Comprehensive Product Summary: DOM‑0512M‑44V‑426 (512 MB Disk On Module, 44‑Pin Vertical)

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### 1. Product Overview

Product Name: Disk On Module (DOM)
Model Number: DOM‑0512M‑44V‑426
Series: DOM‑2000 / FFD‑2000 Series (Industrial Grade Flash Disk Storage Device)
Article Number: DOM‑0512M‑44V‑426
Manufacturer: Power Quotation International Co., Ltd. (PQI) – IC Storage Specialist
Trademark: DiskOnModule ™

The DOM‑0512M‑44V‑426 is a 512 MB solid‑state flash storage module designed as a direct IDE hard‑disk replacement. It uses a 44‑pin vertical IDE interface and NAND‑type flash memory, providing non‑volatile, shock‑resistant, and low‑power storage for embedded and industrial systems.

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### 2. Key Features

- True IDE Compatibility: Fully compliant with the ATA/IDE interface standard; functions as a standard hard disk without additional drivers.
- Compact Module Design: Vertical 44‑pin form factor minimizes footprint for space‑constrained embedded systems.
- Industrial Grade Reliability: Operating temperature range 0 °C to +70 °C; non‑operating –20 °C to +85 °C.
- NAND Flash Technology: High‑density, non‑volatile NAND flash with integrated ECC, wear‑leveling, and defect‑block management.
- Plug‑and‑Play Operation: Recognized automatically by BIOS as an IDE drive; no special software required.
- Low Power Consumption: Typical read 21 mA, write 28 mA, sleep 0.3 mA at +5 V DC.
- High Shock and Vibration Tolerance: No moving parts; ideal for harsh environments.
- Flexible Master/Slave Configuration: Selectable via jumper (JP1) on 44‑pin models.
- Long Service Life: MTBF 300 000 rewrite cycles @ 25 °C; data retention ≥ 10 years.
- Broad OS Support: Compatible with Windows 95/98/NT/2000/CE, Embedded NT, QNX, Linux, and other IDE‑based systems.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Capacity | 512 MB |
| Flash Type | NAND Flash Memory |
| Interface | 44‑pin IDE (2.00 mm pitch) |
| Form Factor | Vertical DOM (Plain Form) |
| Model Code Definition | FDxxx‑426P / FDxxx‑426PA (44‑pin plain form DOM, with or without housing) |
| Dimensions | Approx. 33 mm (W) × 51 mm (L) × 6.3 mm (H) |
| Weight | < 20 g (typical) |
| Operating Temperature | 0 °C to +70 °C |
| Storage Temperature | –20 °C to +85 °C |
| Humidity | 5 % – 95 % (non‑condensing) |
| Shock Resistance | 150 G (2.2 ms half‑sine) |
| Vibration Resistance | 15 G p‑p max |
| MTBF | 300 000 rewrite cycles @ 25 °C |
| Power Supply | +3.3 V ± 10 % / +5.0 V ± 10 % |
| Power Consumption | Read 21 mA (typ.), Write 28 mA (typ.), Sleep 0.3 mA (typ.) |
| Data Retention | ≥ 10 years |
| Sector Size | 512 bytes |
| ECC Capability | 1‑word (2 bytes) error correction, 2‑word error detection |
| Interface Mode | PIO Mode 2 (8.3 MB/s burst rate) |
| Average Seek Time | < 0.1 ms |
| Random Read Time | 0.3 ms (typ.) |
| Random Write Time | 9.67 ms (typ.) |
| Sequential Read Time | 0.3 ms (typ.) |
| Sequential Write Time | 9.71 ms (typ.) |
| Media Transfer Rate (Read) | 2.5 MB/s (typ.) |
| Media Transfer Rate (Write) | 1.2 MB/s (typ.) |
| Average Data Transfer Rate | 6 MB/s (typ.) |
| Host Burst Transfer Rate | 8.3 MB/s (typ., PIO Mode 2) |

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### 4. Functionality

The DOM‑0512M‑44V‑426 operates as a solid‑state IDE drive. It connects directly to a 44‑pin IDE socket, integrating both data and power lines. The device emulates a conventional hard disk at the hardware level, allowing BIOS and operating systems to detect it automatically.

Operation Principle:
- Data is stored in NAND flash arrays managed by an internal DSP‑based controller.
- The controller handles wear‑leveling, ECC, and defect‑block substitution to extend endurance.
- The module supports standard ATA commands for read/write, formatting, and diagnostics.

Use Cases / Applications:
- Embedded industrial controllers
- Data acquisition and measurement systems
- Telecommunications equipment and routers
- Kiosks, POS terminals, and ticket machines
- Military and transport electronics
- Set‑top boxes and network appliances
- Portable and hand‑held computers
- Automotive and GPS systems

Compatibility:
- Works with any IDE/ATA host supporting 44‑pin 2.0 mm interface.
- Fully compatible with BIOS auto‑detection and standard partitioning utilities (FDISK, FORMAT).
- Supports CHS and LBA addressing modes.

