AN2747 datasheet(21/44 Pages) STMICROELECTRONICS

Part #	AN2747

Description	250 W HID metal halide electronic ballast

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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21 / 44 page

AN2747

ST7LITE39 microcontroller

21/44

ST7LITE39 microcontroller

The ST7LITE3 is a member of the ST7 microcontroller family of products. All ST7s are

based on a common 8-bit core, able to run up to 8 MHz clock frequency. Enhanced

instructions like an 8x8-bit unsigned multiplication and indirect addressing allow good

efficiency and a compact application code.

Figure 17.

ST7FLIT3xB general block diagram

The MCU main characteristics are:

●

internal RC oscillator with 1% precision at 8 MHz CPU frequency

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seven input channels 10-bit resolution A/D converter with 3.5 s of conversion time

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two 8-bit lite timers with prescaler

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two12-bit auto-reload timers with 4 independent PWM outputs and programmable dead

time generation

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8 Kbytes flash program memory

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384 bytes RAM

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256 bytes data EEPROM

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SPI and SCI communication interfaces

Figure 18 shows the ST7FLITE39 pinout.

AN2747 Datasheet(PDF) 21 Page - STMicroelectronics