The TC9329FA/FB is a single-chip DTS microcontroller for portable audio incorporating 230 MHz prescaler, PLL, and LCD driver. In addition to a 20 bit IF counter, 6 bit A/D converter, serial interface, and buzzer function, the device supports an interrupt function, 8 bit timer/counter, and 8 bit pulse counter. The LCD driver features built-in 1/4 duty, 1/2 bias and a 3 V voltage doubler boosting circuit, implementing stable LCD. The power supply voltage ranges from 0.9 to 1.8 V. Because of its low-current consumption (CPU: 80 µA (max)), the device is suitable for use in digital tuning systems in portable equipment such as headphone stereos.

FEATUREs
• CMOS DTS microcontroller LSI with built-in 230 MHz prescaler, PLL, and LCD driver
• Operating voltage: VDD = 0.9~1.8 V (typ.: 1.5 V)
• Current dissipation:
When CPU in operation: IDD = 40 µA typ.
When PLL in operation: IDD = 6 mA typ. (VHF mode)
• Operating temperature range: Ta = −10~60°C
• Program memory (ROM): 16 bit × 4096 steps
• Data memory (RAM): 4 bit × 256 words
• Instruction execution time: With crystal oscillator: 40 µs With CR oscillator: 6 µs
(at 1 MHz, VDD = 1.1~1.8 V)
• Crystal oscillator frequency: 75 kHz
• Stack level: 8
• General-purpose IF counter: 20 bit (CMOS input supported)
• A/D converter: 6 bit × 4-channel
• LCD driver: 1/4 duty, 1/2 bias, 72 segments (max)
• I/O port: CMOS I/O ports: 12 N-channel open drain I/O ports: 16 (max) Output-only port: 1
Input-only ports: 3 (max)
• Timer/counter: 8 bit (as timer clock: INTR1/INTR2, instruction cycle: 1 kHz selectable)
• Pulse counter: 8 bit up/down counter (input via INTR2 pin)
• Buzzer: Built-in four mode: 0.625~3 kHz (8 types), Continuous, Single-Shot,
10 Hz Intermittent, or 10 Hz Intermittent 1 Hz Interval
• Interrupts: 2 external, 2 internal (serial interface, 8 bit timer)
• Package: QFP-64 (0.5 mm/0.65 mm pitch, 1.4 mm thick)