PCA9550D,112 NXP Semiconductors, PCA9550D,112 Datasheet - Page 10

• Manufacturer Part Number: PCA9550D,112
• Description: IC LED DRIVER BLINKER 8-SOIC
• Manufacturer: NXP Semiconductors
• Type: LED Blinkerr

Specifications of PCA9550D,112

• Package / Case: 8-SOIC (3.9mm Width)
• Topology: Open Drain, PWM
• Number Of Outputs: 2
• Internal Driver: Yes
• Type - Primary: LED Blinker
• Frequency: 400kHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: OM6285 - EVAL BOARD I2C-2002-1A568-4002 - DEMO BOARD I2C
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-1046-5; 935272882112; PCA9550D

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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