STM8S903K3U3 STMicroelectronics, STM8S903K3U3 Datasheet - Page 2

• Manufacturer Part Number: STM8S903K3U3
• Description: IC MCU 8BIT 8KB FLASH 32UFQFPN
• Manufacturer: STMicroelectronics
• Series: STM8Sr

Specifications of STM8S903K3U3

• Featured Product: STM32 Cortex-M3 Companion Products
• Core Processor: STM8
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 28
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 640 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.95 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: *
• Core: STM8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Contents
Contents
1 Introduction ..............................................................................................................8
2 Description ...............................................................................................................9
3 Block diagram ........................................................................................................10
4 Product overview ...................................................................................................11
5 Pinout and pin description ...................................................................................19
6 Memory and register map .....................................................................................25
7 Interrupt vector mapping ......................................................................................39
8 Option bytes ...........................................................................................................41
9 Unique ID ................................................................................................................47
10 Electrical characteristics ....................................................................................48
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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 ..........................................................................................................14
4.8 Auto wakeup counter ...................................................................................................15
4.9 Beeper ........................................................................................................................15
4.10 TIM1 - 16-bit advanced control timer .........................................................................15
4.11 TIM5 - 16-bit general purpose timer ..........................................................................16
4.12 TIM6 - 8-bit basic timer ..............................................................................................16
4.13 Analog-to-digital converter (ADC1) ............................................................................16
4.14 Communication interfaces .........................................................................................17
5.1 STM8S903K3/F3 TSSOP20/SO20 pinout ...................................................................20
5.2 STM8S903K3/F3 UFQFPN32/LQFP32/SDIP32 pinout ..............................................21
5.3 Pin description .............................................................................................................22
5.4 Alternate function remapping .......................................................................................24
6.1 Memory map ................................................................................................................25
6.2 Register map ...............................................................................................................26
8.1 STM8S903K3/F3 alternate function remapping bits ....................................................43
4.14.1 UART1 ...............................................................................................17
4.14.2 SPI .....................................................................................................18
4.14.3 I²C ......................................................................................................18
6.2.1 I/O port hardware register map ............................................................26
6.2.2 General hardware register map ...........................................................27
6.2.3 CPU/SWIM/debug module/interrupt controller registers .....................36
DocID15590 Rev 5
STM8S903K3 STM8S903F3