PCF8553
40 × 4 LCD segment driver
Rev. 3 — 27 March 2015
Product data sheet
1. General description
PCF8553 is an ultra low-power LCD segment driver with 4 backplane- and 40
segment-driver outputs, with either an I
2
C- or an SPI-bus interface. It comprises an
internal oscillator, bias generation, instruction decoding, and display controller.
For a selection of NXP LCD segment drivers, see
Table 24 on page 45.
2. Features and benefits
Single chip LCD controller and driver
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
40 segment drives:
Up to 20 7-segment numeric characters
Up to 10 14-segment alphanumeric characters
Any graphics of up to 160 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
5 MHz SPI-bus interface
Internally generated or externally supplied clock signal
3. Applications
Metering equipment
Small appliances
Consumer healthcare devices
Battery operated devices
Measuring equipment
NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
4. Ordering information
Table 1.
Ordering information
Package
Name
PCF8553DTT
TSSOP56
Description
plastic thin shrink small outline package;
56 leads; body width 6.1 mm
Version
SOT364-1
Type number
4.1 Ordering options
Table 2.
Ordering options
Orderable part number Sales item
(12NC)
PCF8553DTT/AJ
935304762118
Delivery form
tape and reel, 13 inch
IC
revision
1
Product type number
PCF8553DTT/A
5. Marking
Table 3.
Marking codes
Marking code
PCF8553D
Type number
PCF8553DTT/A
PCF8553
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 3 — 27 March 2015
2 of 55
NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
6. Block diagram
Fig 1.
Block diagram of PCF8553
PCF8553
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 3 — 27 March 2015
3 of 55
NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
7. Pinning information
7.1 Pinning
Fig 2.
Pin configuration of PCF8553DTT (TSSOP56)
PCF8553
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 3 — 27 March 2015
4 of 55
NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
7.2 Pin description
Table 4.
Pin description of PCF8553DTT (TSSOP56)
Input or input/output pins must always be at a defined level (V
SS
or V
DD
) unless otherwise specified.
Symbol
Pin
Type
output
output
supply
supply
supply
input
input
Description
LCD segments
LCD backplanes
LCD supply voltage
supply voltage
ground supply
reset input, active LOW
Power-On Reset (POR) enable
Backplane and segment outputs
SEG34 to SEG39 1 to 6
SEG0 to SEG33
COM0 to COM3
Supply pins
VLCD
VDD
VSS
RST
PORE
[1]
11
12
14
15
21
23 to 56
7 to 10
Clock and control pins
•
•
CLK
Bus-related pins
IFS
[1]
SDIO
A0
[1]
A1
[1]
13
16
17
22
input
18
connect to V
DD
for enabling POR
connect to V
SS
(or leave open) for disabling POR
must be left open if unused
SPI-bus
input/output internal oscillator output, external oscillator input
•
I
2
C-bus
interface selector input
•
input
input
connect to V
SS
(or leave open)
•
connect to V
DD
input/output unused
hardware device address selection;
serial data input/output
unused
•
•
connect to V
SS
(or leave open) for
logic 0
connect to V
DD
for logic 1
serial clock input
chip enable input, active LOW
SCL
SDA/CE
[1]
19
20
input
serial clock input
input/output serial data output
A series resistance between V
DD
and the pin must not exceed 1 k to ensure proper functionality, see
Section 16.3.
PCF8553
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 3 — 27 March 2015
5 of 55
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