PCA9621D,118 NXP Semiconductors, PCA9621D,118 Datasheet - Page 5

• Manufacturer Part Number: PCA9621D,118
• Description: IC BUS OUTPUT PORT 2WIRE 16SOIC
• Manufacturer: NXP Semiconductors
• Series: -r

Specifications of PCA9621D,118

• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Package / Case: SO-16
• Maximum Power Dissipation: 300 mW
• Mounting Style: SMD/SMT
• Supply Current: 1 uA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-6671-2

NXP Semiconductors
PCA9621
Product data sheet
7.6 A0, A1, A2 — address lines
7.7 Control register
The slave address of the PCA9621 is shown in
must be driven to a HIGH or LOW level—they are not internally pulled to a default state.
The read/write bit must be set LOW to enable a write to the Control register, or HIGH to
read from the Control register.
The Control register of the PCA9621 is shown in
can be activated independently by setting the appropriate bit in the Control register.
A LOW or ‘zero’ bit indicates that the respective channel (P7 to P0) is disabled
(high-impedance). The default reset condition of the register is all zeros, all ports
high-impedance. A HIGH or ‘one’ bit indicates the respective channel is active (sinking).
Example: Programming C1h (1100 0001b) into the Control register results in ports P0, P6
and P7 being ON (sinking) and the remaining ports being OFF (high-impedance).
Fig 4.
Fig 5.
Slave address
1 = ON (sinking)
0 = OFF (high-impedance)
Control register
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 9 March 2011
MSB
1
P7
1
fixed
P6
0
P5
0
P4
A2
selectable
externally
P3
Figure
A1
Figure
P2
A0 R/W
65 mA 8-bit 2-wire bus output port
P1
4. The address pins (A2, A1, A0)
read = 1
write = 0
002aaf383
5. Each of the four output ports
P0
002aaf384
LSB
PCA9621
© NXP B.V. 2011. All rights reserved.
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