Overview
The LC72144M is an electronic tuning PLL frequency synthesizer for use in car and home products, and allows high-performance multifunction tuners to be implemented easily, since it includes an A/D converter, a high-speed lockup circuit, and a crystal oscillator circuit that support AM up-conversion.

Features
• High-speed programmable dividers for
    — 10 to 160 MHz on FMIN using pulse swallower
    — 0.5 to 40.0 MHz on AMIN using pulse swallower and direct division
• General-purpose counters
    — HCTR for 0.4 to 25.0 MHz frequency measurement
    — LCTR for 10 to 500 kHz frequency measurement and 4.0 Hz to 20 × 103 Hz period measurement
• 4.5, 7.2, 10.25 or 10.35 MHz crystal
• Twelve selectable reference frequencies (1, 3*2, 5, 9*2, 10, 3.125, 6.25, 12.5, 25, 30*2, 50 and 100*1 kHz)
        Note: 1. Not supported when a 10.35 or 10.25 MHz crystal oscillator is used.
            2. Not supported when a 10.25 MHz crystal oscillator is used.
• Phase comparator
    — Insensitive band control
    — Unlock detection
    — Sub-charge pump for high-speed locking
    — Deadlock clear circuit
• A/D converter: 6 bits, 2 inputs
• Serial data input and output Supports control and communication in the CCB format
• Power-on reset circuit
• On-chip crystal oscillator output buffer
• Inputs/outputs (using six general-purpose input/output ports)
• Operating ranges
    — Power-supply voltage: 4.5 to 5.5 V
    — Operating temperature: –40 to 85°C
• Package: MFP24S