PHILIPS PCA9552

INTEGRATED CIRCUITS
PCA9552
16-bit I2C LED driver with programmable
blink rates
Product data sheet
Supersedes data of 2003 May 02
Philips
Semiconductors
2004 Oct 01
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with
programmable blink rates
PCA9552
DESCRIPTION
The PCA9552 LED Blinker blinks LEDs in I2C-bus and SMBus
applications where it is necessary to limit bus traffic or free up the
I2C Master’s (MCU, MPU, DSP, chipset, etc.) timer. The uniqueness
of this device is the internal oscillator with two programmable blink
rates. To blink LEDs using normal I/O Expanders like the PCF8574
or PCA9554, the bus master must send repeated commands to turn
the LED on and off. This greatly increases the amount of traffic on
the I2C-bus and uses up one of the master’s timers. The PCA9552
LED Blinker instead requires only the initial set up command to
program BLINK RATE 1 and BLINK RATE 2 (i.e., the frequency and
duty cycle) for each individual output. From then on, only one
command from the bus master is required to turn each individual
open drain output ON, OFF, or to cycle at BLINK RATE 1 or BLINK
RATE 2. Maximum output sink current is 25 mA per bit and 200 mA
per package.
FEATURES
• 16 LED drivers (on, off, flashing at a programmable rate)
• 2 selectable, fully programmable blink rates (frequency and duty
cycle) between 0.172 Hz and 44 Hz (5.82 and 0.023 seconds)
• Input/outputs not used as LED drivers can be used as regular
GPIOs
Any bits not used for controlling the LEDs can be used for General
Purpose Parallel Input/Output (GPIO) expansion.
• Internal oscillator requires no external components
• I2C-bus interface logic compatible with SMBus
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Active-LOW reset input
• 16 open drain outputs directly drive LEDs to 25 mA
• Edge rate control on outputs
• No glitch on power-up
• Supports hot insertion
• Low stand-by current
• Operating power supply voltage range of 2.3 V to 5.5 V
• 0 to 400 kHz clock frequency
• ESD protection exceeds 2000 V HBM per JESD22-A114,
The active-LOW hardware reset pin (RESET) and Power-On Reset
(POR) initializes the registers to their default state, all zeroes,
causing the bits to be set HIGH (LED off).
Three hardware address pins on the PCA9552 allow eight devices
to operate on the same bus.
150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
• Packages offered: SO24, TSSOP24, HVQFN24
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
24-pin plastic SO
–40 °C to +85 °C
PCA9552D
PCA9552D
SOT137-1
24-pin plastic TSSOP
–40 °C to +85 °C
PCA9552PW
PCA9552PW
SOT355-1
24-pin plastic HVQFN
–40 °C to +85 °C
PCA9552BS
9552
SOT616-1
Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.
I2C is a trademark of Philips Semiconductors Corporation.
