HT48C30

· Operating voltage: 2.4V~5.2V
· Bidirectional I/O lines with a selection of 18,22, 32 and 56 lines
· One interrupt input
· Programmable timer/event counters with overflow interrupts and a selection of one 8-bit counter, one 8-bit and one 16-bit counters, or two 16-bit counters
· On-chip crystal and RC oscillator
· Watchdog timer
· Program ROM with size selection of 1K×14, 2K×14, 4K×15 and 8K×16 bits
· Data RAM with size selection of 64×8, 96×8,160×8 and 224×8 bits
· Halt function and wake-up feature to reduce power consumption
· 63 powerful instructions
· Up to 0.5ms instruction cycle with 8MHz system clock at V_DD=5V
· All instructions in 1 or 2 machine cycles
· 14-bit/15-bit/16-bit table read instructions
· 2-level/4-level/8-level subroutine nesting
· Bit manipulation instructions

Supply Voltage .......................V_DD0.3V to 5.5V
Storage Temperature............. 50°C to 125°C
Input Voltage .................V_SS0.3V to V_DD+0.3V
Operating Temperature .......... 25°C to 70°C
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 listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

The HT48C10/HT48C30/48C50/48C70 are 8-bit high performance RISC-like microcontrollers,specifically designed for multiple I/O product applications. These devices are suitable for use in products such as remote controllers, fan/light controllers, washing machine controllers, scales, toys, and various subsystem controllers.They all contain a halt feature to reduce power consumption. The major differences between these microcontrollers HT48C10/HT48C30/48C50/48C70 are attributed to variations in sizes of the ROM and RAM, as well as bit number, counter number, I/O line number,and different level subroutine nesting. Roughly speaking, the HT48C10 is a microcontroller with most economic features and the HT48C70 is one with the most features of the four microcontrollers.