Purdy AND1743BST User Manual

Displays

AND1743BST-LED

Intelligent Character Display

AND1743BST-LED

Intelligent Character Display

The AND1743BST-LED is an STN, Transmissive, Negative, Wide Tempera­ture range liquid crystal display. It has a rear polarizer, white LED backlight, 6
o-clock viewing direction and black frame

Features

• STN Blue Negative, Transmissive

• 240 x 128 Dot

• White LED Backlight

• 6 O’clock Viewing Direction

• Wide Temperature Range

• LCD Module 1/128 Duty

• ROHS Compliant

Mechanical Characteristics

Item Standard Value Unit

Resolution 240 (W) x 128 (H) dots

Outline Dimensions 170.0 (W) * 95.0 (H) * 14.0 (D) max mm

Viewing Area 132.0 (W) x 76.0 (H) mm

Dot Size 0.47 (W) x 0.47 (H) mm

Dot Pitch 0.50 (W) x 0.50 (H) mm

LCD Type STN, Negative, Transmissive

Duty 1/128

Controller T6963C / Toshiba

DC/DC Converter Without

.

Absolute Maximum Ratings

Item Symbol Min. Max. Unit

Operating Temperature TOP -20 70 ºC

Storage Temperature TST -30 +80 ºC

Input Voltage V1 VSS VDD V

Supply Voltage VDD-VSS -0.3 +7 V

Supply Voltage for LCD VDD-V0 0 15 V

Electrical Absolute Maximum Ratings

Item Symbol Min. Max. Unit

Power Supply for Logic VDD-VSS -0.3 7.0 Volt

Power Supply for LCD VDD-VEE 0 24.0 Volt

Input Voltage V1 -0.3 VDD Volt

LED Power Dissipation PAD — 1140 mW

LED Forward Current IAF — 300 mA

LED Reverse Voltage VR 8 V

Product specifications contained herein may be changed without prior notice. It is therefore advisable to contact Purdy Electronics

before proceeding with the design of equipment incorporating this product.

Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918

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Displays

AND1743BST-LED

Intelligent Character Display

Electrical Characteristics

Item Symbol Condition Min. Typ. Max. Unit

Power Supply for Logic VDD-VSS – 4.5 5.0 5.5 V

VIL L Level 0 — 0.6 V

LCM Recommend

LCD Module Driving Voltage

Power Supply Current for LCM IDD VDD=5V

LED Forward Voltage VF — — 5.0 — V

LED Forward Current IF Vf=5V 180 200 240 mA

LED Reverse Current IR VR=8V — — 0.3 mA

Optical Characteristics

Item Symbol Condition Min. Typ. Max. Degree

φ f (12 o’clock)

Viewing Angle Range

Rise Time Tr

Fall Time Tf — 240 —

Frame Frequency Frm — 64 — Hz

Contrast Cr — 5 —

Brightness of Backlight L

Peak Emission Wavelength λ P X-0.28, Y=0.29 X=0.31, Y=0.32 X=0.34, Y=0.35 nm

φ b (6 o’clock) — 34 —

φ l (9 o’clock) — 35 —

φ r (3 o’clock) — 30 —

VIH H Level 2.2 — VDD V

Ta = -20ºC — — — V

VDD-V0

Bias=1/12

IEE — 24 —

When Cr ≥ 2

VDD-VO=17.8 V

Ta=25ºC

VF=5.0V

Ta = 25ºC 16.7 17.8 18.5 V

Ta = +70ºC — — — V

— 15.6 18 mA

VDD-VEE=17.8V

— 41 —

— 140 — mS

650 750 — cd/m

degree

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Environmental Absolute Maximum Ratings - Wide Temperature

Item Operating Storage

Min. Max. Min. Max.

Ambient Temperature -20 ºC +70 ºC -30 ºC +80 ºC

Humidity (without condensation) Note1,2 Note 1,3

Note 1: Background color changes slightly depending on ambient temperature. This phenomenom is reversible.
Note 2: Ta ≤ 70ºC: 75 RH max; Ta > 70 ºC: absolute humidity must be lower than the humidity of 75% RH at 70ºC
Note 3: Ta at -30ºC will be <48 hrs, at 80ºC will be <120 hrs when humidity is higher than 75%.

Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918

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Displays

AC Characteristics - Bus Timing (Vss=0V, VDD=5V)

Item Symbol Min. Typ. Max. Unit

C/D Set-up Time tCDS 100 — — ns

C/D Hold Time tCDH 10 — — ns

CE, RD, WR Pulse Width tCDS, tRD, tWR 80 — — ns

Data Set-Up Time tDS 80 — — ns

Data Hold Time tDH 40 — — ns

Access Time tACC — — 150 ns

Output Hold Time tOH 10 — 50 ns

AND1743BST-LED

Intelligent Character Display

Block Diagram

3

Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918

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Displays

Power Supply

AND1743BST-LED

Intelligent Character Display

Interface Pin Assignment

Pin No. Pin Out Function Description Level Pin No Pin Out Function Description Level

1 FGND Frame Ground — 11 DB0 Data Bit 0 H/L

2 VSS Power Supply Ground 0V 12 DB1 Data Bit 1 H/L

3 VDD Power Supply Voltage 5V 13 DB2 Data Bit 2 H/L

4 V0 Contrast Adjustment Voltage — 14 DB3 Data Bit 3 H/L

5 /WR Write Signal L 15 DB4 Data Bit 4 H/L

6 /RD Read Signal L 16 DB5 Data Bit 5 H/L

7 /CE Enable Signal L 17 DB6 Data Bit 6 H/L

8 C/D Wr = “l”, C/D = “H”: Command Write; WR =

“L”, C/D = “L:”: Data Write; RD = “L”, C/D =
“H”: Status Read; RD = “L”, C/D = “L”: Data
Read

9 NC No Connection — 19 FS

10 /RST Reset Signal L 20 RV Display Data reverse: RV=”H”:

H/L 18 DB7 Data Bit 7 H/L

H: 6*8, L: 8*8 Select of Font H/L

Reverse display, RV=”L”: Nor­mal display

H/L

Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918

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Displays

Mechanical Drawing

AND1743BST-LED

Intelligent Character Display

Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918

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Displays

CG-Rom Character Code Map

AND1743BST-LED

Intelligent Character Display

Display Pattern

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