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### 5. Components & Accessories

Included Items:
- DOM‑0512M‑44V‑426 module (44‑pin vertical mount)
- Optional protective housing (model FDxxx‑426PA)

Optional Accessories:
- 44‑pin to 40‑pin IDE adapter cable (FDA‑04C / FDA‑44C)
- Power adapter for external +5 V supply (if required)
- Mounting bracket for vertical installation

Connectors:
- 44‑pin IDE male connector (2.00 mm pitch) integrating data and power pins.
- Jumper JP1 for Master/Slave selection (on 44‑pin models).

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### 6. Installation & Setup

Requirements:
- Host system with 44‑pin IDE interface (2.00 mm pitch).
- BIOS support for IDE auto‑detection or manual CHS configuration.
- +5 V DC power supply (through IDE pin 20 or external adapter).

Mounting Options:
- Vertical mount directly onto motherboard IDE header.
- Optional housing for mechanical protection in industrial enclosures.

Configuration Procedure:
1. Power off the system and ground yourself to avoid ESD.
2. Align pin 1 (marked by triangle on connector) with pin 1 on the IDE socket.
3. Insert the DOM firmly into the IDE connector.
4. Configure Master/Slave mode via JP1: ON = Master (default), OFF = Slave.
5. Power on the system and enter BIOS setup.
6. Enable IDE auto‑detection or manually enter CHS values (497 cylinders, 63 sectors, 32 heads for 512 MB).
7. Save settings and reboot.
8. Partition and format the drive using standard DOS utilities (FDISK, FORMAT C:/S).

Cautions:
- Handle module by edges only; avoid bending pins.
- Ensure correct orientation to prevent damage to IDE connector.
- Use both hands to remove the module to avoid mechanical stress.

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### 7. Performance & Capabilities

| Metric | Typical Value | Notes |
|-------------|------------------|------------|
| Read Speed | 2.5 MB/s | Sequential read performance |
| Write Speed | 1.2 MB/s | Sequential write performance |
| Average Transfer Rate | 6 MB/s | Host to media average |
| Burst Rate | 8.3 MB/s | PIO Mode 2 maximum |
| Seek Time | < 0.1 ms | Solid‑state access |
| Random Read Latency | 0.3 ms | Typical value |
| Random Write Latency | 9.67 ms | Typical value |
| Sequential Read Latency | 0.3 ms | Typical value |
| Sequential Write Latency | 9.71 ms | Typical value |
| Power Read Mode | 21 mA @ 5 V | 105 mW typical |
| Power Write Mode | 28 mA @ 5 V | 140 mW typical |
| Sleep Mode | 0.3 mA @ 5 V | 1.5 mW typical |
| Endurance | 300 000 rewrite cycles | At 25 °C |
| Data Retention | ≥ 10 years | Non‑volatile storage |

Limitations:
- Designed for industrial and embedded applications with moderate write frequency.
- Not optimized for high‑throughput server workloads.
- Capacity limited to 512 MB for 44‑pin vertical form factor.

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### 8. Standards & Compliance

- Interface Standard: ATA/IDE (ANSI X3.221‑1994, ATA‑2 PIO Mode 2)
- Electrical Compliance: +3.3 V / +5 V DC tolerance ± 10 %
- Environmental Compliance: Industrial temperature grade (0 °C – 70 °C)
- Shock & Vibration: Complies with industrial specifications (150 G shock, 15 G vibration)
- EMC & Safety: Designed to meet CE and FCC Class B requirements (for embedded use)
- RoHS Status: Compliant with lead‑free manufacturing standards (when specified by PQI)
- Quality Assurance: Manufactured under ISO 9001 certified processes

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### 9. Additional Information

Warranty:
- Standard manufacturer warranty (typically 1 year limited hardware warranty).
- Covers defects in materials and workmanship under normal use.

Technical Support:
- PQI provides technical documentation, installation guides, and firmware updates upon request.
- Support available through authorized distributors and PQI technical service centers.

Maintenance:
- No moving parts or user‑serviceable components.
- Periodic data backup recommended for critical applications.
- Avoid exposure to electrostatic discharge and excessive heat.

Firmware & Updates:
- Internal controller firmware manages ECC, wear‑leveling, and bad‑block replacement.
- Firmware updates are rarely required and performed only by authorized service centers.

Product Lifecycle Status:
- DOM‑0512M‑44V‑426 listed as “On‑going product” in PQI catalog (2002 release).
- Successor models available in DG Series (16 MB – 1.5 GB capacities).

Trademark Notice:
DiskOnModule ™ and related marks are registered trademarks of Power Quotation International Co., Ltd.
All other product names are the property of their respective owners.

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### Summary

The DOM‑0512M‑44V‑426 is a robust, industrial‑grade 512 MB flash storage module engineered for embedded and industrial computing environments requiring reliable, low‑power, and vibration‑resistant storage. Its 44‑pin vertical IDE interface ensures seamless integration with standard ATA hosts, while NAND flash technology provides fast access times and long‑term data integrity.

With integrated ECC, wear‑leveling, and defect‑block management, the DOM‑0512M‑44V‑426 delivers consistent performance and durability across a wide temperature range. It is ideally suited for applications such as industrial control, telecommunications, kiosks, and portable embedded systems where mechanical hard drives are impractical.

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End of Technical Summary