APU428 4-Bit Micro-controller With LCD Driver Features y Low power dissipation y Powerful instruction set (148 instructions) Ϋʳ Binary addition, subtraction, BCD adjustment, logical operation in direct addressing mode and index Ϋʳ addressing mode Ϋʳ Single-bit manipulation (set, reset, decision for branch) Ϋʳ Various conditional branches Ϋʳ 16 working registers and manipulation Ϋʳ LCD driver data transfer Ϋʳ Look-up table Ϋʳ Programmable option Ϋʳ System clock selection y Memory capacity Ϋʳ Instruction ROM capacity 2048 x 16 bits Ϋʳ Index ROM capacity 256 x 8 bits Ϋʳ Internal RAM capacity 256 x 4 bits (low-address 128 nibbles can be accessed by direct addressing, full-range 256 nibbles ca...

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