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LM3121 Series

LM3121 Series

Product catalog summary

Outline Drawing: The document provides a detailed outline drawing of the LM3121B series LCD module, including dimensions and layout.

Terminal Functions: The module has 20 pins with specific functions:

Pin 1 (VSS): Ground power supply.
Pin 2 (VDD): Positive power supply.
Pin 3 (V0): LCD contrast reference.
Pin 4 (VOUT): LCD booster output for V0.
Pin 5 (/RES): Reset signal, with specific behavior for resetting and normal operation.
Pins 6-13 (DB7-DB0): 8-bit bi-directional data bus for display or instruction data.
Pin 14 (R/W): Read/Write control signal.
Pin 15 (A0): Determines data type on DB0-DB7.
Pins 16-18 (E1, E2, E3): Enable access to different sections of the LCD module.
Pins 19-20 (BLA, BLK): LED backlight power supply.

Display Characteristics: The LCD module features an FSTN, negative, transmissive display mode with a 6:00 viewing angle. It uses a 1/32 duty, 1/5 bias driving method and has a green LED backlight.

Mechanical Data: The module's dimensions are 231.0 x 53.6 x 12.5 mm, with a viewing area of 188.0 x 38.0 mm and an active area of 185.8 x 35.8 mm. Dot pitch and size are specified as 0.92 x 1.12 mm and 0.88 x 1.08 mm, respectively.

Absolute Maximum Ratings: The operating voltage ranges from 0 to +7.0V, with an operating temperature range of -20 to +70°C and a storage temperature range of -30 to +80°C.

Electrical Characteristics: The operating voltage is specified between 4.8V and 5.2V, with an operating current ranging from 2.5mA to 7.5mA. Input high and low voltages are also defined.

Backlight Characteristics: The forward voltage for the backlight is 5.0V, with a forward current ranging from 120mA to 150mA.

Block Diagram: The document includes a block diagram illustrating the connections and components of the LM3121B series, highlighting major models and their specifications.

Models: The LM3121B series includes models with different backlight options, such as green and white LED backlights, both operating at 5.0V.

Catalog excerpts

Full Graphics Type LCD Module LM3121B series OUTLINE DRAWING Full Graphics Type LCD Module LM3121B series ELECTRICAL CHARACTERISTICS* BACKLIGHT CHARACTERISTICS

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LM3121 Series

LM3121 Series

Catalog excerpts

All TOPWAY LCD catalogs and technical brochures