PCF8548 Datasheet PDF - Philips Electronics

GENERAL DESCRIPTION
The PCF8548 is a low power CMOS LCD controller driver, designed to drive a graphic display of 65 rows and 102 columns. All necessary functions for the display are provided in a single chip, including on-chip generation of LCD supply and bias voltages, resulting in a minimum of external components and low power consumption. The PCF8548 interfaces to most microcontrollers via an I2C-bus interface.

FEATURES
• Single-chip LCD controller/driver
• 65 row and 102 column outputs
• Display data RAM 65 × 102 bits
• On-chip:
   – Configurable 5 (4, 3 and 2) × voltage multiplier generating VLCD (external VLCD also possible)
   – Generation of intermediate LCD bias voltages
   – Oscillator requires no external components (external clock also possible).
• 400 kbits/s fast I2C-bus interface
• CMOS compatible inputs
• Mux rate: 1 : 65
• Logic supply voltage range VDD1 to VSS:
   – 1.9 to 5.5 V.
• High voltage generator supply voltage range VDD2 to VSS and VDD3 to VSS:
   – 2.4 to 4.5 V with LCD voltage internally generated (voltage generator enabled).
• Display supply voltage range VLCD to VSS:
   – 4.5 to 9.0 V
• Low power consumption, suitable for battery operated systems
• Temperature compensation of VLCD
• Slim chip layout, suitable for Chip-On-Glass (COG) applications
• Programmable bottom row pads mirroring and top row pads mirroring, for compatibility with both Tape Carrier Package (TCP) and COG applications.

APPLICATIONS
• Telecom equipment
• Portable instruments
• Point of sale terminals.