PCA8551 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 2 — 24 March 2015 31 of 57
NXP Semiconductors
PCA8551
Automotive 36 × 4 LCD segment driver
CE set LOW
R/W = 0 and register address
write data
write data
:
write data
CE set HIGH
11.2.1.2 Read protocol
When reading the PCA8551B, reading starts at the defined position of the address
pointer. After setting the address pointer, the read can be executed. After each read, the
address pointer increments by one. After address 17h, the address pointer stops
incrementing at 18h.
CE set LOW
R/W = 1 and register address
read data
read data
:
CE set HIGH
Data transfers are terminated by de-asserting CE (set CE to logic 1).
Fig 21. SPI-bus write example: writing two data bytes to registers 00h and 01h
DDD
UHJLVWHUGDWD UHJLVWHUGDWD$3>@5: GHIDXOW
6&/
6',2
&(
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Data transfers are terminated by de-asserting CE (set CE to logic 1).
Fig 22. SPI-bus read example: reading two data bytes from registers 04h and 05h
DDD
GLVSOD\GDWD GLVSOD\GDWD$3>@5: GHIDXOW
6&/
6',2
&
(
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
PCA8551 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 2 — 24 March 2015 32 of 57
NXP Semiconductors
PCA8551
Automotive 36 × 4 LCD segment driver
11.3 EMC detection
The PCA8551 is ruggedized against EMC susceptibility; however it is not possible to
cover all cases. To detect if a severe EMC event has occurred, it is possible to check the
responsiveness of the device by reading its registers.
12. Internal circuitry
13. Safety notes
Fig 23. Device protection diagram
9
66
6&/6'$&(
9
''
9
66
567
9
''
325(6',2&/.
9
66
9
66
9
/&'
&20WR
&20
6(*WR
6(*
DDD
CAUTION
This device is sensitive to ElectroStatic Discharge (ESD). Observe precautions for handling
electrostatic sensitive devices.
Such precautions are described in the ANSI/ESD S20.20, IEC/ST 61340-5, JESD625-A or
equivalent standards.
CAUTION
Static voltages across the liquid crystal display can build up when the LCD supply voltage
(V
LCD
) is on while the IC supply voltage (V
DD
) is off, or vice versa. This may cause unwanted
display artifacts. To avoid such artifacts, V
LCD
and V
DD
must be applied or removed together.
PCA8551 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 2 — 24 March 2015 33 of 57
NXP Semiconductors
PCA8551
Automotive 36 × 4 LCD segment driver
14. Limiting values
[1] Pass level; Human Body Model (HBM), according to Ref. 7 “JESD22-A114.
[2] Pass level; Charged-Device Model (CDM), according to Ref. 8 “
JESD22-C101.
[3] Pass level; latch-up testing according to Ref. 9 “
JESD78 at maximum ambient temperature (T
amb(max)
).
[4] According to the store and transport requirements (see Ref. 13 “
UM10569) the devices have to be stored at a temperature of +8 C to
+45 C and a humidity of 25 % to 75 %.
Table 17. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
V
DD
supply voltage 0.5 +6.5 V
V
LCD
LCD supply voltage 0.5 +6.5 V
V
I
input voltage 0.5 +6.5 V
V
O
output voltage 0.5 +6.5 V
I
I
input current 10 +10 mA
I
O
output current 10 +10 mA
I
DD
supply current 50 +50 mA
I
DD(LCD)
LCD supply current 50 +50 mA
I
SS
ground supply current 50 +50 mA
P
tot
total power dissipation - 100 mW
P
o
output power - 100 mW
V
ESD
electrostatic discharge
voltage
HBM
[1]
on pins SCL, SDA, CE - 2000 V
on all other pins - 3500 V
CDM
[2]
on corner pins - 750 V
on all other pins - 500 V
I
lu
latch-up current
[3]
-200mA
T
stg
storage temperature
[4]
55 +150 C
T
amb
ambient temperature operating device 40 +105 C

PCA8551ATT/AJ

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
Flip Flops Automotive 36X4 LCD segment driver
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet