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PCF8536AT1 데이터시트(PDF) 35 Page - NXP Semiconductors

부품명 PCF8536AT1
상세설명  Universal LCD driver for low multiplex rates including a 6 channel PWM generator
PDF  74 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8536AT1 데이터시트(HTML) 35 Page - NXP Semiconductors

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PCF8536
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 21 February 2012
35 of 74
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
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,
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
Display RAM addresses (columns)/segment outputs (S)
013aaa454
BP0
BP1
BP2
BP3
BP4
BP5
BP6
BP7
S0 S1 S2 S3 S4
S35 S36 S37 S38 S39
Multiplex 1:8 drive mode
Multiplex 1:6 drive mode
Multiplex 1:4 drive mode
S0 S1 S2 S3 S4
S35 S36 S37 S38 S39 S40 S41
BP0
BP1
BP2
BP3
BP4
BP5
BP0
BP1
BP2
BP3
S0 S1 S2 S3 S4
S35 S36 S37 S38 S39 S40 S41 S42 S43



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