PCF8531U NXP [NXP Semiconductors], PCF8531U Datasheet - Page 29

• Manufacturer Part Number: PCF8531U
• Description: 34 x 128 pixel matrix driver
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF8531_4
Product data sheet
11.3 Command decoder
The command decoder identifies command words that arrive on the I
significant bit of a control byte is the continuation bit Co. If this bit is logic 1, it indicates
that only one data byte (either command or RAM data) will follow. If this bit is logic 0, it
indicates that a series of data bytes (either command or RAM data) may follow. The DB6
bit of a control byte is the RAM data/command bit RS. When this bit is at logic 1, it
indicates that another RAM data byte will be transferred next. If the bit is at logic 0, it
indicates that another command byte will be transferred next.
•
•
Pairs of bytes; information in the second byte, the first byte determines whether
information is display or instruction data
Stream of information bytes after Co = 0; display or instruction data, depending on
last RS (Register Selection).
Rev. 04 — 13 June 2008
34 x 128 pixel matrix driver
2
C-bus. The most
PCF8531
© NXP B.V. 2008. All rights reserved.
29 of 44