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PF282-07
SED1278F/D
SED1278F/D
Dot Matrix LCD Controller Driver
1/8, 1/11 or 1/16 Duty Dot Matrix Drive
ROM 240 characters
Built-in Character Generator ROM and RAM ( )
RAM 8 characters
Maximum Simultaneous Display of 80 Characters
(With extension LCD driver)
DESCRIPTION
The SED1278F/D is a dot matrix LCD controller/driver which is dedicated to character display. It is capable of
displaying up to 80 characters under 4-bit/8-bit MPU control.
The built-in cha
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SED1278F/D PIN CONFIGURATION QFP5-80pin SEG38 DB1 65 60 55 50 45 40 SEG37 DB0 SEG36 E SEG35 R/W SEG34 RS 70 SEG33 35 D0 SEG32 FR SEG31 VDD SED1278F SEG30 XSCL SEG29 LP INDEX 75 SEG28 V5 30 SEG27 V4 SEG26 V3 SEG25 V2 SEG24 V1 80 510 15 2025 SEG23 1 OSC2 Unit: mm PIN DESCRIPTION Symbol No. of signals Function RS 1 Register select signal R/W 1 Read/write select signal 1 E 1 Read/write execute signal DB0 to DB7 8 Data bus LP 1 Data latching pulse XSCL 1 Data transfer clock FR 1 LCD AC driving sign
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SED1278F/D ELECTRICAL CHARACTERISTICS DC Characteristics (V =5.0V– 10%, V =0V, Ta=-20 to 75˚C) DD SS Applicable Characteristic Symbol Condition Min. Typ. Max. Unit Pin "H" level input voltage (1) V 2.0 — V V IH1 DB0~DB7 DD RS, R/W, E "L" level input voltage (1) V V — 0.8 V IL1 SS "H" level input voltage (2) V OSC1 V -1.0 — V V IH2 DD DD "L" level input voltage (2) V V — 1.0 V IL2 SS DB0~DB7 "H" level output voltage (1) V I =-0.205mA 2.4 — — V OH1 OH "L" level output voltage (1) V I =1.6mA — —
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SED1278F/D Timing Chart Read Cycle V V IH1 IH1 RS V V IL1 IL1 t AH t AS V V R/W IH1 IH1 t AH t WEH t fE V V IH1 IH1 V V V IL1 IL1 IL1 E t t fE DHR t RD V Significant V OH1 OH1 DB0 to DB7 V V OL1 Data OL1 t cycE Write Cycle V V IH1 IH1 RS V V IL1 IL1 t AH t AS R/W V V IL1 IL1 t AH t WEH t fE V V IH1 IH1 V V V IL1 IL1 IL1 E t t fE DH t DS V Significant V IH1 IH1 DB0 to DB7 V V IL1 Data IL1 t cycE DISPLAY COMMAND Parameter RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Note CLEAR DISPLAY 0 0 0 0
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… … SED1278F/D PACKAGE DIMENSIONS Plastic QFP5-80pin – 0.4 25.6 – 0.1 20 64 41 65 40 – – INDEX 80 25 1 24 – 0.1 – 0.8 0.35 – 0.05 0.15 0° 12° 1.5 2.8 Unit: mm LCD PANEL INTERFACE EXAMPLE (2 lines 20 characters) SED1278F/D LCD COM1 16 16 100 dots COM16 SEG1 40 60 SEG40 DO DO DO1 OPEN … D1 DO0 SED1181F/D LA LP XSCL FR V DD V SS V2 V3 V5 OSC1 OSC2 R f SED1278F/D is usually connected to 8-bit MPU via I/O ports. 5 3.4max 0.1 0.26 2.7 LP XSCL FR SEG0 V DD V SS SEG59 V2 V3 V SSH 0.1 14 0.4 19.6
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SED1278F/D SED1278D PAD LAYOUT Unit: m 4,500 24 1 25 80 Y X (0, 0) Monitor Pad 40 65 41 64 Pad size: 109 109 PAD COORDINATION Unit: m Pad No. Pad Name X Y Pad No. Pad Name X Y Pad No. Pad Name X Y 1 SEG22 2,087 1,671 28 V -2,087 819 55 COM9 452 -1,671 3 2 SEG21 1,905 29 V 637 56 COM10 633 4 3 SEG20 1,723 30 V 455 57 COM11 814 5 4 SEG19 1,541 31 LP 273 58 COM12 995 5 SEG18 1,359 32 XSCL 91 59 COM13 1,177 6 SEG17 1,177 33 V -91 60 COM14 1,359 CC 7 SEG16 995 34 FR -273 61 COM15 1,541 8
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SED1278F/D SED1278D CHARACTER FONT OA 7
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SED1278F/D SED1278F D CHARACTER FONT OB/ OB 8
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SED1278F/D SED1278F D CHARACTER FONT OC/ OC 9
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SED1278F/D SED1278F /D CHARACTER FONT OD OE 10
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SED1278F/D SED1278F D CHARACTER FONT OG/ OG 11
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SED1278F/D SED1278F D CHARACTER FONT OH/ OH 12
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SED1278F/D NOTICE No part of this material may be reproduced or duplicated in any form or by any means without the written permission of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notice. Seiko Epson does not assume any liability of any kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and, further, there is no representation that this material is applicable to products requiring hi
