CF5762AB0 datasheet(7/10 Pages) NPC

7 / 10 page

CF5762AB0

NIPPON PRECISION CIRCUITS INC.—7

MELODY FUNCTION DESCRIPTION

Melodies

There are 4 melodies stored, and which can be played hourly.

Time Function

If the following conditions are satisﬁed when a

HIGH-level hourly signal is input on MT, then

hourly melody output occurs. The hourly melody is a

combination of melody output and subsequent chime

signals. MT has a built-in pull-down resistor.

The number of chimes played are determined by

time detection in 12-hour mode.

1. The hourly signal turns OFF once before turning

2. Melody stop at night function is not set for cur-

rent time interval (see “Melody Stop at Night”)

3. Melody stop when dark function is not active

(see “Melody Stop when Dark”)

If S1 to S4 are all HIGH (no chime), then condition

number 2 is ignored. If the time information inputs

change state and an hourly signal on MT is input

during melody output, the output stops and then

starts again under the new conditions.

Melody Select Switching

The melody to be played is selected by the state of

SEL1 and SEL2. SEL1 and SEL2 have built-in pull-

down resistors.

Time Detection

The time information inputs are only read when the

hourly signal is input on MT. At all other times the

internal data does not change, even if the time infor-

mation inputs change state. The hours 1 through 12

are represented in 12-hour mode with an internal PM

ﬂag. The PM ﬂag reverses state when the hour

switches from 11 to 12, or from 12 to 11 if the time

setting is being reversed to adjust to the correct time.

When the S1 to S4 inputs are all HIGH, the melody

output plays without chimes. These inputs determine

the time detection and are read into internal registers

when the hourly signal is input on MT. Other input

combinations not shown are invalid. S1 to S4 have

built-in pull-down resistors.

SEL1

SEL2

Melody

(hourly signal)

LOW

Melody 1 + chime

HIGH

LOW

Melody 2 + chime

LOW

HIGH

Melody 3 + chime

HIGH

Melody 4 + chime

Time

LOW

HIGH

1 o’clock

LOW

HIGH

LOW

2 o’clock

LOW

HIGH

3 o’clock

LOW

HIGH

LOW

4 o’clock

LOW

HIGH

LOW

HIGH

5 o’clock

LOW

HIGH

LOW

6 o’clock

LOW

HIGH

7 o’clock

HIGH

LOW

8 o’clock

HIGH

LOW

HIGH

9 o’clock

HIGH

LOW

HIGH

LOW

10 o’clock

HIGH

LOW

HIGH

11 o’clock

HIGH

LOW

12 o’clock

LOW

No change

HIGH

No chime

CF5762AB0 bảng dữ liệu(PDF) 7 Page - Nippon Precision Circuits Inc

CF5762AB0 bảng dữ liệu(HTML) 7 Page - Nippon Precision Circuits Inc

Html Pages

1 2 3 4 5 6 7 8 9 10

bảng dữ liệu tải về

Link URL