PCA9634PW,112 NXP Semiconductors, PCA9634PW,112 Datasheet - Page 16

• Manufacturer Part Number: PCA9634PW,112
• Description: IC LED DRIVER RGBA 20-TSSOP
• Manufacturer: NXP Semiconductors
• Type: RGBA LED Driverr

Specifications of PCA9634PW,112

• Package / Case: 20-TSSOP
• Topology: Open Drain, PWM
• Number Of Outputs: 8
• Internal Driver: Yes
• Type - Primary: Backlight, LED Blinker
• Type - Secondary: RGBA
• Frequency: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Voltage - Output: 5.5V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Low Level Output Current: 25 mA
• High Level Output Current: 50 uA
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 10 mA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: 935282233112; PCA9634PW; PCA9634PW

NXP Semiconductors
PCA9634_6
Product data sheet
7.5 Power-on reset
7.6 Software Reset
When power is applied to V
condition until V
PCA9634 registers and I
zeroes) causing all the channels to be deselected. Thereafter, V
0.2 V to reset the device.
The Software Reset Call (SWRST Call) allows all the devices in the I
the power-up state value through a specific formatted I
correctly, it implies that the I
bus.
The SWRST Call function is defined as the following:
The I
a ‘SWRST Call Abort’. The PCA9634 does not initiate a reset of its registers. This
happens only when the format of the SWRST Call sequence is not correct.
1. A START command is sent by the I
2. The reserved SWRST I
3. The PCA9634 device(s) acknowledge(s) after seeing the SWRST Call address
4. Once the SWRST Call address has been sent and acknowledged, the master sends
5. Once the right 2 bytes (SWRST data byte 1 and byte 2 only) have been sent and
sent by the I
‘0000 0110’ (06h) only. If the R/W bit is set to ‘1’ (read), no acknowledge is returned to
the I
2 bytes with 2 specific values (SWRST data byte 1 and byte 2):
a. Byte 1 = A5h: the PCA9634 acknowledges this value only. If byte 1 is not equal to
b. Byte 2 = 5Ah: the PCA9634 acknowledges this value only. If byte 2 is not equal to
If more than 2 bytes of data are sent, the PCA9634 does not acknowledge any more.
correctly acknowledged, the master sends a STOP command to end the SWRST Call:
the PCA9634 then resets to the default value (power-up value) and is ready to be
addressed again within the specified bus free time (t
2
C-bus master must interpret a non-acknowledge from the PCA9634 (at any time) as
A5h, the PCA9634 does not acknowledge it.
5Ah, then the PCA9634 does not acknowledge it.
2
C-bus master.
DD
2
C-bus master.
has reached V
Rev. 06 — 12 September 2008
2
C-bus state machine are initialized to their default states (all
2
DD
2
C-bus address ‘0000 011’ with the R/W bit set to ‘0’ (write) is
C-bus is functional and that there is no device hanging the
, an internal power-on reset holds the PCA9634 in a reset
POR
. At this point, the reset condition is released and the
2
C-bus master.
2
C-bus command. To be performed
BUF
8-bit Fm+ I
).
DD
must be lowered below
2
C-bus to be reset to
PCA9634
2
© NXP B.V. 2008. All rights reserved.
C-bus LED driver
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