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Microchip Technology AT91SAM9CN12-CFU
- Part No.:
- AT91SAM9CN12-CFU
- Manufacturer:
- Microchip Technology
- Category:
- Microprocessors
- Package:
- 247-LFBGA
- Datasheet:
-
AT91SAM9CN12-CFU.pdf
- Description:
- IC MPU SAM9CN 400MHZ 247BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,790
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Product details
Overview
AT91SAM9CN12-CFU from Microchip Technology is a 32-bit Arm926EJ-S™-based embedded MPU with secure boot ROM, 256-bit AES/SHA256 cryptographic accelerators, 128 KB on-chip ROM, 32 KB SRAM, and support for DDR2/LPDDR and NAND Flash. It integrates LCD controller, USB Host/Device (FS), SDIO, 4x USART, 2x UART, 12-channel 10-bit ADC with touchscreen interface, and operates up to 400 MHz core frequency in industrial temperature range.
For engineers reviewing the AT91SAM9CN12-CFU datasheet, AT91SAM9CN12-CFU pinout, AT91SAM9CN12-CFU application, or AT91SAM9CN12-CFU equivalent, this device is selected for secure HMI, industrial gateways, and edge-connected devices requiring hardware-accelerated crypto, resistive touchscreen control, and dual USB connectivity without external level shifters.
Technical Context
The AT91SAM9CN12-CFU implements an Arm926EJ-S core with MMU, 16 KB instruction and 16 KB data caches, and runs at up to 400 MHz. Its system bus operates at 133 MHz with eight DMA channels and distributed memory architecture including 32 KB single-cycle SRAM.
Cryptographic functions are offloaded via dedicated on-chip accelerators supporting FIPS 197-compliant AES-256, FIPS 180-2-compliant SHA1/SHA256, and NIST SP 800-22-compliant TRNG - all with DMA support. Secure Boot ROM and 256 fuse bits for crypto key storage enforce trusted execution from power-on.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Arm926EJ-S 32-bit RISC processor with Thumb® support and MMU for OS compatibility |
| Max Core Frequency | 400 MHz - enables real-time Linux or RTOS execution with deterministic peripheral latency |
| Memory Interfaces | 32-bit EBI supporting DDR2/LPDDR, SDR/LPSDR, static RAM, and MLC/SLC NAND with 24-bit PMECC |
| Crypto Acceleration | Dedicated AES-256/192/128, SHA1/SHA256, and TRNG engines - eliminates software crypto overhead and timing side-channel risks |
| USB Connectivity | Full-speed USB Device + Full-speed USB Host, each with on-chip transceivers - no external PHY required |
| Touchscreen Support | 12-channel 10-bit ADC with 5-wire resistive touchscreen interface and dedicated ADTRG trigger input |
| Package | 217-ball BGA, 0.8 mm pitch - RoHS-compliant, optimized for cost-sensitive industrial PCB layouts |
Pinout & Package
AT91SAM9CN12-CFU is packaged in a 217-ball BGA with 0.8 mm pitch, compliant with JEDEC MO-251. Power domains include VDDCORE (1.0–1.2V), VDDIOP0/VDDIOP1 (1.65–3.6V I/O), VDDANA (3.0–3.6V analog), VDDUSB (3.0–3.6V), and backup domain VDDBU (1.65–3.6V).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA31, PB0–PB18, PC0–PC31, PD0–PD21 | Programmable I/O lines (105 total) | Configurable as GPIO or multiplexed peripherals (USART, SPI, PWM, ADC, etc.); support pull-up/pull-down/Schmitt trigger |
| D0–D31, A0–A25, NCS0–NCS5, NRD, NWR0–NWR3 | External Bus Interface signals | Direct connection to DDR2/LPDDR, NAND Flash, or static memory - enables boot from NAND or parallel NOR |
| HDP/HDM, DDP/DDM | USB analog differential pairs | On-die full-speed transceivers eliminate need for external USB PHY components |
| AD0–AD11, ADVREF, ADTRG | Analog inputs and reference | 12-channel 10-bit ADC supports 5-wire resistive touchscreen with dedicated trigger and voltage reference pins |
| XIN/XOUT, XIN32/XOUT32 | Oscillator inputs/outputs | Supports main 16 MHz crystal and 32.768 kHz RTC crystal - enables precise timekeeping and low-power sleep modes |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot ROM | Immutable boot code enforces chain-of-trust; prevents unauthorized firmware execution at power-on |
| Hardware Crypto Engine | AES-256/SHA256 acceleration with DMA reduces CPU load by >90% vs. software-only crypto in TLS or firmware signing |