2004 Oct 01
2
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
22 SCL
LED0
4
LED1
5
LED2
LED3
20 SDA
23 SDA
3
19 SCL
2
A2
21 VDD
A1
22 A0
24 VDD
23 A1
A0 1
PIN CONFIGURATION — HVQFN
24 A2
PIN CONFIGURATION — SO, TSSOP
PCA9552
15 LED13
LED4 5
14 LED12
LED4
8
17 LED12
LED5 6
13 LED11
LED5
9
16 LED11
LED6 10
15 LED10
LED7 11
14 LED9
VSS 12
13 LED8
LED10 12
LED3 4
18 LED13
LED9 11
19 LED14
7
LED8 10
6
9
16 LED14
8
17 LED15
LED2 3
VSS
LED1 2
20 LED15
LED7
21 RESET
7
18 RESET
LED6
LED0 1
TOP VIEW
SW00931
su01668
Figure 1. Pin configuration — SO, TSSOP
Figure 2. Pin configuration — HVQFN
PIN DESCRIPTION
SO, TSSOP
PIN
NUMBER
HVQFN
PIN
NUMBER
SYMBOL
1
22
A0
Address input 0
2
23
A1
Address input 1
FUNCTION
3
24
A2
Address input 2
4, 5, 6, 7, 8, 9,
10, 11
1, 2, 3, 4, 5, 6,
7, 8
LED0–7
LED driver 0–7
12
9
VSS
Supply ground
13, 14, 15, 16,
17, 18, 19, 20
10, 11, 12, 13,
14, 15, 16, 17
LED8–15
21
18
RESET
22
19
SCL
Serial clock line
23
20
SDA
Serial data line
24
21
VDD
Supply voltage
2004 Oct 01
LED driver 8–15
Active-LOW reset input
3
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
BLOCK DIAGRAM
A2
A1
A0
PCA9552
INPUT
REGISTER
SCL
INPUT
FILTERS
I2C-BUS
CONTROL
LED SELECT (LSx)
REGISTER
SDA
0
1
LEDx
VDD
POWER-ON
RESET
RESET
OSCILLATOR
PRESCALER 0
REGISTER
PWM0
REGISTER
BLINK0
PRESCALER 1
REGISTER
PWM1
REGISTER
BLINK1
VSS
NOTE: ONLY ONE I/O SHOWN FOR CLARITY
SW00787
Figure 3. Block diagram
2004 Oct 01
4
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
DEVICE ADDRESSING
PCA9552
Control Register definition
Following a START condition the bus master must output the
address of the slave it is accessing. The address of the PCA9552 is
shown in Figure 4. To conserve power, no internal pull-up resistors
are incorporated on the hardware selectable address pins and they
must be pulled HIGH or LOW.
B3
B2
B1
B0
REGISTER
NAME
TYPE
REGISTER
FUNCTION
0
0
0
0
INPUT0
READ
INPUT
REGISTER 0
0
0
0
1
INPUT1
READ
INPUT
REGISTER 1
A0 R/W
0
0
1
0
PSC0
READ/
WRITE
FREQUENCY
PRESCALER 0
HARDWARE SELECTABLE
0
0
1
1
PWM0
READ/
WRITE
PWM
REGISTER 0
0
1
0
0
PSC1
READ/
WRITE
FREQUENCY
PRESCALER 1
The last bit of the address byte defines the operation to be
performed. When set to logic 1 a read is selected, while a logic 0
selects a write operation.
0
1
0
1
PWM1
READ/
WRITE
PWM
REGISTER 1
0
1
1
0
LS0
READ/
WRITE
LED 0–3
SELECTOR
CONTROL REGISTER
0
1
1
1
LS1
READ/
WRITE
LED 4–7
SELECTOR
1
0
0
0
LS2
READ/
WRITE
LED 8–11
SELECTOR
1
0
0
1
LS3
READ/
WRITE
LED 12–15
SELECTOR
SLAVE ADDRESS
1
1
0
0
FIXED
A2
A1
su01420
Figure 4. Slave address
Following the successful acknowledgement of the slave address,
the bus master will send a byte to the PCA9552 which will be stored
in the Control Register. This register can be read and written via the
I2C-bus.
0
0
0
AI
B3
B2
B1
B0
REGISTER DESCRIPTION
REGISTER ADDRESS
RESET STATE: 00h
INPUT0 — INPUT REGISTER 0
AUTO-INCREMENT FLAG
LED
7
SW00898
Figure 5. Control register
The lowest 3 bits are used as a pointer to determine which register
will be accessed.
LED
6
LED
5
LED
4
LED
3
LED
2
LED
1
LED
0
bit
7
6
5
4
3
2
1
0
default
X
X
X
X
X
X
X
X
The INPUT register 0 reflects the state of the device pins (inputs 0
to 7). Writes to this register will be acknowledged but will have no
effect.
