Preliminary Features • • • • • • • • HTG1390 4-bit Microcontroller • • • • • • • • Operating voltage: 1.
2V~1.
8V 7 input lines 3 output lines Halt feature reduces power consumption Up to 16µs instruction cycle with 256kHz system clock at VDD=1.
5V All instructions in 1 or 2 machine cycles 4K×8 program ROM Data memory RAM size 128×4 bits 27×3 segment LCD driver 8-bit table read instruction 5 working registers Internal timer overflow interrupt One level subroutine nesting RC oscillator for system clock 8-bit timer with internal clock source Sound effect circuit General Description The HTG1390 is the processor from Holtek’s 4-bit stand alone single chip microcontroller range specifically desi...

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