Features

● I

2C Slave for host interface

● GPIO Functions

‒ Maximum 24 general purpose

input/output ports

‒ Selectable input or output port

‒ Selectable pull-up or pull-down /

connecting or non-connecting resistor

‒ Selectable drive current (3 types)

‒ Supporting pseudo open drain output

buffer

‒ Selectable interrupt detecting by level /

edge / both edges and active low / high

‒ Automatic escape from sleep mode by

signal input

● Key Board

‒ Key Matrix (Max 8 × 12 = 96 keys)

‒ Support special function keys and

dedicated keys

‒ Key de-bouncing function

● PWM / Timer

‒ 3 timer module for LED back light control

‒ LED switching control by PWM

sequencer

● Internal oscillator for system clock

● Sleep mode for reducing of power

consumption

● Operating voltage 1.62 V to 3.60 V

● 10mm × 10mm LQFP package (44 pins,

0.8mm pin pitch, maximum 1.7mm height)