KS57C21632 microcontroller equivalent, single-chip cmos microcontroller.
Memory
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* 768 × 4-bit RAM (excluding LCD display RAM) 32,768 × 8-bit ROM Interrupts
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* 12 I/O Pins
* I/O: 12 pins Memory-Mapped I/O Structure .
Table 1-1. KS57C21632 Pin Descriptions Pin Name P0.0 P0.1 P0.2 P0.3 Pin Type I/O Description 4-bit I/O port. 1-bit and 4-bit read/write and test are possible. Individual pins are software configurable as input or output. Individual pins are software.
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