| Fuse Bit Configuration | 256-bit crypto key fuses + 64-bit device configuration fuses - enable JTAG disable and forced ROM boot for production security |
| I/O Voltage Flexibility | Independent 1.8 V / 3.3 V operation per I/O bank - eliminates external level shifters in mixed-voltage systems |
| Low-Power Management | Multiple clock gating domains, shutdown controller with 4× 32-bit backup registers, and very slow clock mode - extends battery life in portable HMIs |
Applications
| Industrial HMI Terminal | Secure Edge Gateway |
|---|---|
|
Use Scenario: Touch-enabled operator interface for PLC-controlled machinery with local data logging and remote diagnostics. IC Role / Device Role / Timing Role: Main application processor executing Linux-based UI stack, managing resistive touchscreen ADC, driving 24-bit LCD panel, and handling dual USB for service port and peripheral attachment. Use Value: Integrated LCD controller and crypto engine enable secure OTA firmware updates and tamper-resistant HMI without adding discrete graphics or security ICs. |
Use Scenario: Field-deployed gateway aggregating Modbus/RS485 sensor data and forwarding encrypted payloads to cloud via Ethernet/Wi-Fi bridge. IC Role / Device Role / Timing Role: Central secure processing node performing AES-256 encryption of sensor data, SHA256 signature verification of incoming commands, and USB host control of cellular/Wi-Fi modules. Use Value: Hardware-accelerated crypto ensures sub-10ms encryption latency per packet while maintaining <50 mW active power consumption. |
| Medical Patient Monitor | Smart Energy Meter |
|
Use Scenario: Portable vital-signs monitor with touch UI, ECG signal acquisition, and Bluetooth LE data export. IC Role / Device Role / Timing Role: Real-time data acquisition controller interfacing 10-bit ADC for analog front-end, managing USB Device for configuration, and running lightweight RTOS for deterministic response. Use Value: On-chip TRNG and secure boot meet IEC 62304 Class C requirements for cryptographic key generation and firmware integrity validation. |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, tariff switching, and secure firmware update over PLC or RF link. IC Role / Device Role / Timing Role: Trusted execution environment for metrology calculations, secure storage of billing keys in fuse bits, and SHA256-verified firmware patches loaded via SDIO. Use Value: JTAG disable and forced ROM boot prevent physical debug access, satisfying DLMS/COSEM security profiles for utility-grade meters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded MPU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT91SAM9X35-CU | Lacks secure boot ROM, AES/SHA accelerators, and crypto fuses; includes CAN controller and LCD backlight PWM not present in AT91SAM9CN12-CFU | Suitable for non-security-critical industrial displays where CAN bus integration is required instead of crypto acceleration | Select when CAN interface is mandatory and hardware crypto is unnecessary; verify absence of secure boot requirement in target certification |
| i.MX283 (NXP) | ARM926EJ-S core at 454 MHz, integrated security block (CSU) with OTP memory, but no on-die USB transceivers - requires external PHY | Better suited for high-throughput USB mass storage or networking applications where external PHY integration is acceptable | Choose when higher USB throughput or larger on-chip OTP is needed; accept added BOM cost and layout complexity from external PHY |
Compared with AT91SAM9X35-CU and i.MX283, the AT91SAM9CN12-CFU uniquely delivers certified crypto acceleration, secure boot, and dual USB transceivers in a single 217-ball BGA - reducing bill-of-materials count and simplifying compliance for regulated edge devices.
Availability
AT91SAM9CN12-CFU is available at Aetrix Electronics and suitable for industrial HMI terminals, secure edge gateways, and medical patient monitors requiring stable component supply across extended product lifecycles.
Supply support for AT91SAM9CN12-CFU 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
Microchip Technology is a global semiconductor company delivering microcontrollers, analog, FPGA, and security solutions with emphasis on reliability and long-term support.
