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HT6750A Datasheet

  • HT6750A

  • Date Printer

  • 8頁(yè)

  • HOLTEK

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HT6750A
Date Printer
Features
路
Operating voltage: 2.4V~5.5V
路
Operating current: < 3mA at 3.0V
路
Constant voltage output (1.8V鹵5%) at 2.4V~5.5V
路
32K crystal oscillator (Internal capacitor and resistor)
路
Calendar and time adjustment
路
Date imprinting modes
operating for driving lamp (1.8V/40mA)
路
LCD contrast can not distort at 2.4V~5.5V operating
路
LCD display drive 1/3 duty, 1/2 bias, frame frequency
(Y/M/D, D/H/Min, Imprint off, M/D/Y, D/M/Y)
路
Mode is selected by cyclically turning
路
4 film printing times is selectable or external input
is 42.67Hz
路
At power interrupt, data hold up > 1.0s
control (30ms/45ms/60ms/external control)
路
Direct resetting system
路
Lamp output time control
路
Provides module test circuit
(between V
DD
and V
SS
connect a 0.1mF capacitor)
路
Built-in power on reset function
General Description
The 6-Digital Timer is a camera data optical printer. Dis-
playing and printing of data (Year Month Day/Day Hour:
Minute/OFF/Month Day Year/Day Month Year) can be
selected by mode selection. Date updating is a fully au-
tomatic calendar from the year 1998.1.1 to 2049.12.31.
Block Diagram
C O M 1 ~ C O M 3 T E S T 2
O S C I
O S C O
O s c illa to r
D iv . 3 2 K
D iv . 6 0
D iv . 6 0
S E G O
R E S E
M O D
S E
S E
N
E
T
T
D iv . 3 2 K
L
C o n tro l
C ir c u it
D iv . 2 8 , 2 9 ,
3 0 o r 3 1
D iv . 2 4
V D D
V S S
V . 2
V . 4
L C 1
L C 2
T
D
X
Y e a r
C o u n te r
P r in t/L a m p
C o n tro l
M U X
M U X
M U X
Im - P r in t M a r k
L a m p
S E G 1
S E G 1 5
Rev. 1.00
1
January 17, 2003

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