The TC9329AFAG/AFCG is a single-chip DTS microcontroller for portable audio incorporating a 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 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:

CPU in operation: IDD = 40 µA typ.

PLL in operation: IDD = 6 mA typ. (VHF mode)

• Operating temperature range: Ta = −10~60°C

• Program memory (ROM): 16 bits × 4096 steps

• Data memory (RAM): 4 bits × 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 bits × 4-channels

• 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 bits (as timer clock: INTR1/INTR2; instruction cycle: 1 kHz selectable)

• Pulse counter: 8-bit up/down counter (input via INTR2 pin)

Buzzer: 8 settings, 0.625~3 kHz; 4 built-in modes consisting of continuous, single-shot, 10 Hz intermittent, or

10 Hz intermittent at 1 Hz intervals.

• Interrupts: 2 external, 2 internal (serial interface, 8-bit timer)

• Package: QFP-64 (0.5-mm/0.65-mm pitch, 1.4-mm thickness)