PCF8536AT datasheet(29/54 Pages) NXP

29 / 54 page

PCA85276

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

Product data sheet

Rev. 3 — 12 November 2018

29 of 54

NXP Semiconductors

PCA85276

Automotive 40 x 4 LCD driver

After an acknowledgement, one or more command bytes follow that define the status of

each addressed PCA85276.

The last command byte sent is identified by resetting its most significant bit, continuation

bit C (see Figure 21). The command bytes are also acknowledged by all addressed

PCA85276 on the bus.

After the last command byte, one or more display data bytes may follow. Display data

bytes are stored in the display RAM at the address specified by the data pointer and the

subaddress counter. Both data pointer and subaddress counter are automatically updated

and the data directed to the intended PCA85276 device.

An acknowledgement after each byte is asserted only by the PCA85276 that are

addressed via address lines A0 and A1. After the last display byte, the I2C-bus master

asserts a STOP condition (P). Alternately a START may be asserted to restart an I2C-bus

access.

Fig 20. I2C-bus protocol

Fig 21. Format of command byte

PCF8536AT Datasheet(PDF) 29 Page - NXP Semiconductors