Overview
The L9963T-TR, produced by STMicroelectronics, is a general-purpose SPI to isolated SPI transceiver designed to create a communication bridge between devices located in different voltage domains. This device is particularly useful in applications where data needs to be transferred between devices operating at different voltage levels. It supports both transformer and capacitive isolation, making it versatile for various decoupling circuitries. The L9963T-TR is AEC-Q100 qualified and fully ISO26262 compliant, making it suitable for ASIL-D systems and automotive applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 4.5 | - | 5.5 | V |
| Supply Voltage (VIO) | 3.0 | - | 5.5 | V |
| SPI Clock Frequency (Slave) | - | - | 10 | MHz |
| SPI Clock Frequency (Master) | 250 kHz | - | 8 MHz | - |
| Isolated SPI Bit Rate | 333 kbps | - | 2.66 Mbps | - |
| Operating Temperature | -40 | - | 105 | °C |
| Junction Temperature | -40 | - | 125 | °C |
| Package | - | - | SO-16 | - |
Key Features
- Supports both transformer and capacitive isolation for isolated SPI communication.
- Configurable as either SPI Master or Slave, supporting SPI frames from 8 to 64 bits long.
- SPI peripheral can operate up to 10 MHz in Slave mode and programmable frequencies (250 kHz, 1 MHz, 4 MHz, 8 MHz) in Master mode.
- Isolated SPI peripheral features two operating modes: slow @333 kbps and fast @2.66 Mbps.
- Internal queues for buffering and decoupling the two different clock domains (3 slots for SPI port, 20 slots for isolated SPI side).
- Compatible with both 3.3 V and 5 V logics.
- AEC-Q100 qualified and ISO26262 compliant for automotive applications.
- Low standby current and power management features including sleep mode.
- Internal oscillators for main and standby functionalities.
Applications
- Automotive: 48 V and high-voltage systems.
- Backup energy storage systems and UPS.
- Industrial communication networks.
- Portable and semi-portable equipment.
- Remote sensors.
- Battery Management Systems (BMS) applications.
Q & A
- What is the primary function of the L9963T-TR?
The L9963T-TR is a general-purpose SPI to isolated SPI transceiver designed to create a communication bridge between devices located in different voltage domains.
- What types of isolation does the L9963T-TR support?
The device supports both transformer and capacitive isolation.
- Can the L9963T-TR be configured as both Master and Slave?
Yes, the device can be configured as either SPI Master or Slave.
- What are the operating modes of the isolated SPI peripheral?
The isolated SPI peripheral features two operating modes: slow @333 kbps and fast @2.66 Mbps.
- What is the maximum SPI clock frequency when configured as a Slave?
The SPI peripheral can work up to 10 MHz when configured as a Slave.
- What are the programmable SPI clock frequencies when configured as a Master?
The SPI clock frequency can be programmed among 250 kHz, 1 MHz, 4 MHz, and 8 MHz when configured as a Master.
- Is the L9963T-TR compatible with both 3.3 V and 5 V logics?
Yes, the device is compatible with both 3.3 V and 5 V logics.
- What are the key applications of the L9963T-TR?
The device is used in automotive, backup energy storage systems, industrial communication networks, portable equipment, remote sensors, and BMS applications.
- Is the L9963T-TR AEC-Q100 qualified and ISO26262 compliant?
Yes, the device is AEC-Q100 qualified and fully ISO26262 compliant for ASIL-D systems.
- What is the package type of the L9963T-TR?
The device comes in a SO-16 package.
