器件名称: LC72316W
功能描述: Ultralow-Voltage ETR Controller with On-Chip LCD Driver
文件大小: 129.92KB 共12页
简 介:Ordering number : ENN*6650
CMOS IC
LC72314W, 72315W, 72316W
Ultralow-Voltage ETR Controller with On-Chip LCD Driver
Preliminary Overview
The LC72314W, LC72315W and LC72316W are ultralow-voltage (0.9 to 1.8 V) 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. Serial I/O: One system (LC72315W/72316W) PLL: Reference frequencies: 1, 3, 3.125, 5, 6.25, 12.5, and 25 kHz 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 mVrms (130 MHz to 250 MHz: 50 mVrms) AM band (high, low): 35 mVrms IF counter: HCTR input pin 0.4 to 15 MHz (35 mVrms) External reset input: During CPU and PLL operations, instruction execution is started from location 0.
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Function
Program memory (ROM): — 4096 × 16 bits (8K bytes) : LC72314W — 6144 × 16 bits (12K bytes): LC72315W — 8192 × 16 bits (16K bytes): LC72316W Data memory (RAM): — 256 × 4 bits: LC72314W — 512 × 4 bits: LC72315W/72316W Cycle time: 40 s (all 1-word instructions) Stack: 8 levels LCD driver: 48 to 112 segments (1/4 duty, 1/2 bias drive) Interrupts: Two external interrupts Timer interrupts (1, 5, 10, and ……
