Contents
STM8S105xx
Contents
1 Introduction ..............................................................................................................8
2 Description ...............................................................................................................9
3 Block diagram ........................................................................................................11
4 Product overview ...................................................................................................12
4.1 Central processing unit STM8 .....................................................................................12
4.2 Single wire interface module (SWIM) and debug module (DM) ..................................12
4.3 Interrupt controller .......................................................................................................13
4.4 Flash program and data EEPROM memory ................................................................13
4.5 Clock controller ............................................................................................................14
4.6 Power management ....................................................................................................15
4.7 Watchdog timers ..........................................................................................................16
4.8 Auto wakeup counter ...................................................................................................16
4.9 Beeper ........................................................................................................................16
4.10 TIM1 - 16-bit advanced control timer .........................................................................17
4.11 TIM2, TIM3 - 16-bit general purpose timers ..............................................................17
4.12 TIM4 - 8-bit basic timer ..............................................................................................17
4.13 Analog-to-digital converter (ADC1) ............................................................................18
4.14 Communication interfaces .........................................................................................18
4.14.1 UART2 ...............................................................................................18
4.14.2 SPI .....................................................................................................19
4.14.3 I²C ......................................................................................................19
5 Pinout and pin description ...................................................................................21
5.1 STM8S105 pinouts and pin description .......................................................................22
5.1.1 Alternate function remapping ...............................................................28
6 Memory and register map .....................................................................................29
6.1 Memory map ................................................................................................................29
6.2 Register map ...............................................................................................................30
6.2.1 I/O port hardware register map ............................................................30
6.2.2 General hardware register map ...........................................................33
6.2.3 CPU/SWIM/debug module/interrupt controller registers ......................47
7 Interrupt vector mapping ......................................................................................50
8 Option bytes ...........................................................................................................52
9 Unique ID ................................................................................................................57
10 Electrical characteristics ....................................................................................58
10.1 Parameter conditions .................................................................................................58
10.1.1 Minimum and maximum values .........................................................58
10.1.2 Typical values .....................................................................................58
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DocID14771 Rev 9
STMICROELECTRONICS [ ST ]