If the auto-increment flag (AI) is set, the four low order bits of the
Control Register are automatically incremented after a read or write.
This allows the user to program the registers sequentially. The
contents of these bits will rollover to ‘0000’ after the last register is
accessed.
NOTE: The default value “X” is determined by the externally applied
logic level, normally ‘1’ when used for directly driving LED with
pull-up to VDD.
INPUT1 — INPUT REGISTER 1
When auto-increment flag is set (AI = 1) and a read sequence is
initiated, the sequence must start by reading a register different from
‘0’ (B3 B2 B1 B0 0 0 0 0 0).
LED
15
Only the 4 least significant bits are affected by the AI flag.
Unused bits must be programmed with zeroes.
LED
14
LED
13
LED
12
LED
11
LED
10
LED
9
LED
8
bit
7
6
5
4
3
2
1
0
default
X
X
X
X
X
X
X
X
The INPUT register 1 reflects the state of the device pins (inputs 8
to 15). Writes to this register will be acknowledged but will have no
effect.
NOTE: The default value “X” is determined by the externally applied
logic level, normally ‘1’ when used for directly driving LED with
pull-up to VDD.
PSC0 — FREQUENCY PRESCALER 0
bit
7
6
5
4
3
2
1
0
default
1
1
1
1
1
1
1
1
PSC0 is used to program the period of the PWM output.
The period of BLINK0 +
2004 Oct 01
5
(PSC0 ) 1)
44
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PWM0 — PWM REGISTER 0
PCA9552
PINS USED AS GENERAL PURPOSE I/Os
bit
7
6
5
4
3
2
1
0
default
1
0
0
0
0
0
0
0
LED pins not used to control LEDs can be used as general purpose
I/Os.
For use as input: Set LEDx to high-impedance (01) and then read
the pin state via the input register.
The PWM0 register determines the duty cycle of BLINK0. The
outputs are LOW (LED off) when the count is less than the value in
PWM0 and HIGH when it is greater. If PWM0 is programmed with
00h, then the PWM0 output is always LOW.
For use as output: Connect external pull-up resistor to the pin and
size it according to the DC recommended operating characteristics.
LED output pin is HIGH when the output is programmed as
high-impedance, and LOW when the output is programmed LOW
through the “LED selector” register. The output can be pulse-width
controlled when PWM0 or PWM1 are used.
The duty cycle of BLINK0 is: 256 – PWM0
256
PSC1 — FREQUENCY PRESCALER 1
bit
7
6
5
4
3
2
1
0
default
1
1
1
1
1
1
1
1
PSC1 is used to program the period of PWM output.
POWER-ON RESET
(PSC1
The period of BLINK1 44
When power is applied to VDD, an internal Power-On Reset holds
the PCA9552 in a reset condition until VDD has reached VPOR. At
this point, the reset condition is released and the PCA9552 registers
are initialized to their default states, all the outputs in the off state.
Thereafter, VDD must be lowered below 0.2 V to reset the device.
1)
PWM1 — PWM REGISTER 1
bit
7
6
5
4
3
2
1
0
default
1
0
0
0
0
0
0
0
The PWM1 register determines the duty cycle of BLINK1. The
outputs are LOW (LED off) when the count is less than the value in
PWM1 and HIGH when it is greater. If PWM1 is programmed with
00h, then the PWM1 output is always LOW.
EXTERNAL RESET
A reset can be accomplished by holding the RESET pin LOW for a
minimum of tW. The PCA9552 registers and I2C state machine will
be held in their default state until the RESET input is once again
HIGH.
The duty cycle of BLINK1 is: 256 – PWM1
256
LS0 — LED 0–3 SELECTOR
LED 3
LED 2
LED 1
This input requires a pull-up resistor to VDD if no active connection is
used.
