HT48R05A-1 Datasheet, PDF (1/44 Pages) Holtek Semiconductor Inc – 8-Bit OTP Microcontroller

Preliminary
HT48R05A-1
8-Bit OTP Microcontroller
Features
· Operating voltage:
f_SYS=4MHz: 3.3V~5.5V
f_SYS=8MHz: 4.5V~5.5V
· 13 bidirectional I/O lines
· An interrupt input shared with an I/O line
· 8-bit programmable timer/event counter with
overflow interrupt and 8-stage prescaler
· On-chip crystal and RC oscillator
· Watchdog timer
· 512´14 program memory PROM
· 32´8 data memory RAM
· Buzzer driving pair and PFD supported
· Halt function and wake-up feature reduce
power consumption
· Up to 0.5ms instruction cycle with 8MHz
system clock at V_DD=5V
· All instructions in one or two machine cy-
cles
· 14-bit table read instruction
· Two-level subroutine nesting
· Bit manipulation instruction
· 63 powerful instructions
· Low voltage reset function
General Description
The device is an 8-bit high performance
RISC-like microcontroller designed for multi-
ple I/O product applications. The device is par-
ticularly suitable for use in products such as
remote controllers, fan/light controllers, wash-
ing machine controllers, scales, toys and vari-
ous subsystem controllers. A halt feature is
included to reduce power consumption.
The program and option memories can be elec-
trically programmed, making the microcontrol-
ler suitable for use in product development.
1
February 25, 2000