My Inquiry
My Account
Infineon Technologies CY8C4126LCE-HV413
- Part No.:
- CY8C4126LCE-HV413
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CY8C4126LCE-HV413.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32VFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,008
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4126LCE-HV413 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/diagnostic), operates directly from 12-V/24-V battery (up to 42 V), includes LIN 2.2A/SAE J2602 transceiver, and supports ASIL B hardware metrics per ISO 26262.
For engineers reviewing the CY8C4126LCE-HV413 datasheet, CY8C4126LCE-HV413 pinout, CY8C4126LCE-HV413 application, or CY8C4126LCE-HV413 equivalent, key selection criteria include HV battery input tolerance, dual-channel precision ΔΣ ADC performance with automatic gain control, LIN protocol compliance, functional safety architecture (MPU, WDT with challenge-response, SECDED ECC), and AEC-Q100 qualification.
Technical Context
The device integrates a 48-MHz Arm® Cortex®-M0+ CPU with DMA, 128 KB code flash + 8 KB data flash + 8 KB SRAM (all with ECC), and a dedicated Precision Analog Channel Subsystem (PACSS) with sequencer-controlled measurement paths. Its high-voltage subsystem includes an integrated LIN PHY, HV input divider for battery voltage sensing, and direct 12–24 V operation with overvoltage/brownout detection on 3.3-V/1.8-V supplies.
Functional safety implementation includes MPU-enforced memory isolation, window watchdog timer with challenge-response reset, analog diagnostics (redundant voltage/current/temperature paths, backup reference), and hardware SECDED ECC on all safety-critical memories - meeting ISO 26262 ASIL C process and ASIL B hardware architectural requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, up to 48 MHz - enables real-time battery state estimation and closed-loop charge control. |
| Flash Memory | 128 KB code flash + 8 KB data flash, both with ECC - ensures reliable firmware execution and parameter storage in automotive environments. |
| ADC Resolution | Dual ΔΣ ADCs: 16–20+ bits - delivers high-accuracy current shunt and battery voltage measurements under varying temperature/load. |
| HV Input Range | Direct 12–24 V battery operation, tolerates up to 42 V - eliminates need for external HV supply regulation in starter battery systems. |
| LIN Compliance | LIN 2.2A, 2.1, 2.0, 1.3, SAE J2602, ISO 17987 - enables seamless integration into vehicle body control modules and battery sensors. |
| Safety Certification | AEC-Q100 Grade 1, ISO 26262 ASIL B hardware metrics (acc. ISO 26262-10:2018E, clause 9) - satisfies functional safety requirements for battery monitoring in automotive applications. |
| GPIO Count | 9 GPIOs - sufficient for discrete I/O, status LEDs, wake-up inputs, and sensor interface in compact battery management units. |
Pinout & Package
Package: 32-pin QFN (6 × 6 mm) with wettable flanks - supports automated optical inspection (AOI) and high-reliability solder joint formation in automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Supply | 3.3-V supply for GPIOs and digital peripherals; decoupling required for noise immunity in battery-sensed environments. |
| VDDD | Digital Core Supply | 1.8-V supply for CPU, memory, and digital logic; monitored for brownout detection to prevent corruption during voltage sag. |
| VDDA | Analog Supply | 3.3-V analog rail for ADC references and PACSS; isolated to maintain precision amid digital switching noise. |
| VBAT | High-Voltage Input | Direct connection to 12-/24-V battery; feeds internal HV LDO and ADC voltage divider - no external level-shifting needed. |
| LIN_TX/RX | LIN Transceiver I/O | Single-wire bidirectional LIN bus interface compliant with SAE J2602; integrated PHY eliminates external transceiver. |
| AIN0–AIN3 | Analog Inputs | Dedicated pins for current sense (shunt), battery voltage (HV divider), temperature (NTC), and diagnostic channels - routed to PACSS sequencer. |
| XRES | External Reset | Active-low reset input with internal pull-up; supports system-level fault recovery and watchdog timeout reset. |
| SWDIO/SWCLK | Debug Interface | 2-pin Serial Wire Debug for programming, calibration, and runtime diagnostics - essential for field firmware updates in battery modules. |
Key Features
| Feature | Design Value |
|---|---|
| Dual ΔΣ ADC with automatic gain control | Enables accurate current measurement across wide dynamic range (e.g., cranking surge to standby leakage) without manual gain switching. |
| Integrated LIN transceiver | Reduces BOM count and board space by eliminating external LIN PHY; supports auto-baud and sleep/wake via bus activity. |
| Hardware ECC on flash/SRAM | Prevents silent data corruption in safety-critical battery parameters and firmware code - mandatory for ASIL B compliance. |
| Programmable analog subsystem (PACSS) | Allows reconfigurable measurement sequences (e.g., interleaved voltage/current/temp sampling) without CPU intervention - lowers power and latency. |
| Window watchdog with challenge-response | Requires periodic software-provided token to reset; detects both software lockup and malicious tampering in security-sensitive battery systems. |
Applications
| Automotive Starter Battery Monitor | 12-V/24-V Industrial UPS Sensor |
|---|---|
Use Scenario: Real-time monitoring of cranking voltage, alternator output, and state-of-charge in passenger car and commercial vehicle battery systems. IC Role / Device Role / Timing Role: Primary battery management controller with LIN slave interface to body control module; performs synchronized voltage/current acquisition every 100 ms. Use Value: Dual ΔΣ ADCs with HV input divider and automatic gain deliver ±0.5% full-scale accuracy across -40°C to +125°C, enabling precise SoH estimation without external signal conditioning. | Use Scenario: Embedded battery health telemetry in telecom and industrial uninterruptible power supplies operating from 12-V or 24-V lead-acid banks. IC Role / Device Role / Timing Role: Standalone sensor node with SPI/I2C output to host MCU; uses TCPWM blocks for PWM-controlled fan cooling based on temperature readings. Use Value: Direct 24-V operation and integrated 32-kHz PILO enable ultra-low-power deep-sleep mode (<10 µA), extending runtime between maintenance cycles. |
