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PCF8579 Datasheet(PDF) 3 Page - NXP Semiconductors |
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PCF8579 Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 40 page 1997 Apr 01 3 Philips Semiconductors Product specification LCD column driver for dot matrix graphic displays PCF8579 1 FEATURES • LCD column driver • Used in conjunction with the PCF8578, this device forms part of a chip set capable of driving up to 40960 dots • 40 column outputs • Selectable multiplex rates; 1 : 8, 1 : 16, 1 : 24 or 1 : 32 • Externally selectable bias configuration, 5 or 6 levels • Easily cascadable for large applications (up to 32 devices) • 1280-bit RAM for display data storage • Display memory bank switching • Auto-incremented data loading across hardware subaddress boundaries (with PCF8578) • Power-on reset blanks display • Logic voltage supply range 2.5 to 6 V • Maximum LCD supply voltage 9 V • Low power consumption • I2C-bus interface • TTL/CMOS compatible • Compatible with most microcontrollers • Optimized pinning for single plane wiring in multiple device applications (with PCF8578) • Space saving 56-lead plastic mini-pack and 64-pin plastic low profile quad flat package • Compatible with chip-on-glass technology • I2C-bus address: 011110 SA0. 2 APPLICATIONS • Automotive information systems • Telecommunication systems • Point-of-sale terminals • Computer terminals • Instrumentation. 3 GENERAL DESCRIPTION The PCF8579 is a low power CMOS LCD column driver, designed to drive dot matrix graphic displays at multiplex rates of 1 : 8, 1 : 16, 1 : 24 or 1 : 32. The device has 40 outputs and can drive 32 × 40 dots in a 32 row multiplexed LCD. Up to 16 PCF8579s can be cascaded and up to 32 devices may be used on the same I2C-bus (using the two slave addresses). The device is optimized for use with the PCF8578 LCD row/column driver. Together these two devices form a general purpose LCD dot matrix driver chip set, capable of driving displays of up to 40960 dots. The PCF8579 is compatible with most microcontrollers and communicates via a two-line bidirectional bus (I2C-bus). To allow partial VDD shutdown the ESD protection system of the SCL and SDA pins does not use a diode connected to VDD. Communication overheads are minimized by a display RAM with auto-incremented addressing and display bank switching. 4 ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION PCF8579T VSO56 plastic very small outline package; 56 leads SOT190 PCF8579U7 − chip with bumps on tape − PCF8579H LQFP64 plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm SOT314-2 |
Similar Part No. - PCF8579 |
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Similar Description - PCF8579 |
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