INTRODUCTION
The ST72589W and ST72389W Microcontroller Units are members of the ST7 family of Microcontrollers dedicated to high-end applications with LCD driver capability.

■ 16K ROM or 24 Kbytes EPROM/OTP/FASTROM
■ Master Reset and Power-on Reset
■ Low consumption resonator main oscillator
■ Auxiliary 32-kHz resonator oscillator
■ 4 Power saving modes
■ Nested interrupt controller
■ NMI dedicated non maskable interrupt pin
■ 31 multifunctional bidirectional I/O lines with:
    – external interrupt capability (5 vectors)
    – 21 alternate function lines
■ LCD driver with 60 segment outputs and 8 backplane outputs able to drive up to 60x8 (480) or 60x4 (240) LCD displays
■ Real time base, Beep and Clock-out capabilities
■ Software watchdog reset
■ Two 16-bit timers with:
    – 2 input captures
    – 2 output compares
    – external clock input on one timer
    – PWM and Pulse generator modes
■ 10-bit PWM (DAC) with 4 dedicated output pins
■ SPI synchronous serial interface
■ SCI asynchronous serial interface
■ I2C multi master / slave interface
■ CAN interface
■ 8-bit ADC with 5 dedicated input pins
■ 8-bit Data Manipulation
■ 63 Basic Instructions
■ 17 main Addressing Modes
■ 8 x 8 Unsigned Multiply Instruction
■ True Bit Manipulation
■ Full hardware/software development package