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PCF8578T/1,118

  • PCF8578T/1,118

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PCF8578T/1,118 Overview

The PCF8578 is a low power CMOS LCD row and column driver, designed to drivedot matrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The devicehas 40 outputs, of which 24 are programmable and configurable for the following ratiosof rows/columns: 32/8, 24/16, 16/24 or 8/32. The PCF8578 can function as a stand-aloneLCD controller and driver for use in small systems. For larger systems it can be used inconjunction with up to 32 PCF8579s for which it has been optimized. Together these twodevices form a general purpose LCD dot matrix driver chip set, capable of drivingdisplays of up to 40960 dots. The PCF8578 is compatible with most microcontrollers andcommunicates via a two-line bidirectional bus (I2C-bus). Communication overhead isminimized by a display RAM with auto-incremented addressing and display bankswitching.
pcf8578t-1-118-1 pcf8578t-1-118-2

Features

  • Single chip LCD controller and driver
  • Stand-alone or may be used with up to 32 PCF8579s (40960 dots possible)
  • 40 driver outputs, configurable for several ratios of rows/columns: 32/8, 24/16, 16/24 or 8/32
  • Selectable multiplex rates: 1:8, 1:16, 1:24 or 1:32
  • Externally selectable bias configuration, 5 or 6 levels
  • 1280-bit RAM for display data storage and scratch pad
  • Display memory bank switching
  • Auto-incremented data loading across hardware subaddress boundaries (with PCF8579)
  • Provides display synchronization for PCF8579
  • On-chip oscillator, requires only 1 external resistor
  • Power-On Reset (POR) blanks display
  • Logic voltage supply range 2.5 V to 6 V
  • Maximum LCD supply voltage 9 V
  • Low power consumption
  • I2C-bus interface
  • Compatible with most microcontrollers
  • Optimized pinning for single plane wiring in multiple device applications (with PCF8579)
  • Space saving 56-lead small outline package and 64 pin quad flat pack
  • Target Applications
  • Automotive information systems
  • Telecommunication systems
  • Point-of-sale terminals
  • Industrial computer terminals
  • Instrumentation

Product Parameters

  • LCD graphic driver display rows

    8,16,24,32

  • LCD graphic driver display format

    8x32 or 16x24 stand alone; up to 40960 dots with 32 PCF8579

  • VDD1 [min] (V)

    2.5

  • VLCD [min] (V)

    3.5

  • ffr

    64.0

  • LCD graphic driver display columns

    32,24,16,8

  • I2C-bus

    Y

  • VDD1 [max] (V)

    6

  • VLCD [max] (V)

    9

Technical Documents

  • Footprint for wave solderingDetails>>

  • VSO56; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Details>>

  • TQFP64; Reel dry pack, SMD, 13" Q1/T1 standard product orientation Orderable part number ending, 518 or Y Ordering code (12NC) ending 518Details>>

  • plastic very small outline package; 56 leadsDetails>>

  • plastic thin quad flat package; 64 leads; body 10 x 10 x 1.0 mmDetails>>

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