LED 0
bit
7
6
5
4
3
2
1
0
default
0
1
0
1
0
1
0
1
LS1 — LED 4–7 SELECTOR
LED 7
LED 6
LED 5
LED 4
bit
7
6
5
4
3
2
1
0
default
0
1
0
1
0
1
0
1
LS2 — LED 8–11 SELECTOR
LED 11
LED 10
bit
7
6
5
4
3
LED 9
2
1
LED 8
0
default
0
1
0
1
0
1
0
1
LS3 — LED 12–15 SELECTOR
LED 15
LED 14
LED 13
LED 12
bit
7
6
5
4
3
2
1
0
default
0
1
0
1
0
1
0
1
The LSx LED select registers determine the source of the LED data.
00 = Output is set LOW (LED on)
01 = Output is set Hi-Z (LED off – default)
10 = Output blinks at PWM0 rate
11 = Output blinks at PWM1 rate
2004 Oct 01
6
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
CHARACTERISTICS OF THE I2C-BUS
Start and stop conditions
The I2C-bus is for 2-way, 2-line communication between different ICs
or modules. The two lines are a serial data line (SDA) and a serial
clock line (SCL). Both lines must be connected to a positive supply
via a pull-up resistor when connected to the output stages of a device.
Data transfer may be initiated only when the bus is not busy.
Both data and clock lines remain HIGH when the bus is not busy. A
HIGH-to-LOW transition of the data line, while the clock is HIGH is
defined as the start condition (S). A LOW-to-HIGH transition of the
data line while the clock is HIGH is defined as the stop condition (P)
(see Figure 7).
Bit transfer
System configuration
One data bit is transferred during each clock pulse. The data on the
SDA line must remain stable during the HIGH period of the clock
pulse as changes in the data line at this time will be interpreted as
control signals (see Figure 6).
A device generating a message is a transmitter: a device receiving
is the receiver. The device that controls the message is the master
and the devices which are controlled by the master are the slaves
(see Figure 8).
SDA
SCL
data line
stable;
data valid
change
of data
allowed
SW00363
Figure 6. Bit transfer
SDA
SDA
SCL
SCL
S
P
START condition
STOP condition
SW00365
Figure 7. Definition of start and stop conditions
SDA
SCL
MASTER
TRANSMITTER/
RECEIVER
SLAVE
RECEIVER
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
I2C
MULTIPLEXER
SLAVE
SW00366
Figure 8. System configuration
2004 Oct 01
7
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
Acknowledge
The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not limited. Each byte of eight bits
is followed by one acknowledge bit. The acknowledge bit is a HIGH level put on the bus by the transmitter whereas the master generates an
extra acknowledge related clock pulse.
A slave receiver which is addressed must generate an acknowledge after the reception of each byte. Also a master must generate an
acknowledge after the reception of each byte that has been clocked out of the slave transmitter. The device that acknowledges has to pull down
the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during the HIGH period of the acknowledge related clock
pulse, set-up and hold times must be taken into account.
A master receiver must signal an end of data to the transmitter by not generating an acknowledge on the last byte that has been clocked out of
the slave. In this event, the transmitter must leave the data line HIGH to enable the master to generate a stop condition.
