ZHCSJK4G June   2009  – March 2021 PCA9548A

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Interface Timing Requirements
    7. 6.7 Reset Timing Requirements
    8. 6.8 Switching Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 RESET Input
        1. 8.4.1.1 RESET Errata
          1. 8.4.1.1.1 System Impact
          2. 8.4.1.1.2 System Workaround
      2. 8.4.2 Power-On Reset
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
    6. 8.6 Register Maps
      1. 8.6.1 Device Address
      2. 8.6.2 Control Register
      3. 8.6.3 Bus Transactions
        1. 8.6.3.1 Writes
        2. 8.6.3.2 Reads
  9. 9 Application Information Disclaimer
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power-On Reset Requirements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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5 Pin Configuration and Functions

Figure 5-1 DB, DGV, DW or PW Package, 24-Pin SSOP, TVSOP, SOIC or TSSOP , Top View
Table 5-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
DB, DW, DGV , PW
A0 1 I Address input 0. Connect directly to VCC or ground
A1 2 I Address input 1. Connect directly to VCC or ground
RESET 3 I Active-low reset input. Connect to VCC through a pull-up resistor, if not used
SD0 4 I/O Serial data 0. Connect to VCC through a pull-up resistor
SC0 5 I/O Serial clock 0. Connect to VCC through a pull-up resistor
SD1 6 I/O Serial data 1. Connect to VCC through a pull-up resistor
SC1 7 I/O Serial clock 1. Connect to VCC through a pull-up resistor
SD2 8 I/O Serial data 2. Connect to VCC through a pull-up resistor
SC2 9 I/O Serial clock 2. Connect to VCC through a pull-up resistor
SD3 10 I/O Serial data 3. Connect to VCC through a pull-up resistor
SC3 11 I/O Serial clock 3. Connect to VCC through a pull-up resistor
GND 12 — Ground
SD4 13 I/O Serial data 4. Connect to VCC through a pull-up resistor
SC4 14 I/O Serial clock 4. Connect to VCC through a pull-up resistor
SD5 15 I/O Serial data 5. Connect to VCC through a pull-up resistor
SC5 16 I/O Serial clock 5. Connect to VCC through a pull-up resistor
SD6 17 I/O Serial data 6. Connect to VCC through a pull-up resistor
SC6 18 I/O Serial clock 6. Connect to VCC through a pull-up resistor
SD7 19 I/O Serial data 7. Connect to VCC through a pull-up resistor
SC7 20 I/O Serial clock 7. Connect to VCC through a pull-up resistor
A2 21 I Address input 2. Connect directly to VCC or ground
SCL 22 I/O Serial clock bus. Connect to VCC through a pull-up resistor
SDA 23 I/O Serial data bus. Connect to VCC through a pull-up resistor
VCC 24 — Supply voltage
Figure 5-2 RGE Package, 24-Pin VQFN , Top View
Table 5-2 Pin Functions, RGE
PIN I/O DESCRIPTION
NAME NO.
SD0 1 I/O Serial data 0. Connect to VCC through a pull-up resistor
SC0 2 I/O Serial clock 0. Connect to VCC through a pull-up resistor
SD1 3 I/O Serial data 1. Connect to VCC through a pull-up resistor
SC1 4 I/O Serial clock 1. Connect to VCC through a pull-up resistor
SD2 5 I/O Serial data 2. Connect to VCC through a pull-up resistor
SC2 6 I/O Serial clock 2. Connect to VCC through a pull-up resistor
SD3 7 I/O Serial data 3. Connect to VCC through a pull-up resistor
SC3 8 I/O Serial clock 3. Connect to VCC through a pull-up resistor
GND 9 — Ground
SD4 10 I/O Serial data 4. Connect to VCC through a pull-up resistor
SC4 11 I/O Serial clock 4. Connect to VCC through a pull-up resistor
SD5 12 I/O Serial data 5. Connect to VCC through a pull-up resistor
SC5 13 I/O Serial clock 5. Connect to VCC through a pull-up resistor
SD6 14 I/O Serial data 6. Connect to VCC through a pull-up resistor
SC6 15 I/O Serial clock 6. Connect to VCC through a pull-up resistor
SD7 16 I/O Serial data 7. Connect to VCC through a pull-up resistor
SC7 17 I/O Serial clock 7. Connect to VCC through a pull-up resistor
A2 18 I Address input 2. Connect directly to VCC or ground
SCL 19 I/O Serial clock bus. Connect to VCC through a pull-up resistor
SDA 20 I/O Serial data bus. Connect to VCC through a pull-up resistor
VCC 21 — Supply voltage
A0 22 I Address input 0. Connect directly to VCC or ground
A1 23 I Address input 1. Connect directly to VCC or ground
RESET 24 I Active-low reset input. Connect to VCC through a pull-up resistor, if not used
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