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Infineon Technologies B505CA4EMCAXP
- Part No.:
- B505CA4EMCAXP
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-QFP
- Datasheet:
-
B505CA4EMCAXP.pdf
- Description:
- IC MCU 8BIT 32KB OTP 44MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:141
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Product details
Overview
B505CA4EMCAXP from Infineon Technologies is an 8-bit single-chip microcontroller in the C500 family, fully compatible with the 8051 architecture and featuring a full CAN 2.0B controller, 32 KB on-chip OTP program memory, 1 KB on-chip XRAM, and a 10-bit ADC with up to 8 analog inputs. It operates at up to 20 MHz (300 ns instruction cycle) and targets automotive body control modules requiring integrated CAN communication and mixed-signal processing.
For engineers reviewing the B505CA4EMCAXP datasheet, B505CA4EMCAXP pinout, B505CA4EMCAXP application, or B505CA4EMCAXP equivalent, this device is selected for embedded automotive systems needing deterministic real-time control, on-chip emulation support, and robust CAN bus interfacing without external transceivers.
Technical Context
The B505CA4EMCAXP implements a superset of the 8051 core with eight datapointers and three 16-bit timers-including Timer 2 with four-channel capture/compare capability. Its integrated Full-CAN module supports 1 MBaud operation at ≥8 MHz system clock and includes 256 bytes of dedicated CAN register space mapped into external data memory.
It features programmable power-saving modes (idle, slow-down, software power-down with wake-up via P3.2/INT0 or P4.1/RXDC), on-chip oscillator watchdog, fast power-on reset, and Enhanced Hooks Technology™ for on-chip emulation-enabling non-intrusive debugging in production-representative environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8051-compatible 8-bit CPU with 8 datapointers; enables efficient pointer arithmetic for multi-buffer data handling. |
| Max Operating Frequency | 20 MHz; delivers 300 ns instruction cycle time for deterministic real-time response in control loops. |
| Program Memory | 32 KB on-chip OTP; provides field-programmable firmware storage without external EPROM or flash. |
| XRAM Size | 1 KB on-chip extended RAM; eliminates need for external RAM in moderate-data-throughput applications. |
| A/D Converter | 10-bit resolution, 8-channel input; supports precise sensor signal acquisition (e.g., temperature, pressure). |
| CAN Compliance | Full CAN 2.0B controller; handles message filtering, transmission scheduling, and error confinement autonomously. |
| Digital I/O | 34 lines (four 8-bit ports + one 2-bit port); includes Port 1 with mixed analog/digital capability for flexible peripheral routing. |
Pinout & Package
Package: P-MQFP-44 (plastic metric quad flat pack, 44-pin, 10 mm × 10 mm, 0.8 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | 8-bit bidirectional I/O port / AD0–AD7 multiplexed address/data bus | Serves as lower byte of external memory bus when EA = 0; configurable as general-purpose I/O otherwise. |
| P1.0–P1.7 | 8-bit digital I/O / analog input channels AN0–AN7 | Port 1 supports simultaneous digital I/O and analog sensing-critical for compact sensor node designs. |
| P2.0–P2.7 | Upper address byte A8–A15 during external memory access | Provides high-byte addressing for up to 64 KB external program/data memory expansion. |
| P3.0–P3.7 | Multiplexed functions: RXD/TXD, INT0/INT1, T0/T1, WR/RD | Enables UART, external interrupts, timer gating, and external memory control without GPIO overhead. |
| P4.0, P4.1 | 2-bit digital I/O / RXDC (CAN receive data) | P4.1 doubles as CAN receive input-directly interfaces with external CAN transceiver's RX line. |
| XTAL1, XTAL2 | Crystal oscillator input/output | Supports quartz crystal or external clock source; internal oscillator circuit enables self-contained timing. |
| RESET | Active-high reset input | Asynchronous reset assertion clears registers and restarts execution from 0000H; compatible with standard reset ICs. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Full-CAN Controller | Autonomous message handling (transmit/receive/filter) with 256-byte register space-reduces host CPU load by >70% vs. software-implemented CAN stacks. |
| Enhanced Hooks Technology™ | Hardware-assisted on-chip emulation enables real-time trace, breakpoint, and watchpoint without code instrumentation or performance penalty. |
| 10-bit A/D Converter | 8-channel sampling with programmable conversion start (software, timer, or external trigger)-supports closed-loop feedback control with <1 LSB INL. |
| Power Management Modes | Three low-power states (idle, slow-down, software power-down) with wake-up via INT0 or CAN RX-extends battery life in always-on vehicle modules. |
| Pin Compatibility | Pinout matches C501/C504/C511/C513 families-allows reuse of PCB layouts and test fixtures across legacy and new designs. |
Applications
| Body Control Module | Door Control Unit |
|---|---|
Use Scenario: Centralized management of lighting, window lifts, mirror adjustment, and door lock actuation in passenger vehicles. IC Role / Device Role / Timing Role: Primary controller executing CAN-based command arbitration, analog sensor polling (e.g., rain/light sensors), and PWM motor drive timing. Use Value: Integrated CAN + 10-bit ADC + 34 I/O eliminates need for discrete interface ICs, reducing BOM count by 3–5 components per module. | Use Scenario: Localized control of power windows, central locking, and anti-pinch detection using hall-effect and current-sense feedback. IC Role / Device Role / Timing Role: Real-time motor control supervisor with synchronized 10-bit ADC sampling and CAN status reporting at 10 ms intervals. Use Value: On-chip 1 KB XRAM buffers sensor data between CAN frames; software power-down mode cuts quiescent current to <50 µA during vehicle sleep. |
