PCF8576DT/2,118 NXP Semiconductors, PCF8576DT/2,118 Datasheet - Page 19

• Manufacturer Part Number: PCF8576DT/2,118
• Description: IC LCD DRIVER 40/160SEG 56TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8576DT/2,118

• Package / Case: 56-TSSOP
• Display Type: LCD
• Configuration: 40 Segment
• Interface: I²C
• Current - Supply: 24µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 20
• Number Of Segments: 160
• Maximum Clock Frequency: 400 KHz
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4703 - DEMO BOARD LCD GRAPHIC DRIVER
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-3558-2; 935276166118; PCF8576DT/2-T

NXP Semiconductors
PCF8576D
Product data sheet
7.12 Subaddress counter
7.11 Data pointer
The following applies to
The addressing mechanism for the display RAM is realized using the data pointer.
This allows the loading of an individual display data byte, or a series of display data bytes,
into any location of the display RAM. The sequence commences with the initialization of
the data pointer by the load-data-pointer command (see
Following this command, an arriving data byte is stored at the display RAM address
indicated by the data pointer. The filling order is shown in
After each byte is stored, the content of the data pointer is automatically incremented by a
value dependent on the selected LCD drive mode:
After each byte is stored, the contents of the data pointer is automatically incremented by
a value dependent on the selected LCD drive mode:
If an I
The data pointer should be re-written prior to further RAM accesses.
The storage of display data is determined by the contents of the subaddress counter.
Storage is allowed to take place only when the contents of the subaddress counter match
with the hardware subaddress applied to A0, A1 and A2. The subaddress counter value is
defined by the device-select command (see
subaddress counter and the hardware subaddress do not match then data storage is
inhibited but the data pointer is incremented as if data storage had taken place. The
subaddress counter is also incremented when the data pointer overflows.
•
•
•
•
•
•
•
•
In the static drive mode, the eight transmitted data bits are placed in row 0 of eight
successive 4-bit RAM words.
In the 1:2 multiplex mode, the eight transmitted data bits are placed in pairs into
row 0 and 1 of four successive 4-bit RAM words.
In the 1:3 multiplex mode, the eight bits are placed in triples into row 0, 1 and 2 to
three successive 4-bit RAM words, with bit 3 of the third address left unchanged. It is
not recommended to use this bit in a display because of the difficult addressing. This
last bit may, if necessary, be controlled by an additional transfer to this address but
care should be taken to avoid overwriting adjacent data because always full bytes are
transmitted.
In the 1:4 multiplex mode, the eight transmitted data bits are placed in quadruples into
row 0, 1, 2 and 3 of two successive 4-bit RAM words.
In static drive mode by eight
In 1:2 multiplex drive mode by four
In 1:3 multiplex drive mode by three
In 1:4 multiplex drive mode by two
2
C-bus data access is terminated early then the state of the data pointer is unknown.
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 14 February 2011
Figure
12:
Universal LCD driver for low multiplex rates
Section
7.17). If the contents of the
Section
Figure
7.17).
12.
PCF8576D
© NXP B.V. 2011. All rights reserved.
19 of 50