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The HT48RA5/HT48CA5 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 HT48CA5 is fully pin and functionally compatible with the OTP version HT48RA5 device.
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 these devices to suit a wide range of application possibilities such as industrial control, consumer products, subsystem controllers, and particularly suitable for use in products such as universal remote controller (URC).
HT48RA5 Maximum Ratings
Supply Voltage .........................VSS-0.3V to VSS+6.0V Input Voltage...........................VSS-0.3V to VDD+0.3V Storage Temperature ..........................-50 to 125 Operating Temperature........................ -40 to 85 Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those isted in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
HT48RA5 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 interrupt and 8-stage prescaler (TMR0) · 16-bit programmable timer/event counter and overflow interrupts (TMR1) · On-chip crystal and RC oscillator · Watchdog Timer · 40K×16 program memory (8K×16 bits×5 banks) · 224×8 data memory RAM · PFD supported · HALT function and wake-up feature reduce power consumption · 8-level subroutine nesting · Up to 1×s instruction cycle with 4MHz system clock at 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