pca9621 NXP Semiconductors, pca9621 Datasheet

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pca9621

Manufacturer Part Number
pca9621
Description
Pca9621 65 Ma 8-bit 2-wire Bus Output Port
Manufacturer
NXP Semiconductors
Datasheet

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1. General description
2. Features and benefits
3. Applications
The PCA9621 is a monolithic CMOS integrated circuit for general purpose output drive
configurable from a 2-wire bus interface (including I
systems based on similar principles). Output ports have a 65 mA sink capability, making
them ideal for driving LEDs.
The state of the outputs is determined by a programmable 8-bit register which can be read
and written via signals from the 2-wire bus (e.g., I
The 2-wire bus interface also has 30 mA Fast-mode Plus (Fm+) capability, and
consequently can be run in excess of 1 MHz or up to 4000 pF capacitance. As such, the
PCA9621 can be connected to other 2-wire devices across long cable connections.
It can be mixed with other Fast-mode Plus slaves in systems driven by Fm+ buffers or by
the PCA9646 (fully buffered 4-channel bus switch) to build large scale systems with
high-speed or high-capacitance drive capability, for example large scale LED displays or
controlled lighting.
PCA9621
65 mA 8-bit 2-wire bus output port
Rev. 1 — 9 March 2011
8 individually selectable open-drain output ports
65 mA static sink capability on all output ports
Ports may be paralleled for up to 500 mA drive
Ideal for simple LED or general purpose output drive
Fast-mode Plus (30 mA, 4000 pF) 2-wire bus capability
Works with I
(standard and high power mode), and PMBus
Fast switching times allow operation in excess of 1 MHz
Operating voltages from 2.7 V to 5.5 V
LED and 7-segment displays
Simple high-power (500 mA) LED dimming
General purpose output
Instrumentation indicators
2
C-bus (Standard-mode, Fast-mode, and Fast-mode Plus), SMBus
2
C-bus or similar).
2
C-bus, SMBus, PMBus, and other
Product data sheet

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pca9621 Summary of contents

Page 1

... Rev. 1 — 9 March 2011 1. General description The PCA9621 is a monolithic CMOS integrated circuit for general purpose output drive configurable from a 2-wire bus interface (including I systems based on similar principles). Output ports have sink capability, making them ideal for driving LEDs ...

Page 2

... R1 R2 PCA9621 SCL 14 SDA 15 RESET Fig 1. Block diagram of PCA9621 PCA9621 Product data sheet Description plastic small outline package; 16 leads; body width 3.9 mm plastic thin shrink small outline package; 16 leads; body width 4 FILTER 2 I C-BUS SLAVE TRANSCEIVER ...

Page 3

... All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 March 2011 PCA9621 65 mA 8-bit 2-wire bus output port RESET 4 P0 PCA9621PW 002aaf382 Fig 3. Pin configuration for TSSOP16 © NXP B.V. 2011. All rights reserved. ...

Page 4

... Refer to 7 The power supply voltage for the PCA9621 may be any voltage in the range 2 5.5 V. All other I/Os are clamped to V 7.2 SCL, SDA — 2-wire bus interface The state of the output ports is determined by the Control register, which is set and read via a 2-wire bus interface using I (Fm+) I and negative supplies ...

Page 5

... NXP Semiconductors 7.6 A0, A1, A2 — address lines 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. Fig 4. The read/write bit must be set LOW to enable a write to the Control register, or HIGH to read from the Control register. ...

Page 6

... NXP Semiconductors 8. Bus transaction A typical I transaction, the output ports (P0 to P7) of the PCA9621 are updated upon receipt of the STOP condition. S START condition Fig 6. A typical read transaction is shown in S START condition Fig 7. 9. Limiting values Table 3. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). ...

Page 7

... 5 pin 200 Ω; measured from All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 March 2011 PCA9621 65 mA 8-bit 2-wire bus output port = 5.5 V unless otherwise specified. DD Min Typ Max 2 − 0 0.3 ...

Page 8

... V OL (mV) 300 200 5.5 V 100 0 − Typical SDA LOW-level output voltage versus ambient temperature 002aaf389 (mA) O(sink) PCA9621 002aaf373 100 150 T (C) amb © NXP B.V. 2011. All rights reserved ...

Page 9

... NXP Semiconductors 11. Application information Figure 11 drive application. Each PCA9621 can drive 8 LEDs, and using the address pins on the IC uniquely addressed devices can sit on one bus branch. The PCA9646 has four such outputs, giving 256 LEDs in the structure shown. By additionally using the address pins on the PCA9646, the entire structure may be repeated 8 times, allowing 2048 LEDs to be uniquely driven. By additionally placing PCA9646’ ...

Page 10

... NXP Semiconductors Figure 12 plus decimal point can be driven from a single PCA9621. By using the address pins digits can be addressed from a single bus. When running at 1 MHz, all 8 digits can be updated in less than 0.2 ms. Further, by using the arrangement described above and shown in of digits driven may be increased significantly. ...

Page 11

... detail 6.2 1.0 0.7 1.05 0.25 0.25 5.8 0.4 0.6 0.039 0.028 0.041 0.01 0.01 0.016 0.020 EUROPEAN PROJECTION PCA9621 SOT109 θ (1) θ 0.7 0 0.028 0.004 0.012 ISSUE DATE 99-12-27 03-02-19 © NXP B.V. 2011. All rights reserved ...

Page 12

... Rev. 1 — 9 March 2011 65 mA 8-bit 2-wire bus output port detail 6.6 0.75 0.4 1 0.2 0.13 6.2 0.50 0.3 EUROPEAN PROJECTION PCA9621 SOT403 θ (1) θ 0.40 8 0.1 o 0.06 0 ISSUE DATE 99-12-27 03-02-18 © NXP B.V. 2011. All rights reserved ...

Page 13

... Package placement • Inspection and repair • Lead-free soldering versus SnPb soldering PCA9621 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 March 2011 PCA9621 65 mA 8-bit 2-wire bus output port © NXP B.V. 2011. All rights reserved ...

Page 14

... Volume (mm ) < 350 260 260 250 Figure 16. All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 March 2011 PCA9621 65 mA 8-bit 2-wire bus output port Figure 16) than a SnPb process, thus ≥ 350 220 220 350 to 2000 > 2000 260 260 250 ...

Page 15

... PMBus POR SMBus 16. References [1] UM10204, “I www.nxp.com/documents/user_manual/UM10204.pdf 17. Revision history Table 8. Revision history Document ID Release date PCA9621 v.1 20110309 PCA9621 Product data sheet maximum peak temperature = MSL limit, damage level temperature minimum peak temperature = minimum soldering temperature MSL: Moisture Sensitivity Level Abbreviations Description ...

Page 16

... Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 March 2011 PCA9621 65 mA 8-bit 2-wire bus output port © NXP B.V. 2011. All rights reserved ...

Page 17

... I C-bus — logo is a trademark of NXP B.V. http://www.nxp.com salesaddresses@nxp.com All information provided in this document is subject to legal disclaimers. Rev. 1 — 9 March 2011 PCA9621 65 mA 8-bit 2-wire bus output port © NXP B.V. 2011. All rights reserved ...

Page 18

... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2011. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com PCA9621 All rights reserved. Date of release: 9 March 2011 Document identifier: PCA9621 ...

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