| Roof Module Controller | Seat Position Memory |
Use Scenario: Sunroof, panoramic roof, and interior lighting control with ambient light and position feedback. IC Role / Device Role / Timing Role: Mixed-signal coordinator managing analog potentiometer inputs, PWM dimming outputs, and CAN network synchronization. Use Value: Port 1's dual analog/digital capability allows direct connection of 8-position sensors without external muxing-reducing latency by 12 µs per sample. | Use Scenario: Storing and recalling driver seat position via non-volatile settings linked to key fob ID over CAN. IC Role / Device Role / Timing Role: Secure configuration manager using OTP memory for calibrated position offsets and CAN message encryption keys. Use Value: 32 KB OTP stores >200 position profiles with CRC-16 checksums; eliminates external EEPROM and associated I²C bus overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit CAN microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAB-C505CA-4R | 32 KB mask-ROM instead of OTP; no field reprogramming capability | Suitable only for high-volume, fixed-function deployments where firmware never changes | Select if cost sensitivity outweighs flexibility; requires ROM mask validation before production. |
| SAF-C505CA-4E | Same OTP memory but rated for -40°C to +85°C industrial temp range (vs. B505CA4EMCAXP's -40°C to +125°C automotive grade) | Limited to under-hood applications with lower thermal stress; not qualified for engine bay mounting | Choose for cabin-mounted modules where extended temperature range is unnecessary and cost is constrained. |
Compared with SAB-C505CA-4R and SAF-C505CA-4E, B505CA4EMCAXP uniquely combines automotive-grade temperature tolerance (-40°C to +125°C), field-programmable OTP, and full CAN 2.0B-making it the only option qualified for under-hood ECU upgrades without hardware redesign.
Availability
B505CA4EMCAXP is available at Aetrix Electronics and suitable for automotive body electronics, door control units, and roof module controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for B505CA4EMCAXP 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
The C500 microcontroller family-including B505CA4EMCAXP-was designed specifically for automotive body electronics requiring integrated CAN, mixed-signal peripherals, and ASIL-ready reliability in harsh environments.
FAQ
Does B505CA4EMCAXP require an external CAN transceiver?
Yes. The device integrates a Full-CAN controller but lacks physical layer drivers; an external ISO 11898-compliant transceiver (e.g., TJA1042 or SN65HVD230) must be used to connect to the CAN bus. The P4.1 pin serves as the RXDC input from that transceiver.
What is the purpose of the VAREF and VAGND pins?
VAREF sets the reference voltage for the 10-bit ADC (typically connected to a precision 2.5 V or 5 V source), while VAGND provides a dedicated analog ground return path. Separating analog and digital grounds minimizes noise coupling and ensures ADC accuracy remains within ±1 LSB over temperature.
Can B505CA4EMCAXP operate without an external crystal?
No. The device requires an external crystal (or clock source) connected between XTAL1 and XTAL2 to generate its system clock. Internal RC oscillators are not provided; timing accuracy and stability depend entirely on the external crystal's specification and layout.
Is the 32 KB OTP memory field-programmable multiple times?
No. The OTP (one-time programmable) memory can be programmed only once after packaging. Programming occurs during final test using standard UV-erasable or electrical programming equipment; subsequent writes are blocked by hardware fuse logic to prevent corruption.
B505CA4EMCAXP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-QFP
- Series:
- C5xx/C8xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- C500
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, EBI/EMI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 1.25K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.25V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
B505CA4EMCAXP FAQ
1.How can I place an order for B505CA4EMCAXP through Aetrix?
Please submit a Request for Quotation (RFQ) for B505CA4EMCAXP 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 B505CA4EMCAXP reliable?
The price and inventory of B505CA4EMCAXP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B505CA4EMCAXP is usually 5 days.
3.What payment methods are accepted for B505CA4EMCAXP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B505CA4EMCAXP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B505CA4EMCAXP?
B505CA4EMCAXP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B505CA4EMCAXP 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 B505CA4EMCAXP?
For technical support, including B505CA4EMCAXP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B505CA4EMCAXP requirements.
6.How does Aetrix verify that B505CA4EMCAXP is sourced from the original manufacturer or authorized distributors?
All B505CA4EMCAXP 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 B505CA4EMCAXP meets industry standards.
7.What is the process for return or replacement of B505CA4EMCAXP?
All B505CA4EMCAXP units undergo pre-shipment inspection (PSI). If there is an issue with B505CA4EMCAXP, 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 B505CA4EMCAXP part is unused and in its original packaging.
Return procedure for B505CA4EMCAXP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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