SCPS133K December   2005  – December 2024 PCA9557

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 I2C Interface Timing Requirements
    7. 5.7 Reset Timing Requirements
    8. 5.8 Switching Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Functional Block Diagram
    2. 7.2 Feature Description
      1. 7.2.1 RESET
        1. 7.2.1.1 RESET Errata
          1. 7.2.1.1.1 System Impact
          2. 7.2.1.1.2 System Workaround
      2. 7.2.2 Power-On Reset
    3. 7.3 Programming
      1. 7.3.1 I2C Interface
    4. 7.4 Register Maps
      1. 7.4.1 Device Address
      2. 7.4.2 Control Register And Command Byte
      3. 7.4.3 Register Descriptions
        1. 7.4.3.1 Bus Transactions
          1. 7.4.3.1.1 Writes
          2. 7.4.3.1.2 Reads
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Detailed Design Procedure
        1. 8.2.1.1 Minimizing ICC when I/O is Used to Control LED
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power-On Reset Errata
        1. 8.3.1.1 System Impact
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Pin Configuration and Functions

Figure 4-1 D, DB, DGV, PW Package, 16-Pin SOIC, SSOP, TVSOP, or TSSOP (Top View)
Figure 4-2 RGY or RGV Package, 16-Pin VQFN or VQFN (Top View)
Table 4-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
SCL 1 I Serial clock bus. Connect to VCC through a pullup resistor.
SDA 2 I/O Serial data bus. Connect to VCC through a pullup resistor.
A0 3 I Address input. Connect directly to VCC or ground.
A1 4 I Address input. Connect directly to VCC or ground.
A2 5 I Address input. Connect directly to VCC or ground.
P0 6 I/O P-port input/output. High impedance open-drain design structure. Connect to VCC through a pullup resistor.
P1 7 I/O P-port input/output. Push-pull design structure
GND 8 G Ground
P2 9 I/O P-port input/output. Push-pull design structure
P3 10 I/O P-port input/output. Push-pull design structure
P4 11 I/O P-port input/output. Push-pull design structure
P5 12 I/O P-port input/output. Push-pull design structure
P6 13 I/O P-port input/output. Push-pull design structure
P7 14 I/O P-port input/output. Push-pull design structure
RESET 15 I Active-low reset input. Connect to VCC through a pullup resistor if no active connection is used.
VCC 16 P Supply voltage
(1) I = input, O = output, P = power, G = Ground
Figure 4-3 RGV Package, 16-Pin QFN (Top View)
Table 4-2 Pin Functions, RGV
PIN TYPE(1) DESCRIPTION
NAME NO.
A0 1 I Address input. Connect directly to VCC or ground.
A1 2 I Address input. Connect directly to VCC or ground.
A2 3 I Address input. Connect directly to VCC or ground.
P0 4 I/O P-port input/output. High impedance open-drain design structure. Connect to VCC through a pullup resistor.
P1 5 I/O P-port input/output. Push-pull design structure
GND 6 G Ground
P2 7 I/O P-port input/output. Push-pull design structure
P3 8 I/O P-port input/output. Push-pull design structure
P4 9 I/O P-port input/output. Push-pull design structure
P5 10 I/O P-port input/output. Push-pull design structure
P6 11 I/O P-port input/output. Push-pull design structure
P7 12 I/O P-port input/output. Push-pull design structure
RESET 13 I Active-low reset input. Connect to VCC through a pullup resistor if no active connection is used.
VCC 14 P Supply voltage
SCL 15 I Serial clock bus. Connect to VCC through a pullup resistor.
SDA 16 I/O Serial data bus. Connect to VCC through a pullup resistor.
(1) I = input, O = output, P = power, G = Ground