PCF8576C
Universal LCD driver for low multiplex rates
Rev. 09 — 9 July 2009
Product data sheet
1. General description
The PCF8576C is a peripheral device which interfaces to almost any Liquid Crystal
Display (LCD)
1
with low multiplex rates. It generates the drive signals for any static or
multiplexed LCD containing up to four backplanes and up to 40 segments and can easily
be cascaded for larger LCD applications. The PCF8576C is compatible with most
microprocessors or microcontrollers and communicates via a two-line bidirectional
I
2
C-bus. Communication overheads are minimized by a display RAM with
auto-incremented addressing, by hardware subaddressing.
2. Features
I
Single-chip LCD controller and driver
I
40 segment drives:
N
Up to twenty 7-segment numeric characters
N
Up to ten 14-segment alphanumeric characters
N
Any graphics of up to 160 elements
I
Versatile blinking modes
I
No external components required (even in multiple device applications)
I
Selectable backplane drive configuration: static or 2, 3, 4 backplane multiplexing
I
Selectable display bias configuration: static,
1
⁄
2
or
1
⁄
3
I
Internal LCD bias generation with voltage-follower buffers
I
40
×
4-bit RAM for display data storage
I
Auto-incremented display data loading across device subaddress boundaries
I
Display memory bank switching in static and duplex drive modes
I
Wide logic LCD supply range:
N
From 2 V for low-threshold LCDs
N
Up to 6 V for guest-host LCDs and high-threshold twisted nematic LCDs
I
Low power consumption
I
May be cascaded for large LCD applications (up to 2560 segments possible)
I
Cascadable with 24-segment LCD driver PCF8566
I
No external components
I
Compatible with chip-on-glass technology
I
Separate or combined LCD and logic supplies
I
Optimized pinning for plane wiring in both and multiple PCF8576C applications
I
Power-saving mode for extremely low power consumption in battery-operated and
telephone applications
1.
The definition of the abbreviations and acronyms used in this data sheet can be found in
Section 19.
NXP Semiconductors
PCF8576C
Universal LCD driver for low multiplex rates
3. Ordering information
Table 1.
Ordering information
Package
Name
PCF8576CH
PCF8576CT
PCF8576CTT
LQFP64
VSO56
HTSSOP56
Description
plastic low profile quad flat package;
64 leads; body 10
×
10
×
1.4 mm
plastic very small outline package, 56 leads
Version
SOT314-2
SOT190-1
Type number
plastic thermal enhanced thin shrink small outline package, 56 leads; SOT793-1
body width 6.1 mm; exposed die pad
PCF8576CU/10
PCF8576CU
PCF8576CU/2
wire bond die; 56 bonding pads; 3.0
×
2.82
×
0.38 mm
[2]
bare die; 56 bumps; 3.0
×
2.82
×
0.40 mm
[2]
PCF8576CU/10 PCF8576CU/10 wire bond die; 56 bonding pads; 3.0
×
2.82
×
0.38 mm
[1]
PCF8576CU
PCF8576CU/2
[1]
[2]
PCF8576CU
PCF8576CU/2
Delivery form: chip on FFC.
Delivery form: chip in tray.
4. Marking
Table 2.
Marking codes
Marking code
PCF8576CH
PCF8576CT
PCF8576CTT
PC8576C-1
PC8576C-1
PC8576C-2
Type number
PCF8576CH
PCF8576CT
PCF8576CTT
PCF8576CU/10
PCF8576CU
PCF8576CU/2
PCF8576C_9
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 09 — 9 July 2009
2 of 56
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