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PCA9555DWRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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PCA9555DWRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 42 page DB, DBQ, DGV, DW, OR PW PACKAGE (TOP VIEW) INT A1 A2 P00 P01 P02 P03 P04 P05 P06 P07 GND VCC SDA SCL A0 P17 P16 P15 P14 P13 P12 P11 P10 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 24 23 22 21 20 7 8 9 10 11 1 2 3 4 5 6 18 17 16 15 14 13 RGE PACKAGE (TOP VIEW) 19 12 P00 P01 P02 P03 P04 P05 A0 P17 P16 P15 P14 P13 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9555 SCPS131F – AUGUST 2005 – REVISED JUNE 2014 PCA9555 Remote 16-Bit I2C and SMBus I/O Expander With Interrupt Output and Configuration Registers 1 Features 2 Description This 16-bit I/O expander for the two-line bidirectional 1 • Low Standby-Current Consumption of 1 μA Max bus (I2C) is designed for 2.3-V to 5.5-V VCC • I2C to Parallel Port Expander operation. It provides general-purpose remote I/O • Open-Drain Active-Low Interrupt Output expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. • 5-V Tolerant I/O Ports • Compatible With Most Microcontrollers The PCA9555 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, • 400-kHz Fast I2C Bus and Polarity Inversion (active high or active low • Address by Three Hardware Address Pins for Use operation) registers. At power on, the I/Os are of up to Eight Devices configured as inputs. The system master can enable • Polarity Inversion Register the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or • Latched Outputs With High-Current Drive output is kept in the corresponding Input or Output Capability for Directly Driving LEDs register. The polarity of the Input Port register can be • Latch-Up Performance Exceeds 100 mA Per inverted with the Polarity Inversion register. All JESD 78, Class II registers can be read by the system master. • ESD Protection Exceeds JESD 22 Device Information(1) – 2000-V Human-Body Model (A114-A) PART NUMBER PACKAGE BODY SIZE (NOM) – 200-V Machine Model (A115-A) SSOP (16) 6.20 mm × 5.30 mm – 1000-V Charged-Device Model (C101) PCA9555 VQFN (16) 4.00 mm × 4.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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