HI-8045 Datasheet, PDF (1/6 Pages) Holt Integrated Circuits – CMOS HIGH VOLTAGE DISPLAY DRIVER

August 2005
HI-8045
CMOS HIGH VOLTAGE DISPLAY DRIVER
GENERAL DESCRIPTION
APPLICATIONS
The HI-8045 high voltage display driver is a low cost plastic,
80-segment version of the Holt HI-8040 display driver
series. The 20 mil package lead pitch allows the maximum
number of display driver segments in the smallest space.
An optional voltage converter can generate the negative
display drive voltage. Test inputs facilitate opens and
shorts testing. The backplane frequency is checked and,
as long as power is available, the segments are shut "Off" if
the frequency becomes too low.
! Dichroic Liquid Crystal Displays
! Standard Liquid Crystal Displays
! MEMS Drivers
PIN CONFIGURATION (Top View)
The HI-8045 and the HI-80XX series of display drivers all
control segment information in the same way. Data is
N/C
VSS
2
serially clocked into the device and the data for all segment
CS
3
CL
4
outputs are latched in parallel when the Load input transi-
LD
5
DIN
6
tions from high to low. With the Data Out from the shift
BPOSC
7
N/C
8
register available, devices may be cascaded to obtain more
N/C
9
BPIN
10
segment outputs. The shift register is 85 bits long.
N/C
11
CONVOUT
12
VDD
13
The die is metal mask programmable to provide for various
DOUT 85
CONVOSC
14
15
package and/or cascade tap options. Consult your Holt
VEE
16
T1
17
Sales representative to explore the possibilities.
T2
18
BP
19
S1
20
S2
21
S3
22
S4
23
S5
24
S6
25
HI-8045PQ
80 - SEGMENT
100 - PIN
PLASTIC
QUAD FLAT PACK
75
S55
74
S54
73
S53
72
S52
71
S51
70
S50
69
S49
68
S48
67
S47
66
S46
65
S45
64
S44
63
S43
62
S42
61
S41
60
S40
59
S39
58
S38
57
S37
56
S36
55
S35
54
S34
53
S33
52
S32
51
S31
FEATURES
! 4 MHz serial input data rate
! 80 segment outputs
! Cascadable
! 5 Volt inputs translated to 35 Volts
! Test pins allow hardware all "ON", all "OFF" or
alternating
! Monitors backplane oscillation and forces all
segments to "OFF" condition if below 10Hz
! Negative voltage converter available on-chip
! CMOS low power
! Industrial and JEDEC processing available
FUNCTIONAL BLOCK DIAGRAM
DIN Þ
CL Þ
CS Þ
LD Þ
BPOSC Þ
BPIN Þ
Oscillator
Divider
Voltage
Translator
High Voltage
Buffer
Þ BP
DATA IN
85 Stage
Shift Register
CLK
Þ^DO85UT
LE _{8 0 B i t L a t c h}
Voltage
Translators
High Voltage
Drivers
80 SEGMENTS
(DS8045 Rev. D)
HOLT INTEGRATED CIRCUITS
www.holtic.com
08/05