PCF8578T/1 NXP Semiconductors, PCF8578T/1 Datasheet - Page 3

• Manufacturer Part Number: PCF8578T/1
• Description: IC, LCD DRIVER, ROW/COLUMN, 56VSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8578T/1

• Supply Current: 20µA
• No. Of Digits / Alpha: 36
• Meter Display Type: LCD
• Supply Voltage Range: 2.5V To 6V
• Driver Case Style: VSOP
• No. Of Pins: 56
• Operating Temperature Range: -40°C To +85°C
• Base: RoHS Compliant
• No. Of Segments: 384
• Interface Type: I2C
• Rohs Compliant: Yes

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