Holtek Semiconductor HT48RA1
The HT48RA1/HT48CA1 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The data ROM can be used to store remote control codes. The mask version HT48CA1 is fully pin and functionally compatible with the OTP version HT48RA1 device.FEATURES
● Operating voltage: 2.0V~5.5V● 23 bidirectional I/O lines (max.)
● 1 interrupt input shared with an I/O line
● 8-bit programmable timer/event counter with overflow
● HALT function and wake-up feature reduce power consumption
● 8-level subroutine nesting
● Up to 1ms instruction cycle with 4MHz system clock at interrupt and 8-stage prescaler (TMR0)
● 16-bit programmable timer/event counter and VDD=3V
● Bit manipulation instruction
● 16-bit table read instruction
● 63 powerful instructions
● All instructions in one or two machine cycles
● Low voltage reset function
● 28-pin SOP/SSOP(209mil) package overflow interrupts (TMR1)
● On-chip crystal and RC oscillator
● Watchdog Timer
● 8K´16 program memory
● 224´8 data memory RAM
● PFD supported
GENERAL DESCRIPTION
The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, watchdog timer, programmable frequency divider, HALT and wake-up functions, as well as low cost, enhance the versatility of thes...