HOLTEK
HT48R05A-1
8-Bit Cost-Effective I/O Type OTP MCU
 Features
Operating voltage: Buzzer driving pair and PFD supported
---fSYS=4MHz: 3.3V~5.5V HALT function and wake-up feature reduce
---fSYS=8MHz: 4.5V~5.5V ---power consumption
13 bidirectional I/O lines Up to 0.5us instruction cycle with 8MHz
An interrupt input shared with an I/O line ---system clock at VDD=5V
8-bit programmable timer/event counter All instructions in one or two machine cycles
---with overflow interrupt and 8-stage 14-bit table read instruction
---prescaler Two-level subroutine nesting
On-chip crystal and RC oscillator Bit manipulation instruction
Watchdog Timer 63 powerful instructions
512x14 program memory EPROM Low voltage reset function

32x8 data memory RAM

 16-pin SSOP package
18-pin DIP/SOP package  
 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. The program
and option memories can be electrically programmed, making the microcontroller suitable for
use in product development.