM8S microcontroller family reference
manual (RM0016) refers to devices in this family as low-density. They provide the following
benefits: performance, robustness, and reduced system cost.
Device performance and robustness are ensured by advanced core and peripherals made
in a state-of-the art technology, a 16 MHz clock frequency, robust I/Os, independent watchdogs
with separate clock source, and a clock security system.
The system cost is reduced thanks to an integrated true data EEPROM for up to 300
kwrite/erase cycles and a high system integration level with internal clock oscillators, watchdog
and brown-out reset.
Full documentation is offered as well as a wide choice of development tools.
Table 1: STM8S903K3/F3 access line features
Device
STM8S903K3
STM8S903F3
Pin count
32
20
Max. number of GPIOs
(I/Os)
28(1)
16(2)
Ext. interrupt pins
28
16
Timer CAPCOM
channels
7
Timer complementary
outputs
3
2
A/D converter channels
High sink I/Os
7
5
21
12
Low density Flash
8K
program memory(bytes)
Data EEPROM (bytes)
RAM (bytes)
640(3)
1K
Peripheral set
Multipurpose timer (TIM1), SPI, I2C, UART window WDG,
independent WDG, ADC, PWM timer (TIM5), 8-bit timer (TIM6)
(1) Including 21 high sink outputs
(2) Including 12 high sink outputs
(3) No read-while-write (RWW) capability
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STMICROELECTRONICS [ ST ]
