
HT49R30A-1/HT49C30-1/HT49C30L
8-Bit LCD Type MCU
Rev. 1.10
1
September 25, 2002
Features
Operating voltage:
2.2V~5.5V for HT49R30A-1/HT49C30-1
1.2V~2.2V for HT49C30L
6 input lines
8 bidirectional I/O lines
Two external interrupt input
One 8-bit programmable timer/event counter with
PFD (programmable frequency divider) function
LCD driver with 19 2, 19 3 or 18 4 segments
2K 14 program memory ROM
96 8 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
4-level subroutine nesting
Bit manipulation instruction
14-bit table read instruction
Up to 0.5 s instruction cycle with 8MHz system clock
for HT49R30A-1/HT49C30-1
Up to 8 s instruction cycle with 500kHz system clock
for HT49C30L
63 powerful instructions
All instructions in 1 or 2 machine cycles
Low voltage reset/detector for
HT49R30A-1/HT49C30-1
48-pin SSOP package
General Description
The HT49C30-1 and the HT49C30L are 8-bit high per-
formance single chip microcontrollers. The
HT49R30A-1 is the OTP version of the HT49C30-1. Its
single cycle instruction and two-stage pipeline architec-
ture make it suitable for high speed applications. The
devices are also suitable for use in multiple LCD low
power applications such as scales, leisure products,
high-level household appliances, hand held LCD prod-
ucts and batteries operated systems in particular.