HT48R10A Datasheet, PDF (1/42 Pages) Holtek Semiconductor Inc – 8-Bit Microcontroller

HT48R10A-1
8-Bit Microcontroller
Features
· Operating voltage:
f_SYS=4MHz: 3.3V~5.5V
f_SYS=8MHz: 4.5V~5.5V
· 21 bidirectional I/O lines (max.)
· 1 interrupt input shared with an I/O line
· 8-bit programmable timer/event counter with
overflow interrupt and 8-stage prescaler
· On-chip external crystal, RC oscillator and
internal RC oscillator
· 32768Hz crystal oscillator for timing
purposes only
· Watchdog Timer
· 1024´14 program memory ROM
· 64´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
cycles
· 14-bit table read instruction
· 4-level subroutine nesting
· Bit manipulation instruction
· 63 powerful instructions
· Low voltage reset function
· 24-pin SKDIP/SOP package
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.
Rev. 1.20
1
July 2, 2001