HOLTEK
HT48C30-1
8-Bit I/O Type Mask MCU
 Features
Operating voltage: 2048x14 program memory ROM
---fSYS=4MHz: 2.2V~5.5V 96x8 data memory RAM
---fSYS=8MHz: 4.5V~5.5V Buzzer driving pair and PFD supported
Low voltage reset function HALT function and wake-up feature reduce
25 bidirectional I/O lines (max.) ---power consumption
1 interrupt input shared with an I/O line 4-level subroutine nesting
8-bit programmable timer/event counter Up to 0.5us instruction cycle with 8MHz system
---with overflow interrupt and 8-stage ---clock at VDD=5V
---prescaler Bit manipulation instruction
On-chip RC oscillator, external crystal 14-bit table read instruction
---and RC oscillator 63 powerful instructions
32768Hz crystal oscillator for timing All instructions in one or two machine cycles
---purposes only 24/28-pin SKDIP/SOP-A package
Watchdog Timer  
 General Description
The device is an 8-bit high performance RISC-like microcontroller designed for multiple I/O
product applications. The device is particularly suitable for use in products such as remote
controllers, fan/light controllers, washing machine controllers, scales, toys and various
subsystem controllers. A HALT feature is included to reduce power consumption.