DATA OUTPUT
BY TRANSMITTER
not acknowledge
DATA OUTPUT
BY RECEIVER
acknowledge
SCL FROM
MASTER
1
2
8
9
S
clock pulse for
acknowledgement
START condition
SW00368
Figure 9. Acknowledgement on the
2004 Oct 01
8
I2C-bus
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
Bus transactions
1
SCL
2
3
4
5
6
7
8
9
command byte
slave address
SDA
S
1
1
0
0
A2
A1
A0
start condition
0
R/W
A
0
0
0
AI
B3
data to register
B2
B1
B0
acknowledge
from slave
DATA 1
A
A
acknowledge
from slave
acknowledge
from slave
WRITE TO
REGISTER
DATA OUT
FROM PORT
DATA 1 VALID
tpv
SW02000
Figure 10. WRITE to register
acknowledge
from slave
slave address
S
1
1
0
0
A2 A1 A0
0
A
acknowledge
from slave
0
0
0
AI B3
B2 B1 B0
A
S
acknowledge
from slave
slave address
1
1
0
0
A2 A1 A0
R/W
1
acknowledge
from master
data from register
DATA
A
A
first byte
R/W
auto-increment
register address
if AI = 1
at this moment master-transmitter
becomes master-receiver and
slave-receiver becomes
slave-transmitter
data from register
no acknowledge
from master
NA
DATA
P
last byte
SW01099
Figure 11. READ from register
slave address
SDA
S
1
1
0
0
A2
start condition
data from port
A1
A0
1
R/W
data from port
DATA 1
A
A
acknowledge
from slave
DATA 4
acknowledge
from master
NA
no acknowledge
from master
P
stop
condition
READ FROM
PORT
DATA INTO
PORT
DATA 1
DATA 2
DATA 3
tph
DATA 4
tps
SW01096
NOTE:
1. This figure assumes the command byte has previously been programmed with 00h.
Figure 12. READ input port register
2004 Oct 01
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Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
APPLICATION DATA
5V
5V
10 kΩ (3×)
VDD
SDA
SDA
SCL
SCL
LED0
LED1
LED2
LED3
LED4
RESET
LED5
LED6
LED7
LED8
LED9
I2C/SMBus MASTER
A2
LED10
A1
LED11
A0
LED12
VSS
LED13
GPIOs
LED14
LED15
Note: LED0 to LED12 are used as LED drivers
LED13 to LED15 are used as regular GPIOs.
PCA9552
SW00930
Figure 13. Typical application
Minimizing IDD when the I/O is used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to VDD through a resistor as shown in Figure 13. Since the LED acts as a
diode, when the LED is off the I/O VIN is about 1.2 V less than VDD. The supply current, IDD, increases as VIN becomes lower than VDD and is
specified as ∆IDD in the DC characteristics table.
Designs needing to minimize current consumption, such as battery power applications, should consider maintaining the I/O pins greater than or
equal to VDD when the LED is off. Figure 14 shows a high value resistor in parallel with the LED. Figure 15 shows VDD less than the LED supply
voltage by at least 1.2 V. Both of these methods maintain the I/O VIN at or above VDD and prevents additional supply current consumption when
the LED is off.
3.3 V
VDD
LED
100 kΩ
VDD
VDD
LEDx
LED
LEDx
SW02086
SW02087
Figure 14. High value resistor in parallel with the LED
2004 Oct 01
5V
Figure 15. Device supplied by a lower voltage
10
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
Programming example
The following example will show how to set LED0 to LED3 on. It will
then set LED4 and LED5 to blink at 1 Hz at a 50% duty cycle. LED6
and LED7 will be set to blink at 4 Hz and at a 25% duty cycle. LED8
to LED15 will be set to off.
Table 1.
I2C-bus
Start
S
PCA9552 address with A0–A2 = low
C0h
PSC0 subaddress + auto-increment
12h
Set prescaler PSC0 to achieve a period of 1 second:
1
Blink period 1 PSC0
44
PSC0 = 43
2Bh
Set PWM0 duty cycle to 50%:
256 – PWM0 0.5
256
80h
PWM0 = 128
Set prescaler PCS1 to achieve a period of 0.25
seconds:
1
Blink period 0.25 PSC1
44
PSC1 = 10
0Ah
Set PWM1 output duty cycle to 25%:
256 – PWM1 0.25
256
C0h
PWM1 = 192
Set LED0 to LED3 on
00h
Set LED4 and 5 to PWM0, and LED6 or 7 to PWM1
FAh
Set LED8 to LED11 off
55h
Set LED12 to LED15 off
55h
Stop
P
2004 Oct 01
11
PCA9552
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
SYMBOL
PARAMETER
MIN
MAX
UNIT
–0.5
6.0
V
VSS – 0.5
5.5
V
DC output current on an I/O
—
±25
mA
ISS
Supply current
—
200
mA
VDD
Supply voltage
VI/O
DC voltage on an I/O
II/O
CONDITIONS
Ptot
Total power dissipation
—
400
mW
Tstg
Storage temperature range
–65
+150
°C
Tamb
Operating ambient temperature
–40
+85
°C
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take
precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under ”Handling MOS devices”.
