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AN.No.G1216B1N000-3D0E
LIQUID CRYSTAL DISPLAY MODULE
G 1 2 1 6 B 1 N 0 0 0
USER’S MANUAL
Seiko Instruments Inc.
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AN.No.G1216B1N000-3D0E This manual provides technical information covering functions and operational instructions for the G1216 liquid crystal display modules made by Seiko Instruments Inc. Please read through this manual before operating the product. Distribution of this manual to third parties for any purpose other than operation of the product is prohibited. The descriptions herein are subject to change without prior notice. Revision Record Version Revision Date 1 Or
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AN.No.G1216B1N000-3D0E CONTENTS 1. GENERAL 1.1 General..................................................................................................... 1 1.2 Features.................................................................................................... 1 1.3 Absolute Maximum Ratings (excluding LED backlight)............................ 2 1.4 Mechanical Characteristics....................................................................... 2 1.5 Electrical Characteristics (exclud
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AN.No.G1216B1N000-3D0E 1. GENERAL 1.1 General The G1216 is a very thin LCD module on which a full-dot matrix LCD panel and a CMOS IC driver are integrated. The LCD panel used here features wide viewing angle and high contrast. This full dot configuration allows a wide variety of patterns to be displayed depending upon the input data. The display position is the intersection point of the matrix transparent electrodes. This prevents display distortion and displacement. Incorporating a displa
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AN.No.G1216B1N000-3D0E 1.3 Absolute Maximum Ratings (excluding LED backlight) Vss = 0 V Item Symbol Conditions Min. Max. Unit Power supply V Ta = 25 C -0.3 7.0 V DD voltage V 50 10%RH V -19.0 V + 0.3 V LC DD DD Input voltage V -0.3 V + 0.3 V IN DD Operating T 65%RH -20 +70 C opr temperature Storage T -30 +80 C stg temperature Storage 48 hrs +20 +85 %RH humidity 1000 hrs +20 +65 %RH 1.4 Mechanical Characteristics Item Standard Dot configuration 128 64 dot Module dimensions
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Optical Characteristics -V LED backlight: OFF FRM DD LC Sym. Temp. Max. Remark θ ─ ─ -15 1 ≥ ∅ ° θ ° C ─ ─ 2 θ - θ ─ ─ 2 1 Refer to θ ─ ─ -20 1 ≥ 1 and 2 ∅ ° θ ° C ─ ─ 2 θ - θ ─ ─ 2 1 θ ° Contrast C ∅ ° ° C ─ ─ Note 3 θ ° t ─ ∅ ° ° C t ─ Response time ms Note 4 θ ° t ─ ∅ ° -20 ° C t ─ Measuring instrument : Canon illuminometer LC-3S θ ∅ θ 1 θ 2 Z ( θ ° ) Cmax. (reflective LCD) Contrast C θ2 θ Y ’ ( ∅ ° ) θ1 X ’ ∅ ° ) θ θ 1 2 ∅ Z ’ Remark: Y ( ∅ ° ) θ at Cmax do ( θ ° ) 3 - - not alway
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Note 4: Definition of response time Note 3: Definition of contrast (C) V (V) opr B 2 B 2 (%) B 1 t t 0 V t : opr f t : Response time (fall) voltage(V) LC panel life time Conditions Standard Unit 25 C 10 C ° ± ° 1 Life time 100,000 or more hrs 1 Definition of life time: the time up to occurrence of any of the following: Contrast reduces to 30% of the initial value. Current consumption becomes three times the initial value. Orientation deteriorates significantly. LED backlight characteris
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l characteristics Ta = 25 ° C Meas. condition Min. Typ. Unit V I =90 mA 3.8 4.1 4.4 V F F Reverse current I V =8 V 0.9 mA ─ ─ R R (3) Number of LED chips=20 (4) Min. Max. Unit B 1.0 2.0 ─ nit P Ta=2 5 ° C ±3 ° C I = 90 mA F f V : Optimum LC drive voltage LC Display OFF (Entire display data= “ L ” ) Life time Measurement conditions Standard Unit Ta=25 ° C ± 10 ° C 1 Life time 50,000 or more hrs I =90 mA F 1 Definition of life time: The time until the brightness decreases to on
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Dimensions Unit: mm ± Figure 1 Dimensions I/O terminal functions No. Functions No. Functions 1 V 11 DD 7 2 V GND: 0 V 12 3 V LC drive voltage 13 LC 4 14 0 5 15 R/W Write 1 6 16 D/I Data/Instruction 2 7 17 E 3 1 8 18 F GND Frame ground 4 9 19 5 10 20 6 1 F is connected to the metallic frame of the module. Use this frame when grounding. GND 6 - - LED cathode LEDC Data bus DB LED anode LEDA Data bus DB Data bus DB Enable Data bus DB Data bus DB Read/ Data bus DB Reset RST Data bus (LSB) DB C
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AN.No.G1216B1N000-3D0E 2. CIRCUIT CONFIGURATION 2.1 Block Diagram This product consists of two HD61202 segment drivers, an HD61203 common driver and a bias voltage generator. Figure 2 shows the block diagram. DB to DB 0 7 RST, R/W, D / I, E CS2 CS1 V LC V , V , V , V a c d f Bias Voltage Generator V a V V DD b V e V f FRM Segment Driver 1 Segment Driver 2 V M SS CL2 1 64 64 2 Common Driver 64 128 64 full dot matrix LCD LEDA LED Backlight LEDC Figure 2 Block Diagram 2.2 Segment Drive
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AN.No.G1216B1N000-3D0E 2.2.1 Block Diagram (Segment Driver) DB to DB CS R/W D/I E 0 7 V V V RST DD SS LC 8 Segment Driver Interface Control Input and Output Buffer Busy Flag 8 8 Output Input Instruction Register Register Register 9 6 Display Start Line 8 X, Y-Address Display ON/OFF Register Counter 8 9 6 Z-Address Display Data RAM Counter 4096 bit 6 64 Display Data Latch 64 4 LC Driver V a M 1 2 CL FRM Y1 Y2 Y64 V c V d V f Figure 3 Segment Driver - 8 -
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AN.No.G1216B1N000-3D0E 2.2.2 Functions and Operations of Main Blocks (1) Interface Control Unit The interface control unit consists of the following blocks: Input and output buffer Input and output register Instruction register The above blocks are selected according to the following combinations of R/W and D/I signals: D / I R / W Functions 1 1 Output Register Read Internal Operation (Display Data RAM Output Register) 10 Input Register Write Internal Operation (Input Resister Dis
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AN.No.G1216B1N000-3D0E In order to read the content of the output register, the Chip Select must be selected, D/I must be 1, and R/W must be 1. When executing the “Read” instruction, the contents of the output register stored at that time are output during the time that “E” is 1. When “E” falls, display data of the currently indicated address is written in the output register. After that, the address advances by one. The contents of the output register are rewritten by the Read instruction.
