LC7185

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LC7185 PLL Frequency Synthesizer

### This 27 MHz band, PLL frequency synthesizer LSI chip is designed specifically for CB transceivers. The specifications are suited for use in U.S.A.(FCC).
The LC7185-8750 incorporates PLL circuitry and a controller for CB applications on a single CMOS chip. The controller handles the PLL circuitry, frequency data ROM, channel preset/recall RAM, and LED display driver. It also supports channel scan, channel preset/recall, and emergency channel call.

Pin | Name | Description
--- | --- | ---
1 | SA | Display Segment a
2 | SB | Display Segment b
3 | SC | Display Segment c
4 | SD | Display Segment d
5 | SE | Display Segment e
6 | SF | Display Segment f
7 | SG | Display Segment g
8 | D1 |
9 | D2 |
10 | KI1 | Keyboard In 1
11 | KI2 | Keyboard In 2
12 | KI3 | Keyboard In 3
13 | KI4 | Keyboard In 4
14 | KO1 | Keyboard Out 1
15 | KO2 | Keyboard Out 2
16 | KO3 | Keyboard Out 3
17 | BEEP |
18 | UL |
19 | XOUT | X-tal Out
20 | XIN | X-tal In
21 | Vss2 |
22 | TEST |
23 | PIN |
24 | GND | Ground
25 | INIT |
26 | HOLD |
27 | PD |
28 | Vss1 |
29 | NC | No Connection
30 | TX |

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