STM8S903K3 STMicroelectronics, STM8S903K3 Datasheet - Page 2

• Manufacturer Part Number: STM8S903K3
• Description: 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM
• Manufacturer: STMicroelectronics

Specifications of STM8S903K3

• Program Memory: 8 Kbytes Flash; data retention 20 years at 55 °C after 10 kcycles
• Data Memory: 640 bytes true data EEPROM; endurance 300 kcycles
• Ram: 1 Kbytes
• Advanced Control Timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization

Contents
Contents
1 Introduction ..............................................................................................................8
2 Description ...............................................................................................................9
3 Block diagram ........................................................................................................10
4 Product overview ...................................................................................................11
5 Pinout and pin description ...................................................................................20
6 Memory and register map .....................................................................................28
7 Interrupt vector mapping ......................................................................................42
8 Option bytes ...........................................................................................................44
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4.1 Central processing unit STM8 .....................................................................................11
4.2 Single wire interface module (SWIM) and debug module (DM) ..................................11
4.3 Interrupt controller .......................................................................................................12
4.4 Flash program and data EEPROM memory ................................................................12
4.5 Clock controller ............................................................................................................13
4.6 Power management ....................................................................................................14
4.7 Watchdog timers ..........................................................................................................15
4.8 Auto wakeup counter ...................................................................................................15
4.9 Beeper ........................................................................................................................15
4.10 TIM1 - 16-bit advanced control timer .........................................................................16
4.11 TIM5 - 16-bit general purpose timer ..........................................................................16
4.12 TIM6 - 8-bit basic timer ..............................................................................................16
4.13 Analog-to-digital converter (ADC1) ............................................................................17
4.14 Communication interfaces .........................................................................................17
5.1 STM8S903F3 TSSOP20/SO20 pinout ........................................................................21
5.2 STM8S903F3 UFQFPN20 pinout ................................................................................22
5.3 TSSOP/SO/UFQFPN20 pin description ......................................................................23
5.4 STM8S903K3 UFQFPN32/LQFP32/SDIP32 pinout ....................................................24
5.5 UFQFPN/LQFP/SDIP32 pin description ......................................................................25
5.6 Alternate function remapping .......................................................................................27
6.1 Memory map ................................................................................................................28
6.2 Register map ...............................................................................................................29
8.1 STM8S903K3/F3 alternate function remapping bits ....................................................46
4.14.1 UART1 ...............................................................................................17
4.14.2 SPI .....................................................................................................18
4.14.3 I²C ......................................................................................................18
6.2.1 I/O port hardware register map ............................................................29
6.2.2 General hardware register map ...........................................................30
6.2.3 CPU/SWIM/debug module/interrupt controller registers .....................39
DocID15590 Rev 6
STM8S903K3 STM8S903F3