Overview
The PCF8579HT/1,518 is a low power CMOS LCD column driver designed by NXP USA Inc. This device is specifically engineered to drive dot matrix graphic displays at various multiplex rates, including 1:8, 1:16, 1:24, or 1:32. It is optimized for use in conjunction with the PCF8578 LCD row/column driver, forming a comprehensive chip set capable of driving displays of up to 40960 dots. The PCF8579HT/1,518 is compatible with most microcontrollers and communicates via a two-line bidirectional I²C-bus interface.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | TQFP64: plastic thin quad flat package; 64 leads; body 10 x 10 x 1.0 mm |
| Number of Column Outputs | 40 |
| Multiplex Rates | 1:8, 1:16, 1:24, or 1:32 |
| Display RAM | 1280-bit static RAM, divided into 4 banks of 40 bytes |
| Logic Voltage Supply Range | 2.5 V to 6 V |
| Maximum LCD Supply Voltage | 9 V |
| I²C-bus Interface | Two-line bidirectional bus |
| Cascading Capability | Up to 16 devices can be cascaded, up to 32 devices on the same I²C-bus |
Key Features
- Low power consumption
- 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)
- Display memory bank switching and auto-incremented data loading across hardware subaddress boundaries
- Power-On Reset (POR) blanks display
- Optimized pinning for single plane wiring in multiple device applications
Applications
- Automotive information systems
- Telecommunication systems
- Point-of-sale terminals
- Industrial computer terminals
- Instrumentation
Q & A
- What is the PCF8579HT/1,518 used for? The PCF8579HT/1,518 is used as an LCD column driver to drive dot matrix graphic displays at various multiplex rates.
- What are the multiplex rates supported by the PCF8579HT/1,518? The device supports multiplex rates of 1:8, 1:16, 1:24, or 1:32.
- How many column outputs does the PCF8579HT/1,518 have? The device has 40 column outputs.
- What type of interface does the PCF8579HT/1,518 use for communication? The device communicates via a two-line bidirectional I²C-bus interface.
- Can the PCF8579HT/1,518 be cascaded with other devices? Yes, up to 16 PCF8579HT/1,518 devices can be cascaded, and up to 32 devices can be used on the same I²C-bus.
- What is the logic voltage supply range for the PCF8579HT/1,518? The logic voltage supply range is from 2.5 V to 6 V.
- What is the maximum LCD supply voltage for the PCF8579HT/1,518? The maximum LCD supply voltage is 9 V.
- Does the PCF8579HT/1,518 support display memory bank switching? Yes, the device supports display memory bank switching and auto-incremented data loading.
- What type of package does the PCF8579HT/1,518 come in? The device comes in a TQFP64 package: a plastic thin quad flat package with 64 leads and a body size of 10 x 10 x 1.0 mm.
- What are some common applications of the PCF8579HT/1,518? Common applications include automotive information systems, telecommunication systems, point-of-sale terminals, industrial computer terminals, and instrumentation.
