NT6611 1K 4-bit Microcontroller with LCD Driver Features ! NT6610C-based single-chip 4-bit microcontroller w ith LCD driver ! ROM: 1024 × 16 bits ! RAM: 256 × 4 bits (data memory) ! Operation Voltage Range: 2.
2V - 5.
4V (3V typically) ! 16 CMOS I/O pins (PORTA - D, CMOS or Open Drain by code option ) ! 4 level subroutine nesting (including interrupts) ! Two 8-bit timers with pre-divider circuit ! Oscillator warm-up timer ! 4 priority interrupt sources: - External interrupt (falling edge) - Timer0 interrupt - Timer1 interrupt - PortB interrupt (falling edge) ! Clock source: 32.
768KHz crystal or 262K RC (type is programmable by code option) ! Instruction cycle time: 4/32.
768KHz (≈ 122µs) for 32...

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