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JA54130
4-Bit Micro-Controller With EEPROM, 1K Word
Features
Very low current dissipation. Wide operating voltage range. Supports both Ag and Li batteries. Powerful instruction set. 4-level subroutine nesting (including interrupt). y 4 event-driven interrupts, 2 external and 2 internal. y ROM size: 1024x15 bits. y RAM size: 64x4 bits. y Input ports: 2 ports/ 8 pins (S and M). y Output port: 1 port/ 4 pins (P). y Pseudo serial output port (P). y Input/Output ports: 2 ports/ 8 pins (I/OA and I/OB). y y y y y y Control outputs: ALARM, LIGHT. y LCD driver outputs (can drive up to 75 LCD segments). y PROM option to select 4 LCD drive modes: static, duplex (1/2 duty 1/2 bias, 1/3 duty 1/2 bias or 1/3 duty 1/3 bias).