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Heltec Automation HTE029A1 Technical Specification

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TECHNICAL
SPECIFICATION
Model Number : HTE029A1
Description:
Chengdu Heltec Automation technology CO., LTD.
Screen Size: 2.9"
Color: Black and White
Display Resolution: 296*128

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Summary of Contents for Heltec Automation HTE029A1

  • Page 1 TECHNICAL SPECIFICATION Model Number : HTE029A1 Screen Size: 2.9" Description: Color: Black and White Display Resolution: 296*128 Chengdu Heltec Automation technology CO., LTD.
  • Page 2 HTE029A1 Version Content Date Producer 2015/01/10 New release Modify Reference Circuit 2017/03/02 2017/06/22 Updating 2017/08/04 Modify Reference Circuit Modify Mechanical Drawing 2017/08/11 www.heltec.cn 2／30...

  • Page 3: Table Of Contents

    HTE029A1 CONTENTS General Description ......................4 Features ........................... 4 Application ..........................4 Mechanical Specification ....................4 Mechanical Drawing of EPD module ................5 Input/Output Terminals ......................6 6.1 Pin out List ......................6 6.2 MCU Interface ...................... 8 6.2.1 MCU Serial Peripheral Interface (4-wire SPI)......8 6.2.2 MCU Serial Peripheral Interface (3-wire SPI).

  • Page 4: General Description

    HTE029A1 1 General Description GDE029A1 is an Active Matrix Electrophoretic Display(AMEPD) , with interface and a reference system design. The 2.9'' active area contains 128× 296 pixels, and has 1 -bit B/W full display capabilities. An integrated circuit contains gate buffer, source buffer, interface, timing control logic, oscillator, DC-DC. SRAM.

  • Page 5: Mechanical Drawing Of Epd Module

    HTE029A1 5 Mechanical Drawing of EPD module TFT OD 79.00± 0.1 3.00 TFT AA 66.85± 0.1 3.50± 0.1 15.32 14.10 6.00 3.20 www.heltec.cn 5／30...

  • Page 6: Input/Output Terminals

    HTE029A1 Input/Output Terminals Pin out List Pin # Single Description Remark No connection and do not connect with other NC pins Keep Open N-Channel MOSFET Gate Drive Control RESE Current Sense Input for the Control Loop Negative Gate driving voltage...
  • Page 7 HTE029A1 Note 6-1: This pin (CS#) is the chip select input connecting to the MCU. The chip is enabled for MCU communication:only when CS# is pulled LOW. Note 6-2: This pin (D/C#) is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH,the data will be interpreted as data.

  • Page 8: Mcu Interface

    HTE029A1 MCU Interface 6.2.1 MCU Serial Peripheral Interface (4-wire SPI) The 4-wire SPI consists of SCLK (serial clock), SDIN (serial data), D/C# and CS#. D0 acts as SCLK and D1 acts as SDIN. Table -1 : Control pins of 4-wire Serial Peripheral interface...

  • Page 9: Mcu Serial Peripheral Interface (3-Wire Spi)

    HTE029A1 6.2.2 MCU Serial Peripheral Interface (3-wire SPI) The 3-wire serial interface consists of SCLK (serial clock), SDIN (serial data) and CS#. In SPI mode, D0 acts as SCLK and D1 acts as SDIN. The operation is similar to 4-wire serial interface while D/C# pin is not used. There are altogether 9-bits will be shifted into the shift register in sequence: D/C# bit, D7 to D0 bit.

  • Page 10: External Temperature Sensor Operation

    HTE029A1 6.3 External Temperature Sensor operation There are two ways to let the module get the ambient temperature, use the external temperature sensor interface, The module provides two I/O lines [TSDA and TSCL] for connecting digital temperature sensor for temperature reading sensing. TSDA will be treated as SDA line and TSCL will be treated as SCL line.

  • Page 11: Command Table

    HTE029A1 7 Command Table R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command Description 1 Driver Output control Gate setting A7 A6 A5 A4 A3 A2 A1 A0 Set A[8:0] = 0C7h Set B[2:0] = 0h B2 B1 B0...
  • Page 12 HTE029A1 R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command Description 0 Temperature Sensor Write to temperature register. Control (Write A[7:0] – MSByte 01111111[POR] temperature register) B[7:0] – LSByte 11110000[POR] 0 Master Activation Activate Display Update Sequence...
  • Page 13 HTE029A1 R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command Description 0 Display Update Display Update Sequence Option: Control 2 Enable the stage for Master Activation Paramete (in Hex) Enable Clock Signal, Then Enable CP Then Load Temperature...
  • Page 14 HTE029A1 R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command Description 0 Write LUT register Write LUT register from MCU [240 bits], (excluding the VSH/VSL and Dummy bit) … … [30 bytes] 0 Set dummy line period Set A[7:0] = 1Bh...
  • Page 15 HTE029A1 R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command Description 0 Set RAM X - address Specify the start/end positions of the Start / End position window address in the X direction by an address unit...

