PCA8574A NXP [NXP Semiconductors], PCA8574A Datasheet
PCA8574A
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PCA8574A Summary of contents
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PCA8574/74A Remote 8-bit I/O expander for I Rev. 02 — 14 May 2007 1. General description The PCA8574/74A provide general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I data (SDA)). The devices consist of an ...
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... SO16 PCA8574AD PCA8574AD PCA8574N PCA8574N DIP16 PCA8574AN PCA8574AN PCA8574PW PCA8574 TSSOP16 PCA8574APW PA8574A PCA8574TS PCA8574 SSOP20 PCA8574ATS PCA8574A 5. Block diagram INT AD0 AD1 AD2 SCL SDA Fig 1. Block diagram of PCA8574/74A PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I Description plastic small outline package ...
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... A I trt(pu interrupt logic 002aac109 AD0 1 AD1 2 3 AD2 P0 4 PCA8574D PCA8574AD 002aac678 Fig 4. Pin configuration for SO16 © NXP B.V. 2007. All rights reserved SDA 14 SCL 13 ...
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... Rev. 02 — 14 May 2007 PCA8574/74A 2 C-bus with interrupt INT 1 SCL 2 3 n.c. 4 SDA V 5 PCA8574TS DD PCA8574ATS AD0 6 7 AD1 n.c. 8 AD2 002aac680 Fig 6. Pin configuration for SSOP20 © NXP B.V. 2007. All rights reserved n.c. 17 ...
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... SDA V DD AD0 AD1 n.c. AD2 n. n. PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I Pin description for SSOP20 Pin Description 1 interrupt output (active LOW) 2 serial clock line 3 not connected 4 serial data line 5 supply voltage 6 address input 0 7 address input 1 ...
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... AD2, AD1, and AD0. Address values depending on AD2, AD1, and AD0 can be found in Table 4 “PCA8574 address map” Remark: When using the PCA8574A, the General Call address (0000 0000b) and the Device ID address (1111 100Xb) are reserved and cannot be used as device address. ...
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... PCA8574/74A. The 8-bit data is presented on the port lines after it has been acknowledged by the PCA8574/74A. The number of data bytes that can be sent successively is not limited. The previous data is overwritten every time a data byte has been sent. PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I PCA8574A address map ...
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... A LOW-to-HIGH transition of SDA while SCL is HIGH is defined as the STOP condition (P). Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the last acknowledge phase is valid (Output mode). Input data is lost. Fig 9. Read input port register PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I 7 ...
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... During the resetting of the interrupt itself, any changes on the I/Os may not generate an interrupt. After the interrupt is reset any change in I/Os will be detected and transmitted as an INT. Fig 10. Application of multiple PCA8574s with interrupt PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for internal Power-On Reset (POR) holds the ...
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... 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 PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I ...
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... 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. Fig 14. Acknowledgement on the I PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I SLAVE SLAVE ...
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... Both bits must then always be turned on or off together pins (one octal) can be connected together to drive 200 mA. Fig 16. High current-drive load application PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I 2 C-bus ...
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... tot P/out T stg T amb [1] Total package (maximum) output current is 400 mA. PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I Limiting values Parameter supply voltage supply current ground supply current input voltage input current output current total power dissipation power dissipation per output ...
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... Each bit must be limited to a maximum and the total package limited to 200 mA due to internal busing limits. [3] The value is not tested, but verified on sampling basis. PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for +85 C; unless otherwise specified. ...
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... C = total capacitance of one bus line in pF. b [6] Input filters on the SDA and SCL inputs suppress noise spikes less than 50 ns. PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for +85 C; unless otherwise specified. Limits are for Fast-mode I amb Conditions ...
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... NXP Semiconductors START protocol condition (S) t SU;STA SCL t BUF SDA t HD;STA Rise and fall times refer Fig 17. I C-bus timing diagram PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I bit 7 bit 6 MSB (A6) (A7 LOW HIGH 1 /f SCL ...
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... Note 1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. OUTLINE VERSION IEC SOT38-1 050G09 Fig 18. Package outline SOT38-1 (DIP16) PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for scale (1) ( ...
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... Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. OUTLINE VERSION IEC SOT162-1 075E03 Fig 19. Package outline SOT162-1 (SO16) PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for scale ...
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... Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION IEC SOT403-1 Fig 20. Package outline SOT403-1 (TSSOP16) PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for ...
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... max. 0.15 1.4 mm 1.5 0.25 0 1.2 Note 1. Plastic or metal protrusions of 0.20 mm maximum per side are not included. OUTLINE VERSION IEC SOT266-1 Fig 21. Package outline SOT266-1 (SSOP20) PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for 2.5 scale (1) ( ...
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... It is imperative that the peak temperature is high enough for the solder to make reliable solder joints (a solder paste characteristic). In addition, the peak temperature must be low enough that the PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I ...
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... Studies have shown that small packages reach higher temperatures during reflow soldering, see Fig 22. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description” . PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I and 10 SnPb eutectic process (from J-STD-020C) Package refl ...
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... Suitability of IC packages for wave, reflow and dipping soldering methods Mounting Package Through-hole mount CPGA, HCPGA DBS, DIP, HDIP, RDBS, SDIP, SIL [4] Through-hole-surface PMFP mount PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I [1] Soldering method Wave suitable suitable not suitable Rev. 02 — 14 May 2007 ...
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... Image sensor packages in principle should not be soldered. They are mounted in sockets or delivered pre-mounted on flex foil. However, the image sensor package can be mounted by the client on a flex foil by using a hot bar soldering process. The appropriate soldering profile can be provided on request. PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I ...
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... TSSOP16) Table 3 title changed (deleted TSSOP20) Section 14 “Package outline”: changed package from TSSOP20 (SOT360-1) to TSSOP16 (SOT403-1) Product data sheet Rev. 02 — 14 May 2007 PCA8574/74A 2 C-bus with interrupt Change notice Supersedes - PCA8574_PCA8574A_1 - - © NXP B.V. 2007. All rights reserved ...
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... NXP Semiconductors product can reasonably be expected to 20. Contact information For additional information, please visit: For sales office addresses, send an email to: PCA8574_PCA8574A_2 Product data sheet Remote 8-bit I/O expander for I [3] Definition This document contains data from the objective specification for product development. ...
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... For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com PCA8574/74A 2 C-bus with interrupt Legal information . . . . . . . . . . . . . . . . . . . . . . 26 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 26 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Disclaimers Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Contact information . . . . . . . . . . . . . . . . . . . . 26 Contents Date of release: 14 May 2007 Document identifier: PCA8574_PCA8574A_2 All rights reserved. ...