PCF8578TD NXP Semiconductors, PCF8578TD Datasheet - Page 3

• Manufacturer Part Number: PCF8578TD
• Description: LCD Drivers LCD DRVR DOT MATRIX
• Manufacturer: NXP Semiconductors

Specifications of PCF8578TD

• Number Of Digits: 32
• Number Of Segments: 384
• Maximum Clock Frequency: 3.3 KHz
• Operating Supply Voltage: 2.5 V to 6 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 150 C
• Package / Case: VSO-56
• Maximum Supply Current: 50 uA
• Minimum Operating Temperature: - 65 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCF8578T/1,112

NXP Semiconductors
6. Block diagram
PCF8578_6
Product data sheet
TEST
Fig 1.
V
SDA
V
SCL
LCD
DD
V
V
V
V
2
3
4
5
(1) Operates at LCD voltage levels, all other blocks operate at logic levels.
Block diagram
POWER-ON
RESET
n.c.
FILTERS
INPUT
n.c.
SUBADDRESS
COUNTER
CONTROLLER
CONTROLLER
I
DISPLAY
2
C-BUS
MODE
SA0
AND SENSING
Y DECODER
AMPLIFIERS
Rev. 06 — 5 May 2009
RAM DATA POINTER
Y
LCD row/column driver for dot matrix graphic displays
COMMAND
DECODER
ROW/COLUMN
R31/C31 - R8/C8
DISPLAY RAM
CONTROLLER
X DECODER
32
DRIVERS
C39 - C32
OUTPUT
R7 - R0
X
40-BIT
(1)
DECODER
DISPLAY
PCF8578
GENERATOR
OSCILLATOR
TIMING
PCF8578
© NXP B.V. 2009. All rights reserved.
msa842
R ext(OSC)
SYNC
CLK
3 of 46
V
OSC
SS