Description 原装现货！ 封装LQFP64 The STM8S20xxx performance line 8-bit microcontrollers offer from 32 to 128 Kbytes Flash program memory. They are referred to as high-density devices in the STM8S microcontroller family reference manual. All devices of the STM8S20xxx performance line provide the following benefits: reduced system cost, performance robustness, short development cycles, and product longevity. The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k write/erase cycles and a high system integration level with internal clock oscillators, watchdog, and brown-out reset. Device performance is ensured by 20 MIPS at 24 MHz CPU clock frequency and enhanced characteristics which include robust I/O, independent watchdogs (with a separate clock source), and a clock security system. Short development cycles are guaranteed due to application scalability across a common family product architecture with compatible pinout, memory map and and modular peripherals. Full documentation is offered with a wide choice of development tools. Central processing unit STM8 The 8-bit STM8 core is designed for code efficiency and performance. It contains 6 internal registers which are directly addressable in each execution context, 20 addressing modes including indexed indirect and relative addressing and 80 instructions. Architecture and registers ● Harvard architecture ● 3-stage pipeline ● 32-bit wide program memory bus - single cycle fetching for most instructions ● X and Y 16-bit index registers - enabling indexed addressing modes with or without offset and read-modify-write type data manipulations ● 8-bit accumulator ● 24-bit program counter - 16-Mbyte linear memory space ● 16-bit stack pointer - access to a 64 K-level stack ● 8-bit condition code register - 7 condition flags for the result of the last instruction Addressing ● 20 addressing modes ● Indexed indirect addressing mode for look-up tables located anywhere in the address space ● Stack pointer relative addressing mode for local variables and parameter passing Instruction set ● 80 instructions with 2-byte average instruction size ● Standard data movement and logic/arithmetic functions ● 8-bit by 8-bit multiplication