.

Power supply pin

.

Crystal oscillator, input amplifier pin

.

FIF1, FIF2, FIF3: FM IF offset value select pin

FIF1

00001111

FIF2

00110011

FIF3

01010101

IF (MHz)

+10.700

+10.725

+10.675

+10.750

–10.700

–10.725

–10.675

–10.650

.

AIF1, AIF2: AM IF offset value select pin

AIF1

0011

AIF2

1001

IF (kHz)

+450 (1)

+450 (2)

+455

+469

Display step

10 kHz

1 kHz step

1: High level

0: Low level

(Note) 450 kHz (1): 10 kHz-step display, others: 1 kHz-step display

.

FMI, AMI: Local OSC signal input pin

FMI: For FM

AMI: For MW, LW

.

FM/AM:

FM/MW, LW select pin

FM:

High level

MW, LW: Low level

.

CTR/CLK: Frequency display/time display select pin

CTR (Counter): High level

CLK (Clock):

Low level

.

DEMAND: Input pin for instructing execution of setting

CTR/CLK

DEMAND

MODE

0

1

Mode of setting by the time signal and hours-minutes setting mode

0

0

Time display mode

.

SET:

Input pin for setting hours-minutes

This pin is set at ‘‘M’’ level normally. The input signal of ‘‘H’’/‘‘L’’ level acts as follows:

When in the mode of setting by the time signal and hours-minutes setting mode (CTR/CLK = ‘‘L’’, DEMAND = ‘‘H’’)

High level: Execution of hours setting

Advance ata2Hz rate 1.2 seconds after the pin is set to ‘‘H’’ level.

Low level: Execution of setting by the time signal and minutes setting

Advance ata2Hz rate 1.2 seconds after the pin is set to ‘‘L’’ level.

Setting by the time signal is executed when the pin is set off within 1.0 second after set to ‘‘L’’ level.

No carry to high-order digit occurs.

.

INHI:

Input pin for turning OFF the segment pins, inhibiting the SET/DEMAND pin from functioning, and preventing the

AMI amp from operating

High level: Normal operation

Low level: Segment pin OFF, SET/DEMAND pin function inhibit

.

12H/24H: Input pin for selecting 12-hour system with PM sign/24-hour system

High level: 12-hour system with PM sign

Low level: 24-hour system

Crystal oscillator

Input amplifier

LC7267

No. 1511- 4/10