pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 38

• Manufacturer Part Number: pcf8536
• Description: Universal Lcd Driver For Low Multiplex Rates Including A 6 Channel Pwm Generator
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8536
Product data sheet
8.9.3 RAM filling in 1:6 multiplex drive mode
In the 1:6 multiplex drive mode the RAM is organized in six rows and 42 columns. The
eight transmitted data bits are placed in such a way, that a column is filled up (see
Figure
The remaining bits are wrapped over into the next column. In order to fill the whole RAM,
31 and a half bytes need to be sent to the PCF8536. After the last byte sent, the data
pointer must be reset before the next RAM content update. Additional data bytes sent and
any data bits that spill over the RAM will be discarded. Depending on the start address of
the data pointer, there are three possible boundary conditions. See
Fig 23. Display RAM filling order in 1:6 multiplex drive mode
backplane outputs
Display RAM
bits (rows)/
(BP)
23).
Rows
All information provided in this document is subject to legal disclaimers.
0
1
2
3
4
5
Universal LCD low multiplex driver with 6 channel PWM generator
a7
a6
a5
a4
a3
a2
0
Display RAM addresses (columns)/segment outputs (S)
Rev. 1 — 6 October 2011
a1
a0
b7
b6
b5
b4
1
b3
b2
b1
b0
c7
c6
2
c5
c4
c3
c2
c1
c0
3
4
5
6
Columns
7
37 38 39 40 41
MSB
a7
b7
c7
Figure
a6
b6
c6
Transmitted data bytes
PCF8536
© NXP B.V. 2011. All rights reserved.
a5
b5
c5
a4
b4
c4
24.
a3
b3
c3
a2
b2
c2
013aaa457
a1
b1
c1
38 of 74
LSB
a0
b0
c0