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Infineon Technologies CY8C4126LCE-HV413T
- Part No.:
- CY8C4126LCE-HV413T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CY8C4126LCE-HV413T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32VFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
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Product details
Overview
CY8C4126LCE-HV413T from Infineon is a 32-bit Arm® Cortex®-M0+ MCU with integrated high-voltage precision analog subsystem, designed for lead-acid battery monitoring and management. It features dual 16–20+ bit ΔΣ ADCs (current/voltage/temperature), operates directly from 12–24 V battery (42 V tolerant), includes LIN 2.2A/SAE J2602 transceiver, and supports ASIL B hardware metrics per ISO 26262.
For engineers reviewing the CY8C4126LCE-HV413T datasheet, CY8C4126LCE-HV413T pinout, CY8C4126LCE-HV413T application, or CY8C4126LCE-HV413T equivalent, key selection criteria include HV battery input tolerance, dual-channel precision ΔΣ ADC performance, LIN protocol compliance, functional safety architecture (MPU, SECDED ECC, watchdog), and AEC-Q100 qualification for automotive use.
Technical Context
The device integrates a 48-MHz Arm® Cortex®-M0+ CPU with DMA, 128 KB flash (ECC), 8 KB SRAM (ECC), and supervisory flash. Its analog subsystem includes two independent ΔΣ ADCs-one with automatic gain control for current sensing and one with HV input divider for battery voltage measurement-both supporting digital filtering and threshold comparison.
The high-voltage subsystem enables direct connection to 12/24-V battery rails (42 V max), incorporates an integrated LIN PHY compliant with LIN 2.2A/SAE J2602, and provides hardware-level diagnostics including redundant voltage/current/temperature paths and backup reference voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, up to 48 MHz - delivers deterministic real-time control for battery state estimation and protection logic. |
| Flash Memory | 128 KB code flash + 8 KB data flash, both with SECDED ECC - ensures reliable firmware and calibration storage in automotive environments. |
| ADC Resolution | Dual ΔΣ ADCs: 16–20+ bits effective - enables high-accuracy current shunt and battery voltage measurements under noise-prone conditions. |
| HV Input Range | Direct 12/24-V battery interface, 42 V absolute max - eliminates external level-shifting for battery pack monitoring in starter batteries and 24-V commercial vehicles. |
| LIN Compliance | LIN 2.2A, 2.1, 2.0, 1.3, SAE J2602, ISO 17987 - supports interoperability with standard automotive body control modules and gateway ECUs. |
| Functional Safety | ISO 26262 ASIL B hardware metrics, MPU, windowed WDT, supply monitoring - meets requirements for battery management in ASIL-B systems without additional safety hardware. |
| Operating Temp | −40 °C to +125 °C - qualified for under-hood and battery-box mounting in automotive applications. |
Pinout & Package
Package: 32-pin QFN (6 × 6 mm) with wettable flanks - optimized for automated optical inspection (AOI) and high-reliability solder joint formation in automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O power supply | 3.3-V supply for GPIO and digital peripherals; decoupling required for LIN and ADC stability. |
| VDDD | Digital core supply | 1.8-V regulated supply for CPU, memory, and digital logic; internal LDO derived from HV rail. |
| VDDA | Analog supply | 3.3-V analog domain supply; separate from VDDIO to reduce digital switching noise coupling into ADC paths. |
| VREFP / VREFN | ADC reference inputs | Differential reference pair for precision ΔΣ conversion; supports internal or external reference selection. |
| AIN0 / AIN1 | Analog input channels | High-impedance inputs for current-sense amplifier output (AIN0) and HV battery voltage divider output (AIN1). |
| LIN_TX / LIN_RX | LIN transceiver I/O | Direct connection to LIN bus via external 12-V pull-up; supports wake-on-LIN and sleep mode recovery. |
| SWDCLK / SWDIO | Debug interface | Two-pin Serial Wire Debug interface for programming, calibration, and runtime diagnostics during production and field updates. |
Key Features
| Feature | Design Value |
|---|---|
| Dual ΔΣ ADC with sequencer | Simultaneous acquisition of current, voltage, temperature, and diagnostic channels with programmable sampling order and timing - reduces software overhead for multi-parameter BMS state-of-charge calculation. |
| Integrated LIN PHY | Single-chip LIN communication without external transceiver - lowers BOM cost and board space while maintaining full protocol compliance and fault detection. |
| HV battery interface | Direct 12/24-V rail connection with internal HV LDO and overvoltage/brownout monitoring - eliminates external regulators and improves system-level efficiency and thermal margin. |
| ASIL B-ready architecture | Hardware-enforced memory protection (MPU), SECDED ECC on all safety-critical memories, and windowed watchdog with challenge-response - enables certification without external safety monitors. |
| AEC-Q100 Grade 1 | Qualified from −40 °C to +125 °C ambient - validated for long-term reliability in engine bay and battery enclosure environments. |
Applications
| Automotive Starter Battery Monitor | Commercial Vehicle 24-V BMS |
|---|---|
Use Scenario: Real-time monitoring of cranking voltage, resting voltage, and charge acceptance in 12-V lead-acid starter batteries. IC Role / Device Role / Timing Role: Primary BMS controller performing ADC-based SoH/SoC estimation, LIN-based reporting to BCM, and overvoltage/brownout-triggered protection. Use Value: Enables predictive maintenance alerts and cold-cranking capability verification using integrated HV input and dual ΔΣ ADCs with <1 mV LSB resolution. | Use Scenario: Monitoring auxiliary battery health in Class 8 trucks, buses, and construction equipment with 24-V systems. IC Role / Device Role / Timing Role: Standalone battery monitor interfacing with vehicle CAN gateway via LIN, managing charging profiles and load shedding based on voltage/current trends. Use Value: Reduces system complexity by integrating HV interface, LIN PHY, and precision analog in one die - eliminates discrete op-amps, references, and transceivers. |
| Motorcycle Battery Management | Off-Highway Equipment Power Supervision |