| ASIL-B Compliant Battery Disconnect Unit | Smart Chassis Ground Monitor |
Use Scenario: Safety-critical battery disconnect control in electric auxiliary systems where open-circuit detection must meet ASIL B requirements. IC Role / Device Role / Timing Role: Functional safety monitor that validates voltage/current thresholds and triggers hardware-based relay cutoff via GPIO; uses MPU to isolate safety-critical firmware. Use Value: Hardware ECC, window WDT, and redundant analog paths satisfy ISO 26262 hardware metrics - eliminates need for external safety monitor IC. | Use Scenario: Detection of chassis ground degradation (e.g., corrosion-induced resistance rise) in heavy-duty vehicles and construction equipment. IC Role / Device Role / Timing Role: High-impedance diagnostic channel measures voltage drop across chassis ground path using precision ΔΣ ADC with internal reference. Use Value: 20+ bit resolution and digital filtering suppress noise from engine EMI, enabling detection of <10 mΩ resistance change - critical for predictive maintenance alerts. |
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 14-cell battery monitor IC with daisy-chain capability; no programmable MCU core or LIN interface. | Targeted at multi-cell Li-ion packs; lacks HV battery input tolerance and automotive LIN bus support. | Select when monitoring >8 cells in series with centralized host control - not suitable for standalone 12/24-V lead-acid systems requiring LIN reporting. |
| ADuC7023 | ARM7TDMI-based mixed-signal MCU with 12-bit SAR ADC; no integrated LIN PHY, no ASIL certification, max 3.6-V supply. | Requires external HV front-end and LIN transceiver; not AEC-Q100 qualified or ISO 26262-aligned. | Consider only for non-automotive, low-volume industrial designs where functional safety and HV integration are not required. |
Compared with MAX17853 and ADuC7023, CY8C4126LCE-HV413 uniquely combines programmable MCU flexibility, integrated LIN, HV battery tolerance, and certified ASIL B hardware - making it the only single-chip solution for AEC-Q100-compliant 12/24-V lead-acid battery monitors with embedded safety logic.
Availability
CY8C4126LCE-HV413 is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial UPS telemetry, and ASIL-B safety-critical disconnect units requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C4126LCE-HV413 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 industrial control ICs, with global manufacturing and automotive qualification infrastructure.
CY8C4126LCE-HV413 belongs to the PSoC™ 4 HVPA-144K product line, engineered specifically for high-voltage, safety-certified battery sensing in automotive and industrial 12-/24-V systems - integrating precision analog, LIN connectivity, and functional safety hardware in a single die.
FAQ
What is the maximum battery voltage the CY8C4126LCE-HV413 can withstand?
The device operates directly from 12-V or 24-V lead-acid batteries and tolerates up to 42 V on its VBAT pin, as specified in the absolute maximum ratings table. This rating includes transient overvoltage conditions common during load dump events in automotive electrical systems, eliminating the need for external TVS clamping in most implementations.
Does the CY8C4126LCE-HV413 support LIN bus sleep/wake functionality?
Yes - the integrated LIN transceiver supports full LIN 2.2A sleep/wake protocol, including automatic wake-on-bus activity and local wake via GPIO. The device can enter deep-sleep mode with <10 µA current draw while maintaining LIN bus listening capability through hardware-level wake detection.
How is functional safety implemented in the analog measurement chain?
Functional safety in the analog path includes redundant voltage/current/temperature measurement paths, a backup reference voltage generator, and cross-channel consistency checks performed by the PACSS sequencer. These diagnostics are hardware-automated and run independently of the CPU to meet ASIL B fault-detection timing requirements.
Can the CY8C4126LCE-HV413 be programmed in-system after soldering?
Yes - it supports Serial Wire Debug (SWD) via SWDIO and SWCLK pins, enabling full in-circuit programming, calibration, and debugging without removing the device from the PCB. The debug interface remains accessible even when the device is in deep-sleep mode, provided XRES is held inactive and VDDIO/VDDD are powered.
CY8C4126LCE-HV413 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- PSOC™ 4 HV PA
- Packaging:
- Tray
- 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-HV413 FAQ
1.How can I place an order for CY8C4126LCE-HV413 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LCE-HV413 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-HV413 reliable?
The price and inventory of CY8C4126LCE-HV413 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LCE-HV413 is usually 5 days.
3.What payment methods are accepted for CY8C4126LCE-HV413?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LCE-HV413 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LCE-HV413?
CY8C4126LCE-HV413 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LCE-HV413 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-HV413?
For technical support, including CY8C4126LCE-HV413 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LCE-HV413 requirements.
6.How does Aetrix verify that CY8C4126LCE-HV413 is sourced from the original manufacturer or authorized distributors?
All CY8C4126LCE-HV413 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-HV413 meets industry standards.
7.What is the process for return or replacement of CY8C4126LCE-HV413?
All CY8C4126LCE-HV413 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LCE-HV413, 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-HV413 part is unused and in its original packaging.
Return procedure for CY8C4126LCE-HV413:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4126LCE-HV413 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