DC CHARACTERISTICS
VDD = 2.3 V to 5.5 V; VSS = 0 V; Tamb = –40 °C to +85 °C; unless otherwise specified. TYP at 3.3 V and 25 °C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Supplies
VDD
Supply voltage
2.3
—
5.5
V
—
350
550
µA
IDD
Supply current
Operating mode; VDD = 5.5 V; no load;
VI = VDD or VSS; fSCL = 100 kHz
Istb
Standby current
Standby mode; VDD = 5.5 V; no load;
VI = VDD or VSS; fSCL = 0 kHz
—
2.1
5.0
µA
∆IDD
Additional standby current
Standby mode; VDD = 5.5 V; Every
LED I/O at VIN = 4.3 V; fSCL = 0 kHz
—
—
2
mA
VPOR
Power-on reset voltage (Note 1)
VDD = 3.3 V; no load; VI = VDD or VSS
—
1.7
2.2
V
V
Input SCL; input/output SDA
VIL
LOW-level input voltage
–0.5
—
0.3 VDD
VIH
HIGH-level input voltage
0.7 VDD
—
5.5
V
IOL
LOW-level output current
VOL = 0.4 V
3
6.5
—
mA
IL
Leakage current
VI = VDD = VSS
–1
—
+1
µA
CI
Input capacitance
VI = VSS
—
4.4
5
pF
VIL
LOW-level input voltage
–0.5
—
0.8
V
VIH
HIGH-level input voltage
2.0
—
5.5
V
VOL = 0.4 V; VDD = 2.3 V; Note 2
9
—
—
mA
VOL = 0.4 V; VDD = 3.0 V; Note 2
12
—
—
mA
VOL = 0.4 V; VDD = 5.0 V; Note 2
15
—
—
mA
VOL = 0.7 V; VDD = 2.3 V; Note 2
15
—
—
mA
VOL = 0.7 V; VDD = 3.0 V; Note 2
20
—
—
mA
VOL = 0.7 V; VDD = 5.0 V; Note 2
25
—
—
mA
VDD = 3.6 V; VI = 0 V or VDD
–1
—
1
µA
—
2.6
5
pF
V
I/Os
IOL
O
IL
CIO
LOW level output current
LOW-level
Input leakage current
Input/output capacitance
Select Inputs A0, A1, A2 / RESET
VIL
LOW-level input voltage
–0.5
—
0.8
VIH
HIGH-level input voltage
2.0
—
5.5
V
ILI
Input leakage current
–1
—
1
µA
CI
Input capacitance
—
2.3
5
pF
VI = VSS
NOTES:
1. VDD must be lowered to 0.2 V in order to reset part.
2. Each I/O must be externally limited to a maximum of 25 mA and each octal (LED0–LED7 and LED8–LED15) must be limited to a maximum
current of 100 mA for a device total of 200 mA.
