LC723462W Datasheet | SANYO

.Data Sheet.co.kr Ordering number : ENN- 7275 CMOS IC LC723461W, 723462W Ultralow-Voltage ETR Controller with On-Chip LCD Driver Preliminary Overview The LC723461W and LC723462W are ultralow-voltage electronic tuning microcontrollers that include a PLL that operates up to 250 MHz and a 1/4 duty 1/2 bias LCD driver on chip. This IC includes an on-chip DC-DC converter that can easily create the power supply voltages needed for electronic tuning and contribute to reducing end product costs. This IC is optimal for portable audio equipment that must operate from a single battery. - - - switched for use as serial I/O ports) Can be switched for CMOS output/open-drain outputs. Serial I/O: One system (LC723462) PLL: Reference frequencies: 1, 3, 3.125, 5, 6.25, 12.5, and 25 k Hz Input frequencies: FM band: 10 to 250 MHz AM band (high): 2 to 20 MHz AM band (low): 0.5 to 10 MHz Input sensitivity: FM band: 35 m Vrms (10 m Vrms at 130 MHz), 50 m Vrms (130 to 250 MHz) AM band (high, low): 35 m Vrms IF count: HCTR input pin: 0.4 to 12 MHz (HCTR can be switched to function as a general-purpose input port.) Continued on next page. - Function - Program memory (ROM): - 4096 × 16 bits (8K bytes) : LC723461 - 6144 × 16 bits (12K bytes): LC723462 - Data memory (RAM): - 256 × 4 bits: LC723461 - 512 × 4 bits: LC723462 - Cycle time: 40 µs (all 1-word instructions) at 75k Hz crystal oscillation - Stack: 8 levels - LCD driver: 48 to 80 segments (1/4 duty, 1/2 bias drive) - Interrupts: Two external interrupts Timer interrupts (1, 5, 10, and 50 ms) - A/D converter: Four input channels (8-bit chopper A/D converter. The reference voltage can be switched using the ADCHG instruction.) - Input ports: 8 ports (of which three can be switched for use as A/D converter input and one can be switched for use as IF counter input.) - Output ports: 6 ports (of which 1 can be switched for use as the beep tone output and 2 are open-drain ports) - I/O ports: 19 ports (of which 8 can be switched for use as LCD...