LC72345W Datasheet | SANYO

Ordering number : ENN6171 CMOS IC LC72344W, 72345W Low-Voltage ETR Controller with On-Chip DC-DC Converter Overview The LC72344W and LC72345W are low-voltage electronic tuning microcontrollers that include a DC-DC converter, a PLL that operates up to 230 MHz, a 1/4 duty 1/2 bias LCD driver and other functions on chip. The built-in DC-DC converter provided by these ICs can easily implement a tuning system voltage generator circuit, and furthermore, since the transistor required for the low-pass filter is built in, these ICs can contribute to further end product cost reductions. Additionally, the DC-DC converter output voltage can be provided to other external ICs, making these products optimal for low-voltage portable audio equipment that includes a radio receiver. Package Dimensions unit: mm 3190-SQFP64 [LC72344W, 72345W] 12.0 10.0 1.25 48 49 33 32 12.0 10.0 0.5 17 1 16 Functions - Program memory (ROM): 3072 × 16 bits (6 KB) LC72344W 4096 × 16 bits (8 KB) LC72345W - Data memory (RAM): 192 × 4 bits LC72344W 256 × 4 bits LC72345W - Cycle time: 40 µs (all 1-word instructions) - Stack: 8 levels - LCD driver: 48 to 76 segments (1/4 duty, 1/2 bias drive) - Interrupts: One external interrupt Timer interrupts (1, 5, 10, and 50 ms) - A/D converter: Two input channels (5-bit successive approximation conversion) - Input ports: 6 ports (of which 2 can be switched for use as A/D converter inputs) - Output ports: 6 ports (of which 1 can be switched for use as the beep tone output and 2 are opendrain ports) - I/O ports: 16 ports (of which 8 can be switched for use as LCD ports as mask options) (Continued on next page.) 0.1 0.5 1.7max SANYO: SQFP64 Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably...