pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 50

• 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
9.2.8.1 Status read out
Status read out for I
fixed value plus the slave address bit A0 from the PCF8536. This read out function will
allow the I
Table 38.
If a readout is made, the R/W bit must be logic 1 and then the next data byte following is
provided by the PCF8536 as shown in
In the unlikely case that the chip has entered the internal test mode, detection of this state
is possible by using the modified status read out detailed in
is modified to indicate that the chip has entered an internal test mode.
Table 39.
EMC detection:
possible to cover all cases. To detect if a severe EMC event has occurred, it is possible to
check the responsiveness of the device by reading its register.
Bit
7 to 1
0
Bit
7 to 1
0
Fig 37. I
(1) From PCF8536.
Symbol
-
A0
Symbol
-
A0
2
2
Status read out value
C-bus protocol read mode
Modified status read out value
C master to confirm the existence of the device on the I
All information provided in this document is subject to legal disclaimers.
The PCF8536 is ruggedized against EMC susceptibility; however it is not
Universal LCD low multiplex driver with 6 channel PWM generator
2
C-bus operation only. This command will initiate the read out of a
Rev. 1 — 6 October 2011
S 0 1 1 1 0
slave address
Value
0101010
0
1
Value
1111000
0
1
0
acknowledge
R/W = 1
A
0
Figure
1
A
0
1
Description
fixed value
read back value is 01010100
read back value is 01010101
Description
fixed value
read back value is 1111 0000
read back value is 1111 0001
37.
readout byte
0
(1)
1
0
1
0
acknowledge
from master
A
0
013aaa463
A P
Table
39. The read out value
2
C-bus.
PCF8536
© NXP B.V. 2011. All rights reserved.
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