INTEGRATED CIRCUITS DATA SHEET PCF8575C Remote 16-bit I/O expander for I2C-bus Product specification File under Integrated Circuits, IC12 1999 Aug 05
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus CONTENTS 1 FEATURES 2 GENERAL DESCRIPTION 3 ORDERING INFORMATION 4 BLOCK DIAGRAM 5 PINNING 6 FUNCTIONAL DESCRIPTION 6.1 6.2 6.3 6.4 6.5 Quasi-bidirectional I/Os Addressing Reading from a port (input mode) Writing to the port (output mode) Interrupt 7 CHARACTERISTICS OF THE I2C-BUS 7.1 7.2 7.3 7.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 1 PCF8575C FEATURES • Operating supply voltage from 4.5 to 5.5 V • Low standby current consumption of 10 µA maximum • I2C-bus to parallel port expander • 400 kbits/s FAST I2C-bus The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface. The PCF8575C has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 4 PCF8575C BLOCK DIAGRAM handbook, full pagewidth INT A0 A1 A2 SCL SDA 1 INTERRUPT LOGIC LP FILTER PCF8575C 21 2 3 22 23 INPUT FILTER I2C-BUS CONTROL P00 to P07 4 to 11 SHIFT REGISTER 16 BITS I/O PORT P10 to P17 13 to 20 WRITE pulse VDD VSS 24 12 READ pulse POWER-ON RESET MGS630 Fig.1 Block diagram.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 5 PCF8575C PINNING SYMBOL PIN DESCRIPTION INT 1 interrupt output (active LOW) A1 2 address input 1 A2 3 address input 2 P00 4 quasi-bidirectional I/O 00 INT 1 24 VDD P01 5 quasi-bidirectional I/O 01 A1 2 23 SDA P02 6 quasi-bidirectional I/O 02 A2 3 22 SCL P03 7 quasi-bidirectional I/O 03 P04 8 quasi-bidirectional I/O 04 P05 9 quasi-bidirectional I/O 05 P06 10 quasi-bidirectional I/O
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 6 6.1 PCF8575C FUNCTIONAL DESCRIPTION Quasi-bidirectional I/Os The 16 ports (see Fig.3) are entirely independent and can be used either as input or output ports. Input data is transferred from the ports to the microcontroller in the READ mode (see Fig.6). Output data is transmitted to the ports in the WRITE mode (see Fig.5).
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Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 6.3 Reading from a port (input mode) 6.5 All ports programmed as input should be set to logic 1. To read, the master (microcontroller) first addresses the slave device after it receives the interrupt. By setting the last bit of the byte containing the slave address to logic 1 the read mode is entered. The data bytes that follow on the SDA are the values on the ports.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus handbook, full pagewidth VDD MICROCOMPUTER PCF8575C PCF8575C (1) PCF8575C (2) PCF8575C (8) INT INT INT INT MGS634 Fig.8 Application of multiple PCF8575Cs with interrupt.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 7 7.4 CHARACTERISTICS OF THE I2C-BUS A slave receiver which is addressed must generate an acknowledge after the reception of each byte. Also a master must generate an acknowledge after the reception of each byte that has been clocked out of the slave transmitter.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus PCF8575C handbook, full pagewidth SDA SDA SCL SCL S P START condition STOP condition MBC622 Fig.10 Definition of START and STOP conditions. SDA SCL MASTER TRANSMITTER / RECEIVER SLAVE TRANSMITTER / RECEIVER SLAVE RECEIVER MASTER TRANSMITTER MASTER TRANSMITTER / RECEIVER MBA605 Fig.11 System configuration.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus PCF8575C 8 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134); note 1. SYMBOL PARAMETER MIN. MAX. UNIT VDD supply voltage −0.5 +6.5 V IDD supply current − ±100 mA ISS supply current − ±100 mA VI input voltage VSS − 0.5 VDD + 0.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus SYMBOL PARAMETER PCF8575C CONDITIONS MIN. TYP. MAX. UNIT IL leakage current at all pins VI = VDD or VSS −2 − +2 µA IIHL current through protection diode VI > VDD or VI < VSS; note 2 − − ±2 mA Input SCL; input/output SDA IOL LOW-level output current VOL = 0.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus PCF8575C 11 I2C-BUS TIMING CHARACTERISTICS See Fig.13 and note 1. SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT − 400 kHz − 50 ns BUS free time between a STOP and START condition 1.3 − µs tSU;STA START condition set-up time 0.6 − µs tHD;STA START condition hold time 0.6 − µs tLOW SCL LOW time 1.3 − µs tHIGH SCL HIGH time 0.6 − µs tr SCL and SDA rise time note 3 20 + 0.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus PCF8575C 12 DEVICE PROTECTION handbook, full pagewidth INT A1 A2 P00 P01 P02 P03 P04 P05 P06 P07 VSS 1 VDD 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 substrate VSS MGS635 Fig.14 Device protection diagram.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus PCF8575C 13 PACKAGE OUTLINE SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm D SOT340-1 E A X c HE y v M A Z 24 13 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 12 bp e detail X w M 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2.0 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus • Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. 14 SOLDERING 14.1 Introduction to soldering surface mount packages • For packages with leads on two sides and a pitch (e): This text gives a very brief insight to a complex technology.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus 14.5 PCF8575C Suitability of surface mount IC packages for wave and reflow soldering methods SOLDERING METHOD PACKAGE REFLOW(1) WAVE BGA, SQFP not suitable suitable(2) HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, SMS not PLCC(3), SO, SOJ suitable LQFP, QFP, TQFP SSOP, TSSOP, VSO suitable suitable suitable not recommended(3)(4) suitable not recommended(5) suitable Notes 1.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus PCF8575C 15 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications.
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus NOTES 1999 Aug 05 21 PCF8575C
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus NOTES 1999 Aug 05 22 PCF8575C
Philips Semiconductors Product specification Remote 16-bit I/O expander for I2C-bus NOTES 1999 Aug 05 23 PCF8575C
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