LC72135M Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LC72135M

PLL Frequency Synthesizer for Electronic Tuning

SANYO -> Panasonic 

Continued from preceding page.

Symbol

Pin No.

Type

HCTR

11

IF counter

IF counter

LCTR/I1

10

Input port

LC72135M

Functions

• HCTR is selected when the LCTS bit in the serial data is

set to 0.

• Accepts an input in the frequency range 0.4 to 12 MHz.

• The input signal is directly transmitted to the IF counter.

• The result is output starting the MSB of the IF counter

using the DO pin.

• Four measurement periods are supported: 4, 8, 32, and

64 ms.

• LCTR is selected when the LCTS bit in the serial data is

set to 1. (Set the L/I1 bit in the serial data to 1 when

using the IF counter.)

• The input frequency range is 100 to 500 kHz.

• The signal is directly transmitted to the IF counter.

• The result, starting with the MSB of the IF counter, is

output serially through the DO pin.

• There are four measurement times: 4, 8, 32, and 64 ms.

• If the L/I1 bit in the serial data is set to 0, the LCTR/I1 pin

functions as an input port and the state of that input pin is

transmitted to the controller from the DO pin.

• When the input state is low, the data will be 0, and when

the state is high, the data will be 1.

Circuit configuration

No. 5175-8/24

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