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AN.No.G1216B1N000-3D0E (4) Display start line register The display start line register is a register which determines the line address (see Figure 6) for which data is displayed on the top line of the LCD screen when displaying the contents of the display data RAM on the LCD screen. It is also used to scroll the display. The 6 bit (0 to 63) display start line information is written in this register by the Display Start Line Set Instruction. The contents of this register are transmitted to addre
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AN.No.G1216B1N000-3D0E COM1 Display pattern (Display start line: 0) COM2 COM3 COM4 COM5 COM6 COM7 COM8 Common driver output COM9 X to X 1 64 COM62 COM63 COM64 Segment driver output Y to Y 1 2 3 4 5 62 63 64 1 64 Line address Data inside DB (LSB) 0 1 1 1 0 0 0 1 0 Line 0 display RAM DB 1 0 0 0 1 0 0 1 1 Line 1 X- address DB 1 0 0 0 1 0 0 1 Line 2 (page) 2 DB 1 0 0 0 1 1 0 1 3 X=0 DB 1 1 1 1 1 0 1 1 4 DB 1 0 0 0 1 0 0 1 5 DB 1 0 0 0 1 0 0 1 6 DB (MSB) 0 0 0 0 0 0 0 0 7 0 0 0 0 X=1 X=2 0 1
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AN.No.G1216B1N000-3D0E Y-address counter This counter sets the address by instruction and is automatically advanced by the read/write operation. Counting is performed by looping the values 0 to 63. 2.3 Common driver (HD61203) The common driver is a 64 drive output CMOS IC. Incorporating an oscillation circuit, this driver generates the common signal and timing signals (LC AC drive control, and one-frame timing signal) necessary for the LC display, and controls the display by supplying the
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AN.No.G1216B1N000-3D0E 3. OPERATING INSTRUCTIONS 3.1 Terminal Functions Table 1 Terminal Functions Signal QTY I/O Destination Functions DB to DB 0 7 8 I/O MPU Common terminal for tristate input and output, and data bus. Enable E 1 Input MPU Write (R/W=0):Latches data of DB to DB at the fall of E. 0 7 Read (R/W=1):Outputs data to DB to DB while “E” keeps a 0 7 high level. Read/Write selection R/W 1 Input MPU R/W=1: When E=1 and CS1=0 or CS2=0, the data is output to DB to DB and read is avail
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AN.No.G1216B1N000-3D0E 3.2 Timing Characteristics Item Symbol Min. Typ. Max. unit Note t 1000 ns 1, 2 E cycle time CYC P 450 ns 1, 2 E pulse width (H) WEH P 450 ns 1, 2 E pulse width (L) WEL t 25 ns 1, 2 E rise time r t 25 ns 1, 2 E fall time f t 140 ns 1, 2 Address setup time AS t 10 ns 1, 2 Address hold time AH t 200 ns 1 Data setup time DSW t 320 ns 2, 3 Data delay time DDR t 10 ns 1 Data hold time during write DHW t 20 ns 2 Data hold time during read
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AN.No.G1216B1N000-3D0E 3.3 Reset Function Setting the RST terminal to a low level when the power is on allows for initial setup. Display OFF Display start line register: Set address 0. While the RST remains at a low level, instructions other than the status read cannot be accepted. Execute other instructions after confirming that DB =0 (reset release) and DB =0 (ready) , using the 4 7 status read instruction. The power conditions for power-on initial setup are as follows:. Item Symbol Min T
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AN.No.G1216B1N000-3D0E 3.4 Instructions 3.4.1 General Instructions are listed on Table 2. Instructions other than the Status Read instruction will not be executed if they are sent while another instruction is already being executed. The busy flag is “1” when executing the instruction. Check whether or not the flag is “1” before transmitting the instructions from the MPU. Table 2 List of Instructions Code Instruction Function R/W D / I DB DB DB DB DB DB DB DB 7 6 5 4 3 2 1 0 Turns ON / OFF t
