Datasheet

Memory and register map
STM8S105xx
Table 7: Flash, Data EEPROM and RAM boundary addresses
Memory area Size (bytes) Start address End address
Flash program memory 32K 0x00 8000 0x00 FFFF
16K 0x00 8000 0x00 BFFF
RAM 2K 0x00 0000 0x00 07FF
Data EEPROM 1024 0x00 4000 0x00 43FF
6.2 Register map
6.2.1 I/O port hardware register map
Table 8: I/O port hardware register map
Address Block Register label Register name Reset status
0x00 5000 Port A PA_ODR Port A data output latch register 0x00
0x00 5001 PA_IDR Port A input pin value register 0xXX
0x00 5002 PA_DDR Port A data direction register 0x00
0x00 5003 PA_CR1 Port A control register 1 0x00
0x00 5004 PA_CR2 Port A control register 2 0x00
0x00 5005 Port B PB_ODR Port B data output latch register 0x00
0x00 5006 PB_IDR Port B input pin value register 0xXX
0x00 5007 PB_DDR Port B data direction register 0x00
0x00 5008 PB_CR1 Port B control register 1 0x00
0x00 5009 PB_CR2 Port B control register 2 0x00
0x00 500A Port C PC_ODR Port C data output latch register 0x00
0x00 500B PC_IDR Port C input pin value register 0xXX
0x00 500C PC_DDR Port C data direction register 0x00
0x00 500D PC_CR1 Port C control register 1 0x00
0x00 500E PC_CR2 Port C control register 2 0x00
0x00 500F Port D PD_ODR Port D data output latch register 0x00
0x00 5010 PD_IDR Port D input pin value register 0xXX
0x00 5011 PD_DDR Port D data direction register 0x00
0x00 5012 PD_CR1 Port D control register 1 0x02
0x00 5013 PD_CR2 Port D control register 2 0x00
0x00 5014 Port E PE_ODR Port E data output latch register 0x00
0x00 5015 PE_IDR Port E input pin value register 0xXX
0x00 5016 PE_DDR Port E data direction register 0x00
0x00 5017 PE_CR1 Port E control register 1 0x00
0x00 5018 PE_CR2 Port E control register 2 0x00
0x00 5019 Port F PF_ODR Port F data output latch register 0x00
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