Use Scenario: Compact, sealed battery monitoring in motorcycles where space, weight, and vibration resistance are critical. IC Role / Device Role / Timing Role: Low-power BMS node with deep-sleep mode, wake-on-LIN, and periodic self-calibration of ADC offset/gain. Use Value: Achieves <5 µA deep-sleep current and maintains ±0.5% voltage measurement accuracy across temperature using HPOSC-calibrated PILO and internal reference trimming. | Use Scenario: Power supervision for hydraulic controllers, PTO systems, and telematics modules in agricultural and mining machinery. IC Role / Device Role / Timing Role: System supervisor detecting brownout events, initiating graceful shutdown, and logging fault history in data flash with ECC. Use Value: Prevents data corruption and unexpected resets via supply monitoring, SECDED ECC, and hardware watchdog - critical for mission-critical embedded control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage battery monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17853 | Dedicated 12-cell Li-ion monitor IC with daisy-chain interface; no MCU core or LIN PHY. | Targets Li-ion packs only; requires external microcontroller for LIN/CAN translation and state algorithms. | Choose when scaling to >12 cells or requiring cell-balancing; avoid if lead-acid monitoring or standalone LIN reporting is needed. |
| ADuC7023 | ARM7TDMI-based mixed-signal MCU with 12-bit SAR ADC; no HV input, no LIN, no AEC-Q100 qualification. | Requires external HV dividers, LIN transceiver, and safety mechanisms - increases design effort and validation scope. | Consider only for non-automotive, low-volume industrial battery gauges where cost outweighs functional integration and safety compliance. |
Compared with MAX17853 and ADuC7023, CY8C4126LCE-HV413T uniquely combines AEC-Q100 qualification, integrated LIN PHY, HV battery interface, dual high-resolution ΔΣ ADCs, and ISO 26262-ready hardware - enabling single-chip BMS implementation for lead-acid systems without external analog or communication components.
Availability
CY8C4126LCE-HV413T is available at Aetrix Electronics and suitable for automotive starter battery monitoring, commercial vehicle 24-V BMS, motorcycle battery management, and off-highway equipment power supervision requiring stable component supply and long-term automotive-grade availability.
Supply support for CY8C4126LCE-HV413T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D and manufacturing infrastructure.
CY8C4126LCE-HV413T belongs to the PSoC™ 4 HVPA-144K product line, engineered specifically for high-voltage, safety-critical battery monitoring in automotive and industrial applications - integrating precision analog, robust communication, and functional safety in a single programmable SoC.
FAQ
What is the maximum battery voltage the CY8C4126LCE-HV413T can monitor directly?
The device tolerates up to 42 V on its HV subsystem inputs and is designed for direct connection to 12-V and 24-V lead-acid battery systems. Its integrated HV input divider scales battery voltage to the ADC's safe input range, eliminating need for external resistive dividers in most configurations. Absolute maximum rating is 42 V; operation above this risks permanent damage.
Does CY8C4126LCE-HV413T support LIN slave and master modes simultaneously?
No - it supports LIN slave functionality exclusively through its dedicated LIN block and SCB-configurable LIN Slave mode. The LIN block provides two channels compliant with LIN 2.2A/SAE J2602 but does not implement LIN master or scheduler logic. Master functionality must be implemented externally or via host MCU coordination.
How is functional safety implemented in the CY8C4126LCE-HV413T for ASIL B compliance?
Safety is enforced via hardware: Memory Protection Unit (MPU) isolates code/data regions, SECDED ECC protects flash and SRAM, windowed watchdog requires periodic challenge-response, and supply monitors detect overvoltage/brownout on 1.8-V and 3.3-V rails. These features meet ISO 26262-10:2018 hardware architectural metrics for ASIL B without requiring external safety elements.
Can the dual ΔΣ ADCs operate concurrently with different sampling rates?
Yes - the PACSS sequencer allows independent configuration of sample rate, gain, and filter settings per channel. Current and voltage channels can acquire simultaneously at different oversampling ratios (e.g., 128× for current, 64× for voltage), with results stored in separate FIFOs and timestamped for synchronized state estimation.
CY8C4126LCE-HV413T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- PSOC™ 4 HV PA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 24.576MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, Temp Sensor, WDT
- Number of I/O:
- 9
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4126LCE-HV413T FAQ
1.How can I place an order for CY8C4126LCE-HV413T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LCE-HV413T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C4126LCE-HV413T reliable?
The price and inventory of CY8C4126LCE-HV413T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LCE-HV413T is usually 5 days.
3.What payment methods are accepted for CY8C4126LCE-HV413T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LCE-HV413T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LCE-HV413T?
CY8C4126LCE-HV413T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LCE-HV413T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C4126LCE-HV413T?
For technical support, including CY8C4126LCE-HV413T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LCE-HV413T requirements.
6.How does Aetrix verify that CY8C4126LCE-HV413T is sourced from the original manufacturer or authorized distributors?
All CY8C4126LCE-HV413T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C4126LCE-HV413T meets industry standards.
7.What is the process for return or replacement of CY8C4126LCE-HV413T?
All CY8C4126LCE-HV413T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LCE-HV413T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C4126LCE-HV413T part is unused and in its original packaging.
Return procedure for CY8C4126LCE-HV413T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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