MSM5547RS

更新时间： 2024-09-21 13:11:51

品牌	Logo	应用领域
冲电气 - OKI		时钟
页数	文件大小	规格书
10页	118K
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数据手册

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MSM5547RS 数据手册

FEDL5547-03

This version: May. 2000

Previous version: Nov. 1999

¡ Semiconductor

MSM5547

¡ Semiconductor

MSM5547

Digital Clock

GENERAL DESCRIPTION

MSM5547 is a clock IC having a wide power supply range with 4.194304 MHz original

oscillation. MSM5547 is a 12 hour cycle AM/PM clock for a static fluorescent character display

tube. Time correction is in hour, minute and 30 minute adjustments. Hour and minute are

corrected by a 2 Hz fast-forward function. MSM5547 also has a contrast adjustment function for

the fluorescent character display tube, which can set four levels of contrast, including 100%

duty.

FEATURES

• 12 hour clock (AM/PM)

• Applied for static fluorescent character display tube

• Wide power supply range: 4 to 16V

• 4.194304 MHz original oscillation

• 4 levels of contrast can be selected

• Package options:

44-pin plastic QFP (QFP44-P-910-0.80-L2)

(Product name: MSM5547GS-L2)

BLOCK DIAGRAM

CMOS

64 Hz

1 Hz

a₁

OSC OUT

Oscil-

1 Hz

Frequency dividers

lation

OSC IN

V_DD

b₁

TEST 1

TEST 2

TEST 3

Test

1 / 60

adjust-

ment

Decod-

V_DD

Minute counter

seg-

V_SS

(1 / 60)

ment

A/C

Decod-

Hour counter

(1 / 12)

g₃

b₄

seg-

ment

c₄

V_SSV_DD

DIM CONT 1

DIM CONT 2

DIM

Con-

trast

adjust-

ment

V_DD

V_SS

TEST 4

1/10

12 3 4 5 6 7...10

中文翻译

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