General Description
The HT48RA0-1/HT48CA0-1 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The mask version HT48CA0-1 is fully pin and functionally compatible with the OTP version HT48RA0-1 device.
The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, watchdog timer, HALT and wake-up functions, as well as low cost, enhance the versatility of this device to suit a wide range of application possibilities such as industrial control, consumer products, and particularly suitable for use in products such as infrared remote controllers and various subsystem controllers.

FEATUREs
• Operating voltage: 2.0V~3.6V
• Ten bidirectional I/O lines
• Six Schmitt trigger input lines
• One carrier output (1/2 or 1/3 duty)
• On-chip crystal and RC oscillator
• Watchdog Timer
• 1K X 14 program memory
• 32 X 8 data RAM
• HALT function and wake-up feature reduce power consumption
• 62 powerful instructions
• Up to 1μs instruction cycle with 4MHz system clock
• All instructions in 1 or 2 machine cycles
• 14-bit table read instructions
• One-level subroutine nesting
• Bit manipulation instructions
• Low voltage reset function
• 24-pin SOP/SSOP packages