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TCAL9539-Q1 Automotive Low-Voltage 16-Bit I2C-Bus, SMBus I/O Expander with Interrupt Output, Reset, and Configuration Registers
SCPS285A
november 2022 – august 2023
TCAL9539-Q1
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TCAL9539-Q1 Automotive Low-Voltage 16-Bit I2C-Bus, SMBus I/O Expander with Interrupt Output, Reset, and Configuration Registers
1
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
I2C Bus Timing Requirements
6.8
Switching Characteristics
6.9
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagrams
8.3
Feature Description
8.3.1
I/O Port
8.3.2
Adjustable Output Drive Strength
8.3.3
Interrupt Output (INT)
8.3.4
Reset Input (RESET)
8.3.5
Software Reset Call
8.4
Device Functional Modes
8.4.1
Power-On Reset
8.5
Programming
8.5.1
I2C Interface
8.6
Register Maps
8.6.1
Device Address
8.6.2
Control Register and Command Byte
8.6.3
Register Descriptions
8.6.4
Bus Transactions
8.6.4.1
Writes
8.6.4.2
Reads
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Minimizing ICC When I/Os Control LEDs
9.2.3
Application Curves
9.3
Power Supply Recommendations
9.3.1
Power-On Reset Requirements
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Receiving Notification of Documentation Updates
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
11
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RTW|24
MPQF167C
Thermal pad, mechanical data (Package|Pins)
RTW|24
QFND125K
Orderable Information
scps285a_oa
scps285a_pm
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Data Sheet
TCAL9539-Q1
Automotive Low-Voltage 16-Bit I
2
C-Bus, SMBus I/O Expander with Interrupt Output, Reset, and Configuration Registers
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40°C to +125°C, T
A
Functional safety-capable
Documentation available to aid in functional safety system design
Operating power-supply voltage range of 1.08 V to 3.6 V
Low standby current consumption of 1 µA typical at 1.8 V
1-MHz fast mode plus I
2
C bus
Hardware address pin allows two devices on the same I
2
C, SMBus bus
Active-low reset input (
RESET
)
Open-drain active-low interrupt output (
INT
)
Input or output configuration register
Polarity inversion register
Configurable I/O drive strength register
Pull-up and pull-down resistor configuration register
Internal power-on reset
Noise filter on SCL or SDA inputs
Latched outputs with high-current drive maximum capability for directly driving LEDs
Latch-up performance exceeds 100 mA per AEC Q100-004
ESD protection exceeds AEC - Q100 requirements
4000-V Human-body model (AEC - Q100-002)
1000-V Charged-device model (AEC - Q100-011)
2
Applications
Automotive infotainment and cluster
Body electronics and lighting
Hybrid, electric and powertrain systems
Industrial transportation
Products with GPIO-limited processors