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GENERAL DESCRIPTION

INTRODUCTION

The ST62T80B and ST62E80B devices are low cost members of the ST62xx 8-bit HCMOS family of microcontrollers, which is targeted at low to medium complexity applications. All ST62xx devices are based on a building block approach: a common core is surrounded by a number of on-chip peripherals.

The ST62E80B is the erasable EPROM version of the ST62T80B device, which may be used to emulate the ST62T80B device, as well as the respective ST6280B ROM devices.

■ 3.0 to 6.0V Supply Operating Range

■ 8 MHz Maximum Clock Frequency

■ -40 to +85°C Operating Temperature Range

■ Run, Wait and Stop Modes

■ 5 Interrupt Vectors

■ Look-up Table capability in Program Memory

■ Data Storage in Program Memory: User selectable size

■ Data RAM: 192 bytes

■ Data EEPROM: 128 bytes

■ User Programmable Options

■ 22 I/O pins, fully programmable as:

– Input with pull-up resistor

– Input without pull-up resistor

– Input with interrupt generation

– Open-drain or push-pull output

– Analog Input

■ 10 I/O lines can sink up to 20mA to drive LEDs or TRIACs directly

■ One 8-bit Timer/Counter with 7-bit programmable prescaler

■ One 8-bit Auto-Reload Timer with 7-bit programmable prescaler (ARTimer)

■ Digital Watchdog

■ 8-bit A/D Converter with 12 analog inputs

■ 8-bit Synchronous Peripheral Interface (SPI)

■ 8-bit Asynchronous Peripheral Interface (UART)

■ LCD driver with 48 segment outputs, 8 backplane outputs, 8 software selectable segment/backplane outputs and selectable multiplexing ratio.

■ 32kHz oscillator for stand-by LCD operation

■ On-chip Clock oscillator can be driven by Quartz Crystal or Ceramic resonator

■ One external Non-Maskable Interrupt

■ ST6280-EMU2 Emulation and Development System (connects to an MS-DOS PC via a parallel port).