HT48CXX/HT48RXX 8-Bit Microcontroller Series Features Operating voltage: 2.4V~5.2V Data RAM with size selection of 648, 968, Bidirectional I/O lines with a selection of 18, 1608 and 2248 bits 22, 32 and 56 lines Halt function and wake-up feature to reduce One interrupt input power consumption Programmable timer/event counters with 63 powerful instructions overflow interrupts and a selection of one Up to 0.5s instruction cycle with 8MHz 8-bit counter, one 8-bit and one 16-bit count- system clock at V =5V DD ers, or two 16-bit counters All instructions in 1 or 2 machine cycles On-chip crystal and RC oscillator 14-bit/15-bit/16-bit table read instructions Watchdog timer 2-level/4-level/8-level subroutine nesting Program ROM with size selection of Bit manipulation instructions 1K14, 2K14, 4K15 and 8K16 bits General Description The HT48C10/48C30/48C50/48C70 are 8-bit these microcontrollers are attributed to vari- high performance RISC-like microcontrollers, ations in sizes of the ROM and RAM, as well as specifically designed for multiple I/O product bit number, counter number, I/O line number, applications. These devices are suitable for use and different level subroutine nesting. Roughly in products such as remote controllers, fan/light speaking, the HT48C10 is a microcontroller controllers, washing machine controllers, with most economic features and the HT48C70 scales, toys, and various subsystem controllers. is one with the most features of the four micro- They all contain a halt feature to reduce power controllers. consumption. The major differences between 1 25th May 99HT48CXX/HT48RXX Selection Table Mask version Part No. HT48C10 HT48C30 HT48C50 HT48C70 Operating Voltage 2.4V~5.2V 2.4V~5.2V 2.4V~5.2V 2.4V~5.2V External Interrupt 1 1 1 1 Internal Interrupt 1 1 2 2 8-bit Timer/Event Counter 1 1 1 0 16-bit Timer/Event Counter 0 0 1 2 System Oscillator Crystal/RC Crystal/RC Crystal/RC Crystal/RC Watchdog Timer 1 1 1 1 ROM 1K14 2K14 4K15 8K16 648 968 1608 2248 RAM (40H~7FH) (20H~7FH) (60H~FFH) (20H~FFH) I/O Lines 18 22 32 56 Instructions 63 63 63 63 Stack Levels 2 2 4 8 Operating Frequency 400kHz~8MHz 400kHz~8MHz 400kHz~8MHz 400kHz~8MHz Power Down Mode Table Read Instructions OTP version Part No. V f I/O Pull-high Mask version DD SYS HT48R11 3.0V~5.2V 400k~4MHz No HT48C10 HT48R12 3.0V~5.2V 400k~4MHz Yes HT48C10 HT48R31 3.0V~5.2V 400k~4MHz No HT48C30 HT48R32 3.0V~5.2V 400k~4MHz Yes HT48C30 HT48R50 3.0V~5.2V 400k~4MHz Yes HT48C50 HT48R51* 3.0V~5.2V 400k~4MHz No HT48C50 * Under development 2 25th May 99