Datasheet

Description2
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
STM8S903F3STM8S903K3Device
2032Pin count
16
(2)
28
(1)
Max. number of GPIOs
(I/Os)
1628Ext. interrupt pins
7Timer CAPCOM
channels
23Timer complementary
outputs
57A/D converter channels
1221High sink I/Os
8KLow density Flash
program memory(bytes)
640
(3)
Data EEPROM (bytes)
1KRAM (bytes)
Multipurpose timer (TIM1), SPI, I
2
C, UART window WDG,
independent WDG, ADC, PWM timer (TIM5), 8-bit timer (TIM6)
Peripheral set
(1)
Including 21 high sink outputs
(2)
Including 12 high sink outputs
(3)
No read-while-write (RWW) capability
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DescriptionSTM8S903K3 STM8S903F3