HT49R50A-1/HT49C50-1/HT49C50L
LCD Type 8-Bit MCU
Technical Document
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Features
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Operating voltage:
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On-chip crystal, RC and 32768Hz crystal oscillator
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HALT function and wake-up feature reduce power
f
SYS
=4MHz: 2.2V~5.5V for HT49R50A-1/HT49C50-1
f
SYS
=8MHz: 3.3V~5.5V for HT49R50A-1/HT49C50-1
f
SYS
=500kHz: 1.2V~2.2V for HT49C50L
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8 input lines
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12 bidirectional I/O lines
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Two external interrupt input
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Two 8-bit programmable timer/event counter with
consumption
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6-level subroutine nesting
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Bit manipulation instruction
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15-bit table read instruction
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Up to 0.5ms instruction cycle with 8MHz system clock
PFD (programmable frequency divider) function
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LCD driver with 33´2, 33´3 or 32´4 segments
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4K´15 program memory
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160´8 data memory RAM
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Real Time Clock (RTC)
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8-bit prescaler for RTC
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Watchdog Timer
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Buzzer output
for HT49R50A-1/HT49C50-1
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Up to 8ms instruction cycle with 500kHz system clock
for HT49C50L
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63 powerful instructions
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All instructions in 1 or 2 machine cycles
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Low voltage reset/detector function
for HT49R50A-1/HT49C50-1
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48-pin SSOP, 100-pin QFP package
General 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 flexibil-
ity, 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 multi-
meters, gas meters, timers, calculators, remote
controllers and many other LCD-based industrial and
home appliance applications.
Rev. 2.10
1
April 24, 2006
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
