PCF8551
Universal 36 × 4 LCD segment driver
Rev. 3.1 — 3 May 2021 Product data sheet
1 General description
PCF8551 is an ultra low-power LCD segment driver with 4 backplane- and 36 segment-
driver outputs, with either an I
2
C- (PCF8551A) or an SPI-bus (PCF8551B) interface.
It comprises an internal oscillator, bias generation, instruction decoding, and display
controller.
For a selection of NXP LCD segment drivers, see Table 23.
2 Features and benefits
• Single chip LCD controller and driver with temperature range of -40 °C to 85 °C
• Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
• Selectable display bias configuration: static,
1
⁄
2
, or
1
⁄
3
• Internal LCD bias generation with buffers
• 36 segment drives:
– Up to 18 7-segment numeric characters
– Up to 9 14-segment alphanumeric characters
– Any graphics of up to 144 segments/elements
• Auto-incrementing display data and instruction loading
• Versatile blinking modes
• Independent supplies of V
LCD
and V
DD
• Power supply ranges:
– 1.8 V to 5.5 V for V
LCD
– 1.8 V to 5.5 V for V
DD
• Ultra low-power consumption
• 400 kHz I
2
C-bus interface (PCF8551A)
• 5 MHz SPI-bus interface (PCF8551B)
• Internally generated or externally supplied clock signal
3 Applications
• Metering equipment
• Consumer healthcare devices
• Battery operated devices
• Measuring equipment
NXP Semiconductors
PCF8551
Universal 36 × 4 LCD segment driver
4 Ordering information
PackageProduct type Number Topside mark
Name Description Version
PCF8551ATT/A PCF8551A TSSOP48 plastic thin shrink small outline
package; 48 leads; body width 6.1 mm
SOT362-1
PCF8551BTT/A PCF8551B TSSOP48 plastic thin shrink small outline
package; 48 leads; body width 6.1 mm
SOT362-1
Table 1. Ordering Information
4.1 Ordering options
Product type
Number
Orderable part
number
Package Packing method Minimum order
quantity
Temperature
PCF8551ATT/AJ
[1]
TSSOP48 Reel 13” Q1 NDP 2000 T
amb
= -40 °C to
+85 °C
PCF8551ATT/A
PCF8551ATT/AY
[2]
TSSOP48 Reel 13” Q1 DP 2000 T
amb
= -40 °C to
+85 °C
PCF8551BTT/AJ
[1]
TSSOP48 Reel 13” Q1 NDP 2000 T
amb
= -40 °C to
+85 °C
PCF8551BTT/A
PCF8551BTT/AY
[2]
TSSOP48 Reel 13” Q1 DP 2000 T
amb
= -40 °C to
+85 °C
Table 2. Ordering options
[1] Not recommend for new design - will be discontinued in mid 2021 - use new version with improved package.
[2] Improved package - refer to PCN 202005038F01
PCF8551 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
Product data sheet Rev. 3.1 — 3 May 2021
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