2004 Oct 01
12
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
AC SPECIFICATIONS
SYMBOL
STANDARD MODE
I2C-BUS
PARAMETER
fSCL
Operating frequency
tBUF
FAST MODE
I2C-BUS
UNITS
MIN
MAX
MIN
MAX
0
100
0
400
kHz
Bus free time between STOP and START conditions
4.7
—
1.3
—
µs
tHD;STA
Hold time after (repeated) START condition
4.0
—
0.6
—
µs
tSU;STA
Repeated START condition set-up time
4.7
—
0.6
—
µs
tSU;STO
Set-up time for STOP condition
4.0
—
0.6
—
µs
tHD;DAT
Data in hold time
0
—
0
—
ns
tVD;ACK
—
600
—
600
ns
tVD;DAT (L)
Data out valid time3
—
600
—
600
ns
tVD;DAT (H)
Data out valid time3
—
1500
—
600
ns
tSU;DAT
Valid time for ACK
condition2
Data set-up time
250
—
100
—
ns
tLOW
Clock LOW period
4.7
—
1.3
—
µs
tHIGH
Clock HIGH period
4.0
—
0.6
—
µs
1
tF
Clock/Data fall time
—
300
20 + 0.1 Cb
300
ns
tR
Clock/Data rise time
—
1000
20 + 0.1 Cb1
300
ns
tSP
Pulse width of spikes that must be suppressed by the
input filters
—
50
—
50
ns
ns
Port Timing
tPV
Output data valid
—
200
—
200
tPS
Input data setup time
100
—
100
—
ns
tPH
Input data hold time
1
—
1
—
µs
Reset pulse width
10
—
10
—
ns
0
—
0
—
ns
400
—
400
—
ns
Reset
tW
tREC
tRESET4,5
Reset recovery time
Time to reset
NOTES:
1. Cb = total capacitance of one bus line in pF.
2. tVD;ACK = time for Acknowledgement signal from SCL LOW to SDA (out) LOW.
3. tVD;DAT = minimum time for SDA data out to be valid following SCL LOW.
4. Resetting the device while actively communicating on the bus may cause glitches or errant STOP conditions.
5. Upon reset, the full delay will be the sum of tRESET and the RC time constant of the SDA bus.
2004 Oct 01
13
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
+20%
MAX
+10%
0%
PERCENT
VARIATION
–10%
AVG
–20%
–30%
MIN
–40%
–40
0
+25
+70
+85
TEMPERATURE
(°C)
SW02311
Figure 16. Typical frequency variation over process at VDD = 2.3 V to 3.0 V
+20%
MAX
+10%
0%
PERCENT
VARIATION
AVG
–10%
–20%
MIN
–30%
–40%
–40
0
+25
+70
+85
TEMPERATURE
(°C)
Figure 17. Typical frequency variation over process at VDD = 3.0 V to 5.5 V
2004 Oct 01
14
SW02312
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
START
SCL
ACK OR READ CYCLE
SDA
30%
tRESET
RESET
50%
50%
50%
tREC
tW
tRESET
50%
LEDx
LED OFF
SW02310
Figure 18. Definition of RESET timing
SDA
tBUF
tR
tLOW
tF
tHD;STA
tSP
SCL
tHD;STA
P
tSU;STA
tHD;DAT
S
tHIGH
tSU;DAT
tSU;STO
Sr
P
SU00645
Figure 19. Definition of timing
BIT 7
MSB
(A7)
START
CONDITION
(S)
PROTOCOL
t
t
SU;STA
LOW
BIT 6
(A6)
t HIGH
BIT 8
(D0)
BIT 7
(D1)
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
1 / f SCL
SCL
t
t
tr
BUF
f
SDA
t
t HD;STA
Figure 20.
2004 Oct 01
I2C-bus
SU;DAT
t
HD;DAT
t
VD;DAT
t
VD;ACK
timing diagram; rise and fall times refer to VIL and VIH
15
t
SU;STO
SW02333
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
VDD
PCA9552
VDD
Open
RL = 500 Ω
VI
VO
PULSE
GENERATOR
D.U.T.
RT
CL
50 pF
DEFINITIONS
RL = Load resistor FOR LEDN. RL FOR SDA AND SCL > 1 kΩ
(3 mA or less current).
CL = Load capacitance includes jig and probe capacitance
RT = Termination resistance should be equal to the output
impedance ZO of the pulse generators.
