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  NEC Electronic Components Datasheet  

D7225G Datasheet

UPD7225G

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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD7225
PROGRAMMABLE LCD CONTROLLER/DRIVER
The µPD7225 is a software-programmable LCD (Liquid Crystal Display) controller/driver. The µPD7225 can be
serially interfaced with the CPU in a microcomputer and can directly drive 2, 3, or 4-time division LCD. The µPD7225
contains a segment decoder which can generate specific segment patterns. In addition, the µPD7225 can be used to
control on/off (blinking) operation of a display.
FEATURES
• Can directly drive LCD
• Programmable time-division multiplexing
Static drive
Divide-by-2, 3, or -4 time division multiplexing
• Number of digits displayed
7-segment
Divide-by-4 time division ............... 16 digits
Divide-by-3 time division ............... 10 2/3 digits
Divide-by-2 time division ............... 8 digits
Static................................................. 4 digits
14-segment
Divide-by-4 time division ............... 8 digits
• Bias method
Static, 1/2, 1/3
• Segment decoder output
7-segment : Numeric characters 0 to 9, six symbols
14-segment : 36 alphanumeric characters, 13 symbols
• Blinking operation
• Multi-chip configuration possible
• 8-bit serials interface
75X series and 78K series compatible
• CMOS
• Single power supply
ORDERING INFORMATION
Part Number
µPD7225G00
µPD7225G01
µPD7225GB-3B7
µPD7225GC-AB6
Package
52-pin plastic QFP (14 × 14 mm)
52-pin plastic QFP (straight) ( 14 mm)
56-pin plastic QFP (10 × 10 mm)
52-pin plastic QFP (14 × 14 mm)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. S14308EJ6V0DS00 (6th edition)
(O.D. No. IC-1555)
Date Published June 1999 N CP (K)
Printed in Japan
The mark shows major revised points.
©
1986, 1999


  NEC Electronic Components Datasheet  

D7225G Datasheet

UPD7225G

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D7225G pdf
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PIN CONFIGURATION: (Top View)
µPD7225G00
µPD7225G01
µPD7225GC-AB6
52-pin plastic QFP (14 × 14 mm)
52-pin plastic QFP (straight) ( 14 mm)
52-pin plastic QFP (14 × 14 mm)
µPD7225
CL2
/SYNC
VLC1
VLC2
VLC3
VSS
VDD
/SCK
SI
/CS
/BUSY
C, /D
/RESET
52 51 50 49 48 47 46 45 44 43 42 41 40
1 39
2 38
3 37
4 36
5 35
6 34
7 33
8 32
9 31
10 30
11 29
12 28
13 27
14 15 16 17 18 19 20 21 22 23 24 25 26
S19
S18
S17
S16
S15
S14
VDD
S13
S12
S11
S10
S9
S8
SI : Serial Input
/SCK
: Serial Clock
C, /D
: Command/Data
/CS : Chip Select
/BUSY
: Busy
SYNC
: Sync
S0-S31
: Segment
COM0-COM3 : Common
NC : Non-connection
CL1 : External Resistor 1 (External Clock)
CL2 : External Resistor 2
RESET : Reset
VLC1-VLC3 : Power Supply For LCD Drive
VDD : Power Supply
VSS : Ground
IC : Internally Connected
Remark /××× indicates active low signal.
2 Data Sheet S14308EJ6V0DS00


Part Number D7225G
Description UPD7225G
Maker NEC
Total Page 30 Pages
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