HT49R50A-1

Description

The HT49R50A-1/HT49C50-1/HT49C50L are 8-bit, high performance, RISC architecture microcontroller devices specifically designed for a wide range of LCD applications. The mask version HT49C50-1 and HT49C50L are fully pin and functionally compatible with the OTP version HT49R50A-1 device. The HT49C50L is a low voltage version, with the ability to operate at a minimum power supply of 1.2V, making it suitable for single cell battery applications.

The advantages of low power consumption, I/O flexibility, programmable frequency divider, timer functions, oscillator options, HALT and wake-up functions and buzzer driver in addition to a flexible and configurable
LCD interface, enhance the versatility of these devices to control a wide range of LCD-based application possi-
bilities such as measuring scales, electronic multimeters，gas meters, timers, calculators，remote controllers and many other LCD-based industrial and home appliance applications.

Features

●Operating voltage:
fsys=4MHz: 2.2V~5.5V for HT49R50A-1/HT49C50-1
fsys=8MHz: 3.3V~5. .5V for HT49R50A-1/HT49C50-1
fsys=500kHz: 1.2V~2.2V for HT49C50L
●8 input lines
●12 bidirectional I/O lines
●Two external interrupt input
●Two 8-bit programmable timer/event counter with PFD (programmable frequency divider) function
●LCD driver with 33x2, 33x3 or 32x4 segments
●4Kx15 program memory
●160x8 data memory RAM
●Real Time Clock (RTC)
●8-bit prescaler for RTC
●Watchdog Timer
●Buzzer output
●On-chip crystal, RC and 32768Hz crystal oscillator
●HALT function and wake-up feature reduce power consumption
●6-level subroutine nesting
●Bit manipulation instruction
●15-bit table read instruction
●Up to 0.5μs instruction cycle with 8MHz system clock for HT49R50A-1/HT49C50-1
●Up to 8μs instruction cycle with 500kHz system clock for HT49C50L
●63 powerful instructions
●AllI instructions in 1 or 2 machine cycles
●Low voltage reset/detector function for HT49R50A- 1/HT49C50-1
●48-pin SSOP, 64-pin LQFP and 100-pin LQFP packages