PM0044 datasheet(10/162 Pages) STMICROELECTRONICS

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STM8 architecture

PM0044

10/162

Doc ID 13590 Rev 3

Additional blocks

The additional blocks take the form of integrated hardware peripherals arranged around the

central processor core. The following (non-exhaustive) list details the features of some of the

currently available blocks:

1.1

STM8 development support

The STM8 family of MCUs is supported by a comprehensive range of development tools.

This family presently comprises hardware tools (emulators, programmers), a software

package (assembler-linker, debugger, archiver) and a C-compiler development tool.

STM8 and ST7 CPUs are supported by a single toolchain allowing easy reuse and

portability of the applications between product lines.

Boot ROM

Memory area containing the bootloader code

Flash

Flash-based devices

RAM

Sizes up to several Kbytes

Data EEPROM

Sizes up to several Kbytes. Erase/programming operations do not require

additional external power sources.

Timers

Different versions based on 8/16-bit free running or autoreload timer/counter are

available. They can be coupled with either input captures, output compares or

PWM facilities. PWM functions can have software programmable duty cycle

between 0% to 100% in up to 256/65536 steps. The outputs can be filtered to

provide D/A conversion.

A/D converter

The Analog to Digital Converter uses a sample and hold technique. It has 12-bit

resolution.

I2C

Multi/master, single master, single slave modes, DMA or 1byte transfer, standard

and fast I2C modes, 7 and 10-bit addressing.

SPI

The Serial peripheral Interface is a fully synchronous 3/4 wire interface ideal for

Master and Slave applications such as driving devices with input shift register

(LCD driver, external memory,...).

USART

The USART is a fast synchronous/asynchronous interface which features both

duplex transmission, NRZ format, programmable baud rates and standard error

detection. The USART can also emulate RS232 protocol.

Watchdog

It has the ability to induce a full reset of the MCU if its counter counts down to

zero prior to being reset by the software. This feature is especially useful in noisy

applications.

I/O ports

They are programmable by software to act in several input or output

configurations on an individual line basis, including high current and interrupt

generation. The basic block has eight bit lines.

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