DESCRIPTION

The WT5041 is a high-performance, low-cost, CMOS 8-bit single-chip micro controller with on-chip OP Amp (OPA) for heart rate detect and 128 segments LCD driver. This chip can be used dedicate for applications where heart rate and LCD display are required, for example sports bicycle meter, heart rate meter and heart rate watch.

FEATURES

◆ 8-bit single chip micro controller with 8Kbytes ROM and 256 Bytes SRAM

◆ Wide voltage operating range from 2.4 V to 5.5 V

◆ Built-in 32.768KHz OSC circuits.

◆ 14 interrupt sources, 14 halt mode release sources (warm start), 8 off mode wake up sources (cold start); all sources have independent latches each and multi-control is available.

◆ I/O port (32 pins)

◆ I/O port0 8 pins (shared with SEG25~SEG32)

◆ I/O port1 1 pin (shared with OP Amp 1 pins)

◆ I/O port1 3 pins (shared with PWM0~2 output)

◆ I/O port1 4 pins (shared with RFC 4 pins)

◆ I/O port2 8 pins (shared with key detect & event counter inputs)

◆ I/O port3 6 pins (shared with OP Amp 6 pins)

◆ I/O port3 2 pins (shared with BUZ/BUZB output)

◆ Providing standby mode

◆ Key wake up function

◆ Build-in heart rate detect circuits and one 16-bit counter

◆ Build-in RFC circuit and one 16-bit counter for thermistor and humidity sensor use

◆ Dual 8-bit timer & one 16-bit timer/counters

◆ 3 Channel 8-bit PWM output

◆ LCD driver

◆ LCD direct drive (max. 16-digit display at 1/4 duty)

◆ 1/4, 1/3, 1/2 duties and 1/2, 1/3 biases can be selected by software programming

◆ 1/4, 1/3, 1/2 duties and 1/2, 1/3 biases can be selected by software programming

◆ LCD segments SEG25~32 can be used as 8 I/O pins by software programming

◆ Real-time emulator

◆ Package: Die form