Features
■ CMOS DTS microcontroller LSI with built-in 230 MHz prescaler, PLL, and LCD driver
■ Operating voltage: PLL operating: VDD = 3.0 to 3.6 V (typ. 3.3 V) PLL off: VDD = 3.0 to 3.6 V (when CPU only operating)
■ Crystal oscillator frequency: 4.5 MHz, 75 kHz
■ Current dissipation: PLL operating: IDD = 3.5 mA (typ.) (crystal oscillator frequency 4.5 MHz, VHF mode) PLL off: IDD = 1 mA (typ.) (crystal oscillator frequency 4.5 MHz, CPU only operating) PLL off: IDD = 0.25 mA (typ.) (crystal oscillator frequency 75 kHz, CPU only operating)
■ Operating temperature range: Ta = ï40 to 85°C
■ Program memory (ROM): 16 bits × 16,384 steps
■ Data memory (RAM): 4 bits × 1,024 words
■ Instruction execution time: 1.78 µs (crystal oscillator frequency 4.5 MHz) 40 µs (crystal oscillator frequency 75 kHz)
■ Stack levels: 16
■ General-purpose IF counter: 20-bit (CMOS input supported)
■ AD converter: 8 bits × 8 channels
■ LCD driver: 1/4, 1/3, 1/2 duty, 1/2, 1/3 bias modes selectable, 136 segments maximum
■ I/O ports: CMOS I/O ports: 40 Output-only ports: Up to 31, input-only ports: Up to 5
■ Timer-counter: 8-bit (as timer clock: INTR1, INTR2, instruction cycle, or 1 kHz selectable)
■ Pulse counter: 8-bit up/down counter (input from INTR2 pin)
■ Buzzer: 0.625 to 3 kHz (8 settings) Four modes: Continuous, Single-Shot, 10-Hz Intermittent, 10-Hz Intermittent at 1-Hz Intervals
■ Interrupts: 2 external, 4 internal (three types of serial interface, 8-bit timer)