SCPS164D MAY   2007  – February 2017 TCA6507

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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 Oscillator 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
      1. 8.3.1 Seven LED Driver Outputs
      2. 8.3.2 Open-Drain Outputs Directly Drive LEDs
      3. 8.3.3 Widely Programmable
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-On Reset
      2. 8.4.2 Enable and Reset
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
      2. 8.5.2 Bus Transactions
        1. 8.5.2.1 Writes
        2. 8.5.2.2 Reads
      3. 8.5.3 Device Address
      4. 8.5.4 Control Register and Command Byte
      5. 8.5.5 Auto-Increment Mode
      6. 8.5.6 LED Operation
      7. 8.5.7 Blinking Pattern Control
      8. 8.5.8 Intensity Control
    6. 8.6 Register Maps
      1. 8.6.1 Registers 0x00 - 0x02 (Select Registers)
      2. 8.6.2 Register 0x03 (Fade-ON Time)
      3. 8.6.3 Register 0x04 (Fully-ON Time)
      4. 8.6.4 Register 0x05 (Fade-OFF Time)
      5. 8.6.5 Register 0x06 - 0x07 (Fully-OFF Time)
      6. 8.6.6 Register 0x08 (Maximum Intensity per Bank)
      7. 8.6.7 Register 0x09 (One-Shot / Master Intensity)
      8. 8.6.8 Register 0x0A (Initialization Register)
  9. 9 Application and Implementation
    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 Curve
    3. 9.3 System Example
  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 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

10 Power Supply Recommendations

10.1 Power-On Reset Requirements

In the event of a glitch or data corruption, the TCA6507 can be reset to its default conditions by using the power-on reset feature. Power-on reset requires that the device go through a power cycle to be completely reset. This reset also happens when the device is powered on for the first time in an application.

TCA6507 pwron01_cps164.gif Figure 27. VCC Is Lowered to 0 V and Then Ramped Up to VCC

The Table 26 section specifies the performance of the power-on reset feature for TCA6507.

Table 26. Recommended Supply Sequencing and Ramp Rates when EN is Connected to VCC(1)

PARAMETER MIN TYP MAX UNIT
VCC_FT Fall rate See Figure 27 0.01 100 ms
VCC_RT Rise rate See Figure 27 0.01 100 ms
VCC_TRR_GND Time spent low before re-ramp (when VCC drops to GND) See Figure 27 500 ms
(1) TA = –40°C to +85°C (unless otherwise noted)

If the EN pin is controlled independently from VCC, ramp rates and times outside these recommended limits. EN must be ramped after supply to ensure correct power-on reset sequence.