![Green printed circuit board with multiple integrated circuits and connectors (no readable text or symbols)](.express-at-datasheet-en-1/7b271af5e988adfd1243edd73867df6d18f11aee60646a6c2622b6278be080b6.jpg)

# Features

Intel® Atom™ processor N270 at 1.6 GHz
Intel® 945GSE / