PCF8811: 80 x 128 pixels matrix LCD driver

Overview

The PCF8811 is a low-power CMOS LCD controller and driver. It is designed to drive a graphic display of 80 rows and 128 columns or of 79 rows, 128 columns, and an icon row of 128 symbols. All necessary functions for the display are provided in a single chip, including on-chip generation of the LCD supply and bias voltages. Therefore only a minimum of external components are required and power consumption is low. The PCF8811 can interface microcontrollers via a parallel bus, serial bus, or I²C-bus interface.

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Features

Single-chip LCD controller and driver
80 row and 128 column outputs
Display data RAM 80 × 128 bit
128 icons (in extended command set row 79 can be configured for displaying icons)
Low power consumption; suitable for battery operated systems
Interfaces:
- 8-bit parallel
- 3- or 4-line Serial Peripheral Interface (SPI)
- High-speed I²C-bus
Configurable voltage multiplier generating LCD supply voltage V_LCD; an external V_LCD is also possible
Linear temperature compensation of V_LCD:
- 8 programmable temperature coefficients (extended command set)
- one fixed temperature coefficient which can be set as default by OTP programming (basic command set)
Generation of intermediate LCD bias voltage
Oscillator requires no external components
OTP calibration for V_LCD and accurate frame frequency
External reset input pin
External clock input possible
Multiplex rate 1:16 to 1:80 selectable
- in steps of 8 when icon row is not used
- in steps of 16 when the icon row is used
Logic supply voltage range V_DD1 to V_SS:
- 1.7 V to 3.3 V
High-voltage multiplier supply voltage range V_DD2, V_DD3 to V_SS:
- 1.8 V to 3.3 V
Display supply voltage range V_LCD to V_SS:
- 3 V to 9 V
Programmable bottom row pins mirroring; for compatibility with both Tape Carrier Packages (TCP) and Chip-On-Glass (COG) applications (extended command set)
Status read, which allows for chip recognition and content checking of some registers
Start address line which allows, for instance, the scrolling of the displayed image
Programmable display RAM pointers for variable display sizes
Slim chip layout, suited for COG applications
Temperature range: T_amb = ‑40 °C to +85 °C
CMOS compatible inputs

Target Applications

Automotive displays
Telecommunication equipment
Portable instruments
Point-of-sale terminals
Consumer healthcare devices

MoreLess

Features

Single-chip LCD controller and driver
80 row and 128 column outputs
Display data RAM 80 × 128 bit
128 icons (in extended command set row 79 can be configured for displaying icons)
Low power consumption; suitable for battery operated systems
Interfaces:
- 8-bit parallel
- 3- or 4-line Serial Peripheral Interface (SPI)
- High-speed I²C-bus
Configurable voltage multiplier generating LCD supply voltage V_LCD; an external V_LCD is also possible
Linear temperature compensation of V_LCD:
- 8 programmable temperature coefficients (extended command set)
- one fixed temperature coefficient which can be set as default by OTP programming (basic command set)
Generation of intermediate LCD bias voltage
Oscillator requires no external components
OTP calibration for V_LCD and accurate frame frequency
External reset input pin
External clock input possible
Multiplex rate 1:16 to 1:80 selectable
- in steps of 8 when icon row is not used
- in steps of 16 when the icon row is used
Logic supply voltage range V_DD1 to V_SS:
- 1.7 V to 3.3 V
High-voltage multiplier supply voltage range V_DD2, V_DD3 to V_SS:
- 1.8 V to 3.3 V
Display supply voltage range V_LCD to V_SS:
- 3 V to 9 V
Programmable bottom row pins mirroring; for compatibility with both Tape Carrier Packages (TCP) and Chip-On-Glass (COG) applications (extended command set)
Status read, which allows for chip recognition and content checking of some registers
Start address line which allows, for instance, the scrolling of the displayed image
Programmable display RAM pointers for variable display sizes
Slim chip layout, suited for COG applications
Temperature range: T_amb = ‑40 °C to +85 °C
CMOS compatible inputs

Target Applications

Automotive displays
Telecommunication equipment
Portable instruments
Point-of-sale terminals
Consumer healthcare devices

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