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Battery Management 
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MAX17841B
Automotive SPI Communication Interface (ASCI)
Enables Robust Daisy-Chain EMC/EMI Performance and Cost Effective Isolation Solution
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Parametric specs for UART-to-SPI Bridge
| µP I/F | SPI |
| # Channels | 1 |
| ICC (mA) (typ) | 2.3 |
| VSUPPLY (V) | 5 |
| Oper. Temp. (°C) | -40 to +105 |
| Package/Pins | TSSOP/16 |
| Budgetary Price (See Notes) | 3.81 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Automotive SPI Communication Interface (ASCI) | Mar 10, 2020 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for UART-to-SPI Bridge
| µP I/F | SPI |
| # Channels | 1 |
| ICC (mA) (typ) | 2.3 |
| VSUPPLY (V) | 5 |
| Oper. Temp. (°C) | -40 to +105 |
| Package/Pins | TSSOP/16 |
| Budgetary Price (See Notes) | 3.81 |
Key Features
- Supports Maxim’s Battery Management UART Protocol
- SPI Interface Up to 4MHz
- UART Baud Rate Programmable Up to 2Mbps
- 3.3V or 5V Operation
- Ultra-Low Quiescent Current
- Transmit and Receive Buffers with Programmable Interrupts Allow for Queuing of UART Messages
- Manchester Encoder and Decoder Reduces Host Controller Burden
- Operating Temperature Range from -40°C to +105°C (AEC-Q100 Type 2)
- Supports ASIL Requirements
Applications/Uses
- Battery Management Systems (BMS)
- Electric and Hybrid Vehicles (EV/HEV)
- Energy Storage Systems (ESS)
Description
The MAX17841B ASCI combines an SPI port with a universal asynchronous receiver transmitter (UART) specially designed to interface with Maxim battery management devices.
The UART can be configured to automatically perform Manchester encoding/decoding, message framing, parity, wake-up, and keep-alive signaling as required for Maxim’s battery management UART protocol.
The UART has programmable baud rates of 0.5Mbps, 1Mbps, or 2Mbps and supports either single-ended or differential signaling. For host efficiency, the UART contains a 28-byte transmit buffer and a 62-byte receive buffer with host-configurable interrupt events.
The UART can be configured to automatically perform Manchester encoding/decoding, message framing, parity, wake-up, and keep-alive signaling as required for Maxim’s battery management UART protocol.
The UART has programmable baud rates of 0.5Mbps, 1Mbps, or 2Mbps and supports either single-ended or differential signaling. For host efficiency, the UART contains a 28-byte transmit buffer and a 62-byte receive buffer with host-configurable interrupt events.
Technical Docs
| Data Sheet | Automotive SPI Communication Interface (ASCI) | Mar 10, 2020 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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