HT48R12 Datasheet, PDF (1/59 Pages) Holtek Semiconductor Inc – 8-Bit Microcontroller Series

HT48CXX/HT48RXX
8-Bit Microcontroller Series
Features
• _{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 count-
ers, 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
General Description
The HT48C10/48C30/48C50/48C70 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
• _{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 0.5µs instruction cycle with 8MHz}
system clock at VDD=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}
these microcontrollers are attributed to vari-
ations 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 micro-
controllers.
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25th May ’99