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Infineon Technologies CY8C4147LCE-HV423T
- Part No.:
- CY8C4147LCE-HV423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CY8C4147LCE-HV423T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 32VFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,794
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Product details
Overview
CY8C4147LCE-HV423T from Infineon is a 32-bit Arm® Cortex®-M0+ MCU with integrated high-voltage precision analog subsystem, AEC-Q100 qualified for automotive lead-acid battery monitoring. It delivers 48 MHz CPU operation, dual 16–20+ bit ΔΣ ADCs (current/voltage/temperature/diagnostic), integrated LIN transceiver compliant with LIN 2.2A/SAE J2602/ISO 17987, and operates directly from 12 V/24 V battery rails (42 V tolerant).
For engineers reviewing the CY8C4147LCE-HV423T datasheet, CY8C4147LCE-HV423T pinout, CY8C4147LCE-HV423T application, or CY8C4147LCE-HV423T equivalent, key selection criteria include HV battery voltage/current measurement accuracy, ASIL B hardware compliance per ISO 26262-10:2018E, LIN protocol stack readiness, and on-chip ECC-protected memory architecture for functional safety.
Technical Context
The device implements a dedicated high-voltage analog front-end with two independent ΔΣ ADCs: one with automatic gain control for current sensing and another with integrated HV input divider (up to 42 V) for battery voltage monitoring. Its analog diagnostics include redundant voltage/current/temperature paths and backup reference voltage validation.
Functional safety is enforced via MPU, window watchdog timer with challenge-response, supply monitoring for 3.3 V/1.8 V rails, SECDED ECC on SRAM/flash, and hardware-level analog path redundancy - all aligned to ISO 26262 ASIL C process and ASIL B hardware metrics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time battery state estimation with low-latency interrupt handling |
| Flash Memory | 128 KB code flash + 8 KB data flash, both with ECC - supports safe firmware updates and parameter storage in automotive environments |
| ADC Resolution | Dual ΔΣ ADCs: 16–20+ bits - provides high-precision current shunt and battery voltage measurements under varying temperature/load |
| LIN Compliance | LIN 2.2A / SAE J2602 / ISO 17987 - ensures interoperability with automotive body control modules and gateway ECUs |
| Operating Voltage | Direct 12 V/24 V battery input, 42 V absolute max - eliminates need for external HV DC-DC pre-regulator in battery management systems |
| Safety Certification | AEC-Q100 Grade 1, ISO 26262 ASIL B hardware metrics - meets requirements for battery monitoring in ASIL-B automotive domains |
| GPIO Count | 9 pins - sufficient for dedicated HV analog inputs, LIN bus, SWD debug, and minimal control I/O in compact BMS designs |
Pinout & Package
Package: 32-pin QFN (6 × 6 mm) with wettable flanks - optimized for automated optical inspection (AOI) and high-reliability automotive solder joint formation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O power supply | 3.3 V supply for GPIO and digital peripherals; decoupled separately for noise immunity in mixed-signal operation |
| VDDD | Digital core supply | 1.8 V regulated core supply - powers CPU, memory, and digital logic; monitored for brownout detection |
| VDDA | Analog supply | 3.3 V analog rail feeding ADC references and precision analog blocks; isolated to minimize digital switching noise |
| VREFH/VREFL | ADC reference inputs | External reference pair enabling ratiometric or absolute voltage measurement calibration for battery voltage channel |
| AIN0–AIN3 | Analog input channels | Dedicated pins for current sense (AIN0), battery voltage (AIN1 w/ internal HV divider), temperature (AIN2), diagnostic (AIN3) |
| LIN_TX/LIN_RX | LIN transceiver interface | Direct connection to LIN bus physical layer; supports wake-up, sleep, and protocol-compliant frame transmission/reception |
| SWDCLK/SWDIO | Debug interface | Two-pin Serial Wire Debug interface - enables in-circuit programming and real-time trace without additional UART pins |
Key Features
| Feature | Design Value |
|---|---|
| Dual precision ΔΣ ADC subsystem | Independent current and voltage acquisition paths with automatic gain control and HV input scaling - eliminates external signal conditioning for shunt-based current and direct battery voltage sensing |
| Integrated LIN 2.2A transceiver | Single-chip LIN node with protocol engine and physical layer - reduces BOM count and PCB area vs. discrete transceiver + MCU solutions |
| ASIL B-compliant safety architecture | MPU, window WDT, supply monitors, SECDED ECC, and analog path redundancy - satisfies hardware-level requirements for ISO 26262 automotive battery monitoring |
| HV direct-battery operation | 42 V tolerant IO and internal LDO - enables direct connection to vehicle battery without external HV protection or regulation circuitry |
| Calibrated clock system | ±1% HPOSC + software-calibrated IMO/PILO - delivers accurate timing for LIN baud rate generation and ADC sampling without external crystal |
Applications
| Battery Management Unit (BMU) | Start-Stop System Monitor |
|---|---|
Use Scenario: Real-time monitoring of 12 V lead-acid battery health in premium passenger vehicles during engine cranking and accessory load cycles. IC Role / Device Role / Timing Role: Primary battery sensor MCU - acquires voltage, current, temperature, and diagnostic data; executes SOC/SOH algorithms; communicates status via LIN to body control module. Use Value: Enables predictive battery replacement alerts and start-stop enable/disable decisions using on-chip ΔΣ ADC accuracy (≤0.5% full-scale error) and LIN timing compliance. | Use Scenario: Supervising battery state before and after engine restart in micro-hybrid vehicles with regenerative braking and idle-stop functionality. IC Role / Device Role / Timing Role: Dedicated start-stop supervisor - measures pre-cranking voltage sag, post-cranking recovery time, and charge acceptance during alternator recharge phases. Use Value: Prevents unintended engine shutdown by detecting marginal battery capacity using dual ADC channels with simultaneous sampling and hardware accumulation. |
