PCA9544 Philips Semiconductors, PCA9544 Datasheet
PCA9544
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PCA9544 Summary of contents
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... PCA9544 2 4-channel I C multiplexer and interrupt controller Product specification Supersedes data of 1999 Apr 01 hilips Semiconductors INTEGRATED CIRCUITS 1999 Oct 07 ...
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... The pass gates of the multiplexer are constructed such that the V pin can be used to limit the maximum high voltage which will be passed by the PCA9544. This allows the use of different bus voltages on each SCx/SDx pair, so that 3.3 V parts can communicate with 5 V parts without any additional protection. ...
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... Philips Semiconductors 2 4-channel I C multiplexer and interrupt controller BLOCK DIAGRAM SC0 SC1 SC2 SC3 SD0 SD1 SD2 SD3 V SS POWER- RESET SCL INPUT FILTER SDA INT[0–3] 1999 Oct C-BUS CONTROL INT LOGIC 3 Product specification PCA9544 INT SW00379 ...
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... A SC0x/SD0x downstream pair, or channel, is selected by the contents of the control register. This register is written after the PCA9544 has been addressed. The 3 LSBs of the control byte are used to determine which channel selected. When a channel is selected, the channel will become active after a stop condition has ...
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... Figure 3). SW00363 Figure 2. Definition of start and stop conditions SLAVE MASTER TRANSMITTER/ TRANSMITTER RECEIVER Figure 3. System configuration 5 Product specification PCA9544 SDA SCL P STOP condition SW00365 MASTER TRANSMITTER/ MULTIPLEXER ...
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... DATA OUTPUT BY TRANSMITTER DATA OUTPUT BY RECEIVER SCL FROM MASTER S START condition slave address fixed hardware selectable Figure 5. Slave address 1999 Oct 07 not acknowledge acknowledge Figure 4. Acknowledgement on the I C-bus SW00453 6 Product specification PCA9544 9 clock pulse for acknowledgement SW00368 ...
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... PREVIOUS CHANNEL Figure 6. WRITE control register CONTROL REGISTER INT3 INT2 INT1 INT0 R/W acknowledge from slave Figure 7. READ control register 7 Product specification PCA9544 acknowledge from slave NEW CHANNEL t pv SW00377 last byte ...
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... A swin DD swout 2 –100 A swin DD swout 0 Product specification PCA9544 RATING UNIT –0.5 to +7.0 V –0 100 mA 100 mA 400 mW –60 to +150 +70 C LIMITS UNIT UNIT MIN TYP MAX 2.5 3 ...
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... C-bus system, but the requirement 1000 + 250 = 1250ns (according to the standard-mode rmax SU:DAT HD;DAT HIGH SU;DAT Sr 2 Figure 8. Definition of timing on the I C-bus 9 Product specification PCA9544 2 FAST-MODE I C-BUS UNIT MIN MAX 400 KHz – 1.3 – s – 0.6 – ...
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... Philips Semiconductors 2 4-channel I C multiplexer and interrupt controller TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm 1999 Oct 07 10 Product specification PCA9544 SOT360-1 ...
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... Philips Semiconductors 2 4-channel I C multiplexer and interrupt controller 1999 Oct 07 NOTES 11 Product specification PCA9544 ...
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... Oct components conveys a license under the Philips’ system provided the system conforms to the [1] Copyright Philips Electronics North America Corporation 1999 Document order number: 12 Product specification PCA9544 2 C patent All rights reserved. Printed in U.S.A. Date of release: 10-99 9397–750–06498 ...