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ICM7232

(ICM7231 / ICM7232) Numeric/Alphanumeric Triplexed LCD Display Drivers


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ICM7232 pdf
TM ICM7231, ICM7232
August 1997
Numeric/Alphanumeric Triplexed
LCD Display Drivers
Features
• ICM7231 Drives 8 Digits of 7 Segments with Two
Independent Annunciators Per Digit Address and Data
Input in Parallel Format
• ICM7232 Drives 10 Digits of 7 Segments with Two
Independent Annunciators Per Digit Address and Data
Input in Serial Format
• All Signals Required to Drive Rows and Columns of
Triplexed LCD Display are Provided
• Display Voltage Independent of Power Supply
• On-Chip Oscillator Provides All Display Timing
• Total Power Consumption Typically 200µW, Maximum
500µW at 5V
• Low-Power Shutdown Mode Retains Data With 5µW
Typical Power Consumption at 5V, 1µW at 2V
• Direct Interface to High-Speed Microprocessors
Description
The ICM7231 and ICM7232 family of integrated circuits are
designed to generate the voltage levels and switching wave-
forms required to drive triplexed liquid-crystal displays.
These chips also include input buffer and digit address
decoding circuitry allowing six bits of input data to be
decoded into 64 independent combinations of the output
segments of the selected digit.
The family is designed to interface to modern high-
performance microprocessors and microcomputers and
ease system requirements for ROM space and CPU time
needed to service a display.
Ordering Information
PART NUMBER
TEMP. RANGE (oC)
PACKAGE
ICM7231BFIJL
-25 to 85
40 Ld CERDIP
ICM7231BFIPL
-25 to 85
40 Ld PDIP
ICM7232BFIPL
-25 to 85
40 Ld PDIP
ICM7232CRIPL
-25 to 85
40 Ld PDIP
NOTE:
All versions intended for triplexed LCD displays.
NUMBER OF DIGITS
8 Digit
8 Digit
10 Digit
10 Digit
INPUT FORMAT
Parallel
Parallel
Serial
Serial
PKG. NO.
F40.6
E40.6
E40.6
E40.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
19
FN3161.1



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ICM7232 pdf
ICM7231, ICM7232
Pinouts
ICM7231BF
(PDIP, CERDIP)
TOP VIEW
CS 1
VDISP 2
BP1 3
BP2 4
BP3 5
b1, c1, an11 6
a1, g1, d1 7
f1, e1, an21 8
b2, c2, an12 9
a2, g2, d2 10
f2, e2, an22 11
b3, c3, an13 12
a3, g3, d3 13
f3, e3, an23 14
b4, c4, an14 15
a4, g4, d4 16
f4, e4, an24 17
b5, c5, an15 18
a5, g5, d5 19
f5, e5, an25 20
40 VDD
39 A2
38 A1
37 A0
36 VSS
35 BD3
34 BD2
33 BD1
32 BD0
31 AN2
30 AN1
29 f8, a8, an28
28 a8, g8, d8
27 b8, c8, an18
26 f7, e7, an27
25 a7, g7, d7
24 b7, c7, an17
23 f6, e6, an26
22 a6, g6, d6
21 b6, c6, an16
ICM7232AF, BF
(PDIP, CERDIP)
TOP VIEW
DATA CLOCK
INPUT
VDISP
BP1
1
2
3
BP2 4
BP3 5
b1, c1, an11 6
a1, g1, d1 7
f1, e1, an21 8
b2, c2, an12 9
a2, g2, d2 10
f2, e2, an22 11
b3, c3, an13 12
a3, g3, d3 13
f3, e3, an23 14
b4, c4, an14 15
a4, g4, d4 16
f4, e4, an24 17
b5, c5, an15 18
a5, g5, d5 19
f5, e5, an25 20
40 VDD
39 WRITE INPUT
38 DATA INPUT
37 DATA ACCEPTED
OUTPUT
36 VSS
35 f10, e10, an210
34 a10, g10, d10
33 b10, c10, an110
32 f9, e9, an29
31 a9, g9, d9
30 b9, c9, an19
29 f8, a8, an28
28 a8, g8, d8
27 b8, c8, an18
26 f7, e7, an27
25 a7, g7, d7
24 b7, c7, an17
23 f6, e6, an26
22 a6, g6, d6
21 b6, c6, an16
DATA CLOCK
INPUT
VDISP
BP1
1
2
3
BP2 4
BP3 5
b1, c1, an11 6
a1, g1, d1 7
f1, e1, an21 8
b2, c2, an12 9
a2, g2, d2 10
f2, e2, an22 11
b3, c3, an13 12
a3, g3, d3 13
f3, e3, an23 14
b4, c4, an14 15
a4, g4, d4 16
f4, e4, an24 17
b5, c5, an15 18
a5, g5, d5 19
f5, e5, an25 20
ICM7232CR
(PDIP)
TOP VIEW
40 VDD
39 WRITE INPUT
38 DATA INPUT
37 DATA ACCEPTED
OUTPUT
36 VSS
35 b6, c6, an16
34 a6, g6, d6
33 f6, e6, an26
32 b7, c7, an17
31 a7, g7, d7
30 f7, e7, an27
29 b8, c8, an18
28 a8, g8, d8
27 f8, a8, an28
26 b9, c9, an19
25 a9, g9, d9
24 f9, e9, an29
23 b10, c10, an110
22 a10, g10, d10
21 f10, e10, an210
20



Part Number ICM7232
Description (ICM7231 / ICM7232) Numeric/Alphanumeric Triplexed LCD Display Drivers
Maker Intersil Corporation - Intersil Corporation
Total Page 19 Pages
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