PCF85162T/1,118 NXP Semiconductors, PCF85162T/1,118 Datasheet - Page 15

• Manufacturer Part Number: PCF85162T/1,118
• Description: IC LCD DISPLAY DVR 32SEG 48TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF85162T/1,118

• Package / Case: 48-TSSOP
• Display Type: LCD
• Configuration: 32 Segment
• Interface: I²C
• Digits Or Characters: Any Digit Type
• Current - Supply: 8µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 16
• Number Of Segments: 128
• 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
• Attached Touch Screen: No
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 40 C
• Dc: 1123
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-5059-2

NXP Semiconductors
PCF85162_2
Product data sheet
7.10 Display RAM
The display RAM is a static 32 × 4-bit RAM which stores LCD data. There is a one-to-one
correspondence between
A logic 1 in the RAM bitmap indicates the on-state of the corresponding LCD element;
similarly, a logic 0 indicates the off-state.
The display RAM bit map
backplane outputs BP0 to BP3, and the columns 0 to 31 which correspond with the
segment outputs S0 to S31. In multiplexed LCD applications the segment data of the first,
second, third, and fourth row of the display RAM are time-multiplexed with BP0, BP1,
BP2, and BP3 respectively.
When display data is transmitted to the PCF85162, the display bytes received are stored
in the display RAM in accordance with the selected LCD drive mode. The data is stored as
it arrives and does not wait for an acknowledge cycle as with the commands. Depending
on the current multiplex drive mode, data is stored singularly, in pairs, triples or
quadruples. To illustrate the filling order, an example of a 7-segment numeric display
showing all drive modes is given in
applies equally to other LCD types.
Fig 10. Display RAM bit map
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In the static drive mode the same signal is carried by all four backplane outputs and
they can be connected in parallel for very high drive requirements.
the bits in the RAM bitmap and the LCD elements
the RAM columns and the segment outputs
the RAM rows and the backplane outputs.
display RAM rows/
backplane outputs
The display RAM bit map shows the direct relationship between the display RAM addresses and
the segment outputs and between the bits in a RAM word and the backplane outputs.
rows
(BP)
All information provided in this document is subject to legal disclaimers.
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Rev. 02 — 7 May 2010
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Figure 10
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2
Figure
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shows the rows 0 to 3 which correspond with the
display RAM addresses/segment outputs (S)
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Universal LCD driver for low multiplex rates
11; the RAM filling organization depicted
columns
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PCF85162
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© NXP B.V. 2010. All rights reserved.
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