Figure 21. Test circuitry for switching times
2004 Oct 01
16
SW02334
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
SO24: plastic small outline package; 24 leads; body width 7.5 mm
2004 Oct 01
17
PCA9552
SOT137-1
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm
2004 Oct 01
18
PCA9552
SOT355-1
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
HVQFN24: plastic thermal enhanced very thin quad flat package; no leads; 24 terminals;
body 4 x 4 x 0.85 mm
2004 Oct 01
19
PCA9552
SOT616-1
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
REVISION HISTORY
Rev
Date
Description
_4
20041001
Product data sheet (9397 750 13727). Supersedes data of 2003 May 02 (9397 750 11463).
Modifications:
• “Features” section on page 2:
– second bullet: change from “... between 0.15625 and 40 Hz (6.4 and 0.025 seconds)” to “... between
0.172 Hz and 44 Hz (5.82 and 0.023 seconds)”
• Section “Register Description” on page 5:
– “INPUT0 — INPUT REGISTER 1” changed to “INPUT0 — INPUT REGISTER 0”. (Also changed first
sentence following table from “The INPUT register 1 reflects ... ” to “The INPUT register 0 reflects ...”.
– “INPUT0 — INPUT REGISTER 0” table modified; note added
– “INPUT1 — INPUT REGISTER 2” changed to “INPUT1 — INPUT REGISTER 1”.
– “INPUT1 — INPUT REGISTER 1” table modified; note added
– section “PCS0—Frequency Prescaler 0”: change denominator in equation from 38 to 44.
– section “PCS1—Frequency Prescaler 1”: change denominator in equation from 38 to 44.
• Add section “Pins used as General Purpose I/Os” on page 6.
• Section “Power-on Reset” on page 6 re-written.
• Section “External Reset” on page 6: second paragraph changed from “This input requires a pull-up resistor to
VDD.” to “This input requires a pull-up resistor to VDD if no active connection is used.”.
• Figure 13 on page 10: add resistor values
• Table 1 on page 11:
– step “Set prescaler PSC0 ...”: change equation denominator from 38 to 44; change ‘PSC0 = 37’ to
‘PSC0 = 43’; change I2C-bus address from ‘25h’ to ‘2Bh’
– step “Set prescaler PCS1 ...”: change equation denominator from 38 to 44; change ‘PSC1 = 9’ to
‘PCS1 = 10’; change I2C-bus address from ‘09h’ to ‘0Ah’
• DC Characteristics table on page 12: add (new) Note 1 and its reference at VPOR.
• Add Figures 20 and 21.
_3
20030502
Product data (9397 750 11463); ECN 853-2374 29857 of 24 April 2003;
supersedes data of 24 February 2003 (9397 750 11156).
_2
20030224
Product data (9397 750 11156); ECN 853-2374 29331 of 20 December 2002;
supersedes data of 2002 Sep 09 (9397 750 10329).
_1
20020927
Product data (9397 750 10329); ECN 853-2374 28878 of 09 September 2002.
2004 Oct 01
20
Philips Semiconductors
Product data sheet
16-bit I2C LED driver with programmable blink rates
PCA9552
Purchase of Philips I2C components conveys a license under the Philips’ I2C patent
to use the components in the I2C system provided the system conforms to the
I2C specifications defined by Philips. This specification can be ordered using the
code 9398 393 40011.
Data sheet status
Level
Data sheet status [1]
Product
status [2] [3]
Definitions
I
Objective data sheet
Development
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
II
Preliminary data sheet
Qualification
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III
Product data sheet
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be
expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys
no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent,
copyright, or mask work right infringement, unless otherwise specified.
 Koninklijke Philips Electronics N.V. 2004
All rights reserved. Printed in U.S.A.
Contact information
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
Date of release: 10-04
For sales offices addresses send e-mail to:
[email protected].
Document order number:
Philips
Semiconductors
2004 Oct 01
21
9397 750 13727