The SAM9CN family targets secure, cost-optimized embedded applications requiring hardware-enforced trust, rich peripheral integration, and industrial temperature operation - specifically designed for HMI, gateway, and IoT edge nodes.
FAQ
What is the maximum operating frequency of the AT91SAM9CN12-CFU core?
The AT91SAM9CN12-CFU features an Arm926EJ-S core rated for operation up to 400 MHz. This frequency is achievable under industrial temperature conditions (−40°C to +85°C) with proper power supply regulation and thermal management. The internal 133 MHz system bus and multi-layer AHB matrix sustain bandwidth for concurrent peripheral access without bottlenecking the core.
Does the AT91SAM9CN12-CFU support booting from NAND Flash?
Yes, the AT91SAM9CN12-CFU supports NAND Flash boot via its integrated MLC/SLC NAND controller with programmable 24-bit PMECC. The secure Boot ROM includes NAND boot loader functionality, enabling direct execution from NAND without external boot memory - critical for field-upgradable and tamper-resistant deployments.
How does the cryptographic acceleration in AT91SAM9CN12-CFU differ from software-based implementations?
The AT91SAM9CN12-CFU integrates dedicated hardware AES-256, SHA1/SHA256, and TRNG engines with DMA support - enabling cryptographic operations independent of CPU cycles. This eliminates timing side-channel vulnerabilities, achieves deterministic latency (<10 µs per AES block), and frees the Arm926EJ-S core for application tasks, unlike software crypto which consumes >30% CPU at 400 MHz for TLS handshake.
What package options are available for the AT91SAM9CN12-CFU?
The AT91SAM9CN12-CFU is offered exclusively in a 217-ball BGA package with 0.8 mm ball pitch (JEDEC MO-251 compliant). This differs from the SAM9N12/SAM9CN11 variants, which also offer a 247-ball BGA option. The 217-ball variant provides optimal PCB area efficiency and thermal performance for industrial HMI and gateway designs.
Can the AT91SAM9CN12-CFU drive a 24-bit RGB LCD panel directly?
Yes, the AT91SAM9CN12-CFU's integrated LCD controller supports up to 24-bit parallel RGB output (LCDDAT0–LCDDAT23) with programmable pixel clock (LCDPCK), synchronization signals (LCDVSYNC/LCDHSYNC), and display enable (LCDDEN). It requires no external timing generator or frame buffer - enabling direct connection to standard industrial LCD modules.
AT91SAM9CN12-CFU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 247-LFBGA
- Series:
- SAM9CN
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- ARM926EJ-S
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 400MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- LPDDR, LPDDR2, DDR2, SDR, SRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- LCD, Touchscreen
- Ethernet:
- -
- SATA:
- -
- USB:
- USB 2.0 (2)
- Voltage - I/O:
- 1.8V, 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 247-BGA (10x10)
- Additional Interfaces:
- EBI/EMI, I2C, MMC/SD/SDIO, SPI, SSC, UART/USART
AT91SAM9CN12-CFU FAQ
1.How can I place an order for AT91SAM9CN12-CFU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT91SAM9CN12-CFU 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 AT91SAM9CN12-CFU reliable?
The price and inventory of AT91SAM9CN12-CFU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT91SAM9CN12-CFU is usually 5 days.
3.What payment methods are accepted for AT91SAM9CN12-CFU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT91SAM9CN12-CFU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT91SAM9CN12-CFU?
AT91SAM9CN12-CFU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT91SAM9CN12-CFU 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 AT91SAM9CN12-CFU?
For technical support, including AT91SAM9CN12-CFU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT91SAM9CN12-CFU requirements.
6.How does Aetrix verify that AT91SAM9CN12-CFU is sourced from the original manufacturer or authorized distributors?
All AT91SAM9CN12-CFU 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 AT91SAM9CN12-CFU meets industry standards.
7.What is the process for return or replacement of AT91SAM9CN12-CFU?
All AT91SAM9CN12-CFU units undergo pre-shipment inspection (PSI). If there is an issue with AT91SAM9CN12-CFU, 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 AT91SAM9CN12-CFU part is unused and in its original packaging.
Return procedure for AT91SAM9CN12-CFU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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