Up to 2 GB (ECC) DDR3 Ram, 3 M-Module Slots, 2 Gigabit Ethernet

Manufacturer: duagon MEN

The A21B is a Freescale™ QorIQ™ based single-board computer for embedded industrial applications. The SBC features full VME64 support and can be used as a master or a slave in a VMEbus environment. The A21B provides 1 MB local dual-ported SRAM for slave access and communication between the local CPU and another VMEbus master.

The CPU card comes with a single-core P1013 or dual-core P1022 QorIQ™ processor with up to 1.067 GHz clock frequency and a serial communication architecture. With two Gigabit Ethernet ports and one RS232 COM at the front, and DDR3 SDRAM with ECC, Flash and FRAM, the board offers the crucial basics of an industrial computer. To satisfy your needs for mass storage, you can use microSD™ cards and mSATA plug-in modules.

In addition, the A21B can be equipped with up to three M-Module mezzanine cards supporting both front I/O and rear I/O. M-Modules are ideal for real-world I/O like analog/binary process and instrumentation input/output. The modular combination of I/O functionality on a single-board computer allows to build up tailored control systems which appear as customized solutions based on standard components.

Its sister card, the A21C, offers two PMC/XMC slots instead of M-Modules, for different I/O requirements.

Where there's a need for even more or other I/O, the A21B also includes a custom mezzanine-card option that reduces the board by one M-Module but provides interfaces like USB 2.0, COM or even custom I/O controlled by the onboard FPGA. The mezzanine card is always an entirely customized adapter PCB, including front I/O, and makes the A21B a semi-custom solution.

The A21B supports operation in a -40°C to +85°C temperature range, and the board withstands shock and vibration.

The CPU board is supported by the U-Boot Universal Boot Loader, which can be used for bootstrapping operating systems, for hardware testing, or for debugging applications without running any operating system.


CPU SpecFreescale™ QorIQ™ P1022 or P1013, dual or single core
• 600 MHz, 800 MHz or 1.067 GHz
• Two/one high-performance Power Architecture e500v2 cores
• Double precision floating point support and signal processing engine (SPE) APU
• 32 KB L1 instruction cache and 32 KB L1 data cache per processor core
Memory256 KB L2 cache with ECC
Up to 2 GB SDRAM system memory
• Soldered
• DDR3 with ECC support
• 333 MHz memory bus clock frequency (667 MT/s, 5.33 GB/s data rate)
Up to 64 MB boot/program Flash
128 KB non-volatile FRAM
Serial EEPROM 4 kbits for factory settings
• Two 10/100/1000Base-T Ethernet channels at the front
• RJ45 connectors at front panel
• Two front LEDs for each port to signal LAN link and activity status
StoragemicroSD™ card slot
• Directly accessible on the board
• Connected to SDHC controller

mSATA disk slot
• Directly accessible on the board (via small adapter card)
• Connected via one SATA channel
SerialOne RS232 UART (COM1)
• RJ45 connector at front panel
• Data rates up to 230.4 kbit/s
• 16-byte transmit/receive buffer
• Handshake lines: CTS, RTS
Front I/OTwo Ethernet (RJ45)
One RS232 COM (RJ45)
M-Module front I/O if populated
Rear I/OM-Module 0, 1 and 2
OtherReal-time clock, buffered by a supercapacitor or battery (optional)
• Data retention of supercapacitor: typically up to one week
Voltage monitor and temperature sensor
Reset button and status LEDs at the front panel
BIOSU-Boot Universal Boot Loader


• Compliant with VME64 Specification
• Slot-1 function with auto-detection
• Master: D08(EO):D16:D32:D64:A16:A24:A32:ADO:BLT:RMW
• Slave: D08(EO):D16:D32:D64:A16:A24:A32:BLT:RMW
• 1 MB shared fast SRAM
• Mailbox functionality
• Interrupter D08(O):I(7-1):ROAK
• Interrupt handler D08(O):IH(7-1)
• Single level 3 fair requester
• Single level 3 arbiter
• Bus timer
• Location Monitor
• Performance
• • Coupled read/write D32 non-block transfer rate tbd. MB/s
• • DMA read/write D32 BLT transfer rate tbd. MB/s
• • DMA read/write D64 MBLT transfer rate tbd. MB/s
ElectricalSupply voltage/power consumption:
• +5 V (-3%/+5%), 1.3 A typ.
• +3.3 V (-3%/+5%), 1 A typ.
• ±12 V (-5%/+5%), only provided for mezzanines that need 12 V
MechanicalDimensions: standard double Eurocard, 233.3 mm x 160 mm
Conformal CoatingConformal coating on request
TemperatureTemperature range (operation):
• -40..+85°C (screened)
• Airflow: min. 1.0 m/s
Temperature range (storage): -40..+85°C
HumidityRelative humidity (operation): max. 95% non-condensing
Relative humidity (storage): max. 95% non-condensing
Weight(without mezzanines): 428 g
Altitude-300 m to +3000 m
Vibration(sinusoidal): 1 g, 10..150 Hz
ShockShock: 50 m/s², 30 ms (EN 61373)
MTBF346 417 h @ 40°C according to IEC/TR 62380 (RDF 2000)
Safety/CertificationPCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
EMCEN 55022 (radio disturbance)
IEC 61000-4-2 (ESD)
IEC 61000-4-3 (electromagnetic field immunity)
IEC 61000-4-4 (burst)
IEC 61000-4-5 (surge)
IEC 61000-4-6 (conducted disturbances)
Warranty2 Years



A21B, Freescale™ QorIQ™ single-core P1013, 800 MHz, 1 GB DDR3 ECC SDRAM, 32 MB Flash, 3 M-Module slots, -40 to +85°C screened
A21C, Freescale™ QorIQ™ single-core P1013, 800 MHz, 1 GB DDR3 ECC SDRAM, 32 MB Flash, 2 PMC/XMC slots, -40 to +85°C screened

RS232 interface cable RJ45 to 9-pin D-Sub (1 COM to 1 COM), 2m

25 mounting screw sets to fix PMC/XMC modules on carrier boards
Recab UK
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