LC72136 datasheet(6/23 Pages) SANYO

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Pin Functions

No. 5038-6/23

LC72136, 72136M

Pin No.

Symbol

(MFP pin numbers

Type

Functions

Circuit configuration

are in parentheses.)

1 (1)

22 (24)

16 (17)

15 (16)

3 (4)

5 (6)

4 (5)

6 (7)

17 (18)

21 (22)

XIN

XOUT

FMIN

AMIN

VDD

VSS

Xtal

Local oscillator

signal input

Local oscillator

signal input

Chip enable

Clock

Input data

Output data

Power supply

Ground

• Crystal oscillator connections (75 kHz)

• The extremely high input impedance of the XIN pins

means that applications must take the possibility of

leakage into account.

• FMIN is selected when the serial data input DVS bit is

set to 1.

• The input frequency range is from 10 to 160 MHz.

• The input signal passes through the internal divide-by-

two prescaler and is input to the swallow counter.

• The divisor can be in the range 272 to 65535. However,

since the signal has passed through the divide-by-two

prescaler, the actual divisor is twice the set value.

• AMIN is selected when the serial data input DVS bit is

set to 0.

• When the serial data input SNS bit is set to 1:

— The input frequency range is 2 to 40 MHz.

— The signal is directly input to the swallow counter.

— The divisor can be in the range 272 to 65535, and

the divisor used will be the value set.

• When the serial data input SNS bit is set to 0:

— The input frequency range is 0.5 to 10 MHz.

— The signal is directly input to a 12-bit programmable

divider.

— The divisor can be in the range 4 to 4095, and the

divisor used will be the value set.

• Set this pin high when inputting (DI) or outputting (DO)

serial data.

• Used as the synchronization clock when inputting (DI) or

outputting (DO) serial data.

• Inputs serial data transferred from the controller to the

LC72136.

• Outputs serial data transferred from the LC72136 to the

controller. The data output is determined by the DOC0 to

DOC2 bits in the serial data.

• The LC72136 power supply pin. (VDD = 4.5 to 5.5 V)

• The power on reset circuit operates when power is first

applied.

• The LC72136 ground

Continued on next page.

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