SCPS133K
December 2005 – December 2024
PCA9557
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
I2C Interface Timing Requirements
5.7
Reset Timing Requirements
5.8
Switching Characteristics
5.9
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Functional Block Diagram
7.2
Feature Description
7.2.1
RESET
7.2.1.1
RESET Errata
7.2.1.1.1
System Impact
7.2.1.1.2
System Workaround
7.2.2
Power-On Reset
7.3
Programming
7.3.1
I2C Interface
7.4
Register Maps
7.4.1
Device Address
7.4.2
Control Register And Command Byte
7.4.3
Register Descriptions
7.4.3.1
Bus Transactions
7.4.3.1.1
Writes
7.4.3.1.2
Reads
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Detailed Design Procedure
8.2.1.1
Minimizing ICC when I/O is Used to Control LED
8.3
Power Supply Recommendations
8.3.1
Power-On Reset Errata
8.3.1.1
System Impact
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
5.9
Typical Characteristics
Figure 5-1
Supply Current vs Temperature
Figure 5-3
Supply Current vs Supply Voltage
Figure 5-5
I/O Sink Current vs Output Low Voltage
Figure 5-7
I/O Source Current vs Output High Voltage (P7–P1)
Figure 5-9
I/O Source Current vs Output High Voltage (P7–P1)
Figure 5-11
Output High Voltage vs Temperature (P7–P1)
Figure 5-2
Standby Supply Current vs Temperature
Figure 5-4
I/O Sink Current vs Output Low Voltage
Figure 5-6
I/O Sink Current vs Output Low Voltage
Figure 5-8
I/O Source Current vs Output High Voltage (P7–P1)
Figure 5-10
Output High Voltage vs Supply Voltage (P7–P1)
Figure 5-12
Output Low Voltage vs Temperature