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LC72345W

Part Number	LC72345W
Manufacturer	Sanyo Semicon Device
Description	Low-Voltage ETR Controller
Published	Mar 22, 2005
Detailed Description	Ordering number : ENN6171 CMOS IC LC72344W, 72345W Low-Voltage ETR Controller with On-Chip DC-DC Converter Overview T...
Datasheet	LC72345W PDF File

Overview

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 0.
5 0.
18 1.
25 33 32 0.
15 12.
0 10.
0 0.
5 1.
25 64 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.
5 0.
1 0.
5 1.
7max 1.
25 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 expected...

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