| Commercial Vehicle Battery Diagnostics | Aftermarket Battery Tester |
Use Scenario: On-vehicle diagnostics for Class 8 trucks with dual 24 V battery banks, requiring robust HV tolerance and CAN/LIN gateway compatibility. IC Role / Device Role / Timing Role: High-voltage analog acquisition node - conditions and digitizes battery bank voltages, ground-return currents, and ambient temperature for ECU reporting. Use Value: Supports fault logging and fleet telematics via LIN with ±20 mV voltage measurement resolution at 24 V nominal, enabled by internal HV divider and 20+ bit ADC oversampling. | Use Scenario: Handheld battery testers used by service technicians to evaluate starter battery condition in workshops and roadside assistance. IC Role / Device Role / Timing Role: Embedded measurement engine - performs conductance testing, cranking voltage drop analysis, and reserve capacity estimation using integrated analog resources. Use Value: Reduces test equipment size/cost by integrating precision analog front-end, LIN interface, and safety-certified MCU in single 6 × 6 mm QFN package. |
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 | Standalone 12-cell monitor IC with daisy-chain capability; no embedded MCU or LIN transceiver | Requires external host MCU and LIN PHY; suited for multi-cell lithium systems, not optimized for 12 V lead-acid | Select when monitoring >4 cells or needing cell balancing; not drop-in for single-battery LIN node use cases |
| ADuC7023 | ARM7TDMI-based MCU with 12-bit SAR ADC; no integrated LIN, no HV analog front-end, no AEC-Q100 qualification | Lacks ASIL B compliance, HV input tolerance, and LIN protocol support - requires external components for automotive BMS | Consider only for non-automotive, low-cost industrial battery monitors where functional safety is not required |
Compared with MAX17853 and ADuC7023, CY8C4147LCE-HV423T uniquely integrates ASIL B-compliant MCU, dual high-resolution ΔΣ ADCs, HV input scaling, and LIN 2.2A transceiver in one AEC-Q100-qualified package - eliminating external components and reducing system-level certification effort for 12 V/24 V lead-acid BMS.
Availability
CY8C4147LCE-HV423T is available at Aetrix Electronics and suitable for automotive battery management units, start-stop system monitors, commercial vehicle diagnostics, and aftermarket battery testers requiring stable component supply and long-term automotive lifecycle support.
Supply support for CY8C4147LCE-HV423T 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 ICs, and security solutions, with global R&D and manufacturing infrastructure.
This device belongs to the PSoC™ 4 HVPA-144K product line, designed specifically for high-voltage, functional-safety-aware battery monitoring in automotive 12 V/24 V systems - combining programmable analog/digital blocks with ASIL B hardware architecture.
FAQ
Does CY8C4147LCE-HV423T require an external crystal for LIN communication?
No. The device uses its ±1% high-precision oscillator (HPOSC) as the LIN baud rate clock source, eliminating need for external crystal. Software calibration of IMO/PILO against HPOSC further improves timing accuracy to meet LIN 2.2A jitter requirements without added components.
What is the maximum measurable battery voltage without external resistive dividers?
The internal HV input divider supports direct measurement up to 42 V on the voltage channel (AIN1). This covers full operational range of 12 V (14.4 V float) and 24 V (28.8 V float) lead-acid systems, including load dump transients, without external scaling networks.
How is functional safety implemented in the analog measurement path?
Analog safety is achieved through hardware redundancy: dual independent measurement paths for voltage/current/temperature, backup reference voltage monitoring, and cross-channel diagnostic comparisons. These features are validated per ISO 26262-10:2018E Annex D for ASIL B hardware metrics.
Can the current channel ADC automatically adjust gain during runtime?
Yes. The current channel includes integrated automatic gain control (AGC) that dynamically selects optimal PGA gain based on shunt voltage amplitude. This maintains ≥16-bit effective resolution across wide current ranges (e.g., 0–500 A with 50 µΩ shunt) without firmware intervention.
CY8C4147LCE-HV423T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- PSOC™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, SmartCard, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 8
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 3.6V
- Data Converters:
- A/D 2x16/20b Sigma-Delta
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4147LCE-HV423T FAQ
1.How can I place an order for CY8C4147LCE-HV423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4147LCE-HV423T 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 CY8C4147LCE-HV423T reliable?
The price and inventory of CY8C4147LCE-HV423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4147LCE-HV423T is usually 5 days.
3.What payment methods are accepted for CY8C4147LCE-HV423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4147LCE-HV423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4147LCE-HV423T?
CY8C4147LCE-HV423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4147LCE-HV423T 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 CY8C4147LCE-HV423T?
For technical support, including CY8C4147LCE-HV423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4147LCE-HV423T requirements.
6.How does Aetrix verify that CY8C4147LCE-HV423T is sourced from the original manufacturer or authorized distributors?
All CY8C4147LCE-HV423T 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 CY8C4147LCE-HV423T meets industry standards.
7.What is the process for return or replacement of CY8C4147LCE-HV423T?
All CY8C4147LCE-HV423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4147LCE-HV423T, 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 CY8C4147LCE-HV423T part is unused and in its original packaging.
Return procedure for CY8C4147LCE-HV423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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