PCA9550D NXP Semiconductors, PCA9550D Datasheet - Page 10

• Manufacturer Part Number: PCA9550D
• Description: LED Drivers 2-BIT I2C FM OD LED BLK RST
• Manufacturer: NXP Semiconductors

Specifications of PCA9550D

• Number Of Segments: 2
• Low Level Output Current: 24000 uA (Min)
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 500 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-96
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9550D,112

NXP Semiconductors
PCA9550_5
Product data sheet
Fig 11. Write to register
Fig 12. Read from register
Fig 13. Read input port register
data into
SDA
read from
(cont.)
SDA
write to register
data out from port
port
Remark: This figure assumes the command byte has previously been programmed with 00h.
SCL
SDA
port
S
START condition
S
START condition
S
(repeated)
START condition
1
1
1
S
START condition
7.4 Bus transactions
1
1
2
1
slave address
1
1
slave address
0
slave address
3
0
1
0
slave address
0
4
0
0
0
DATA 1
0
5
0
0
0
0 A0 0
acknowledge
6
0 A0
0
0 A0
from slave
acknowledge
7
R/W
from slave
0 A0 1
R/W
R/W
8
0
t
h(D)
1
R/W
A
9
A
acknowledge
from slave
A
0
A
0
acknowledge
from slave
0
DATA 2
Rev. 05 — 13 October 2008
0
at this moment master-transmitter becomes master-receiver
and slave-receiver becomes slave-transmitter
command byte
0
data from register
command byte
DATA (first byte)
0
Auto-Increment
register address
if AI = 1
AI
AI
data from port
0 B2 B1
DATA 1
2-bit I
DATA 3
0 B2 B1 B0
acknowledge
from slave
2
C-bus LED driver with programmable blink rates
B0
t
A
su(D)
A
acknowledge
from slave
A
acknowledge
from master
(cont.)
A
acknowledge
from master
data to register
DATA 4
DATA 1
data from port
data from register
DATA (last byte)
DATA 4
t
no acknowledge
v(Q)
from master
A
acknowledge
from slave
PCA9550
NA
© NXP B.V. 2008. All rights reserved.
DATA 1 VALID
no acknowledge
from master
NA
002aad270
002aad268
P
STOP
condition
002aad269
P
STOP
condition
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