PCA9556 Philips Semiconductors, PCA9556 Datasheet
PCA9556
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PCA9556 Summary of contents
Page 1
... PCA9556 Octal SMBus Registered Interface Product specification INTEGRATED CIRCUITS 1998 Dec 18 ...
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... SMBus interface. It has low current consumption and a high impedance open drain output pin, I/O0. The SMBus system master can reset the PCA9556 in the event of a timeout by asserting a LOW on the reset input. The SMBus system master can also invert the PCA9556 inputs by writing to their active HIGH polarity inversion bits. Finally, the SMBus system master can enable the PCA9556’ ...
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... Power-on Reset When power is applied to V PCA9556 in a reset state until V the reset condition is released and the PCA9556 registers and SMBus state machine will initialize to their default states. External Reset A reset can be accomplished by holding the RESET pin low for a minimum of T ...
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... NOTE: ON POWER-UP OR RESET, ALL REGISTERS RETURN TO DEFAULT VALUES 1998 Dec 18 WRITE REGISTER READ REGISTER POLARITY REGISTER Figure 3. Simplified schematic of I/O0 4 Product specification PCA9556 OUTPUT PORT REGISTER DATA I/O0 ESD PROTECTION DIODE V SS INPUT PORT REGISTER DATA POLARITY REGISTER DATA su01047 ...
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... REGISTER READ REGISTER POLARITY REGISTER Figure 4. Simplified schematic of I/O1 to I/O7 5 Product specification PCA9556 OUTPUT PORT REGISTER DATA V DD ESD PROTECTION DIODE I/O1 TO I/O7 ESD PROTECTION DIODE V SS INPUT PORT REGISTER DATA POLARITY REGISTER DATA su01055 ...
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... fixed programmable Figure 5. PCA9556 address SMBus Transactions Data is transmitted to the PCA9556 registers using Write Byte transfers (see Figures 6 and 7). Data is read from the PCA9556 registers using Read and Receive Byte transfers (see FIgures 8 and 9 SCL ...
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... A1 A0 DATA R/W acknowledge from slave DATA 2 DATA Product specification PCA9556 acknowledge acknowledge from slave from master data from register 1 DATA A A first byte R/W no acknowledge data from register from master DATA NA P last byte ...
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... 3. 3.6V – – – –0.5 2.0 –1 V and sets all I/Os to their default values DD POR 8 Product specification PCA9556 MIN MAX UNIT –0.5 +4.6 V – – – – 0.5 4.6 V – +400 A – –20 mA – – ...
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... Data hold time Data setup time Clock LOW period Clock HIGH period Clock/Data fall time Clock/Data rise time Output data valid Input data setup time Input data hold time Reset pulse width 9 Product specification PCA9556 LIMITS UNITS UNITS MIN MAX 10 100 KHz 4 ...
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... Philips Semiconductors Octal SMbus Registered Interface TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm 1998 Dec 18 10 Product specification PCA9556 SOT403-1 ...
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... Philips Semiconductors Octal SMbus Registered Interface 1998 Dec 18 NOTES 11 Product specification PCA9556 ...
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... Dec 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 PCA9556 2 C patent All rights reserved. Printed in U.S.A. Date of release: 04-99 9397 750 04974 ...