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MSC1210 Datasheet

  • MSC1210

  • Clock For 1/2 Duty VFD

  • 11頁

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FEDL1210-03
隆 Semiconductor
FEDL1210-03
This version: May. 2000
MSC1210
Previous version: Jan. 1998
隆 Semiconductor
MSC1210
Clock For 1/2 Duty VFD
GENERAL DESCRIPTION
The MSC1210 is a clock for use in 1/2 duty VFD applications, featuring 4.194304 MHz crystal
controlled oscillator time base, wide ranges of power supply, and 12-hour format. The clock
correction rages are minutes, hours, and a 30-min ADJ (30-minute adjustment). The two clock
correction modes are available; one is 1Push-1ADJ correction mode, the other is 2 Hz fast advance
correction mode.
The MSC1210 is also provided with a function of 4-degree-switchable VFD luminance adjustment.
FEATURES
鈥?12-hour format
鈥?Wide ranges of power supply: 4 V to 18 V (Built-in constant-voltage circuit)
鈥?Usable for 1/2 Duty VFD
鈥?4.194304 MHz (crystal oscillation)
鈥?Luminance: Switchable among 4 degrees
鈥?Package options:
32-pin plastic SSOP
(SSOP32-P-430-1.00-K) (Product name: MSC1210GS-K)
30-pin plastic shrink DIP (SDIP30-P-400-1.778)
(Product name: MSC1210SS)
BLOCK DIAGRAM
V
DD
64 Hz
V
DD
CONSTANT VOLTAGE CIRCUIT
V
DD
OSCILLATOR
FREQUENCY DIVIDER
1a, 3a
1b, 3b
OUTPUT DRIVER
V
CC
V
CC
V
SS
XT
XT
TEST
CLOCK ADJUSTMENT
V
DD
MINUTE COUNTER
HOUR COUNTER
SEGMENT DECODER
1/60
1f, 3f
1g, 3g
2a, 2d
2b, 4b, 4c
2c, col
2f
2g
2c, col'
A/C
V
DD
ZA
HS
MS
DIM2
DIM1
BLANK
LUMINANCE ADJUSTMENT
GRID DECODER
GR1
GR2
1/11

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