PCF8536AT/1 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

PCF8536AT/1

Universal LCD driver for low multiplex rates including a 6 channel PWM generator

NXP Semiconductors. 

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NXP Semiconductors

PCF8536

Universal LCD low multiplex driver with 6 channel PWM generator

8.9 Display RAM

The display RAM stores the LCD data. Depending on the multiplex drive mode, the

arrangement of the RAM is changed.

• multiplex drive 1:8: RAM is 40  8 bit

• multiplex drive 1:6: RAM is 42  6 bit

• multiplex drive 1:4: RAM is 44  4 bit

Display RAM addresses (columns)/segment outputs (S)

Multiplex 1:8 drive mode S0 S1 S2 S3 S4

BP0

BP1

BP2

BP3

BP4

BP5

BP6

BP7

S35 S36 S37 S38 S39

Multiplex 1:6 drive mode

S0 S1 S2 S3 S4

BP0

BP1

BP2

BP3

BP4

BP5

S35 S36 S37 S38 S39 S40 S41

PCF8536

Product data sheet

Multiplex 1:4 drive mode

BP0

BP1

S0 S1 S2 S3 S4

BP2

BP3

S35 S36 S37 S38 S39 S40 S41 S42 S43

013aaa454

The display RAM bitmap shows the direct relationship between the display RAM column and the

segment outputs and between the bits in a RAM row and the backplane outputs.

Fig 20. Display RAM bitmap

Logic 1 in the RAM bit map indicates the on-state (Von(RMS)) of the corresponding LCD

element; similarly, logic 0 indicates the off-state (Voff(RMS)). For more information on

Von(RMS) and Voff(RMS), see Section 8.4.

There is a one-to-one correspondence between

• the bits in the RAM bitmap and the LCD elements,

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 6 October 2011

© NXP B.V. 2011. All rights reserved.

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