  • Page 16: Reference Circuit

    HTE029A1 8 Reference Circuit Figure . 8-1 www.heltec.cn 16／30...
  • Page 17 HTE029A1 Figure . 8-2 www.heltec.cn 17／30...

  • Page 18: Maximum Ratings

    HTE029A1 9 MAXIMUM RATINGS Table 9-1: Maximum Ratings Symbol Parameter Rating Unit Logic supply voltage -0.5 to +4.0 Operation temperature range 0~50 ° C Storage temperature range -25~60 ° C DC CHARACTERISTICS The following specifications apply for: VSS=0V, VCI=3.3V, TOPR=25℃...

  • Page 19: Serial Peripheral Interface Timing

    HTE029A1 11 Serial Peripheral Interface Timing The following specifications apply for: VSS=0V, VCI=2.4V to 3.7V, T =25℃ Symbol Parameter Unit Clock Cycle Time cycle Address Setup Time Address Hold Time Chip Select Setup Time Chip Select Hold Time Write Data Setup Time...

  • Page 20: Typical Operating Sequence

    HTE029A1 Typical Operating Sequence 13.1 Normal Operation Flow Power On (Apply VCI) Reset the EPD driver IC Define the display size and the RAM address Turn on oscillator clock and DC/DC & regulator to generate the driving voltage Read temperature from external temperature sensor, then, load a waveform from OTP to LUT.

  • Page 21: Reference Program Code

    HTE029A1 13.2 Reference Program Code VCOM Setting Power On Note1 SPI(0x2c,value) (Apply VCI) Waveform Setting Note2 SPI(0x32,30 byte data) Init all the pin D/C#,CS#,D0,D1, RES# to high level, Set RAMX address counter SPI(0x4e,0x00) BS1 High BS1 Low Set RAMY address counter...

  • Page 22: Optical Characteristics

    HTE029A1 Optical characteristics 14.1 Specifications Measurements are made with that the illumination is under an angle of 45 degrees, the detection is perpendicular unless otherwise specified. T=25℃ CONDITIO SYMBOL PARAMETER TYPE UNIT Note Reflectance White Note 14-1 2Grey Level DS+(WS-DS)× n(m -1)

  • Page 23: Definition Of Contrast Ratio

    HTE029A1 14.2 Definition of contrast ratio The contrast ratio (CR) is the ratio between the reflectance in a full white area (R1) and the reflectance in a dark area (Rd)() : R1: white reflectance Rd: dark reflectance CR = R1/Rd 14.3...

  • Page 24: Handling, Safety, And Environment Requirements

    HTE029A1 HANDLING，SAFETY AND ENVIROMENTALREQUIREMENTS WARNING The display glass may break when it is dropped or bumped on a hard surface. Handle with care. Should the display break, do not touch the electrophoretic material. In case of contact with electrophoretic material, wash with water and soap.
  • Page 25 HTE029A1 Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of the specification is not implied.

  • Page 26: Reliability Test

    HTE029A1 16. Reliability test TEST CONDITION METHOD REMARK ℃， ， T=50 RH=30%RH High-Temperature Operation IEC 60 068-2-2Bb 240Hr Low-Temperature Operation T = 0℃ for 240 hrs IEC 60 068-2-2Ab T=70℃ RH=40%RH For 240Hr High-Temperature Storage IEC 60 068-2-2Bb Test in white pattern T = -25℃...

  • Page 27: Block Diagram

    HTE029A1 17 Block Diagram 18 PartA/PartB specification BORDER TFT AA Part B is fulfilled area Part A www.heltec.cn 27／30...

  • Page 28: Point And Line Standard

    HTE029A1 19 Point and line standard Shipment Inspection Standard Equipment：Electrical test fixture, Point gauge 36.7 (H) × 79(V) Outline dimension Part-A Active area Part-B Border area Unit：㎜ ×1.05(D) Temperature Humidity Illuminance Distance Time Angle Environment 800～ 300 ㎜ 35Sec 19℃～25℃...
  • Page 29 HTE029A1 L=long W=wide D=point size www.heltec.cn 29／30...

  • Page 30: Packing

    HTE029A1 20.Packing Packing Spec Sheet No DATE 2017.06.22 Part No GDE029A1 Page 一，Package Type: Box PRODUCT DRAWING 1.25 GDE029A1-ZX-A0 Box No 515*322*170 Box size 240PCS Containment 二,Inside package type:Plastic Tray unit：mm Step 1： 465*280*15 13 pcs Plastic Tray Material：Tray，EPE Anti-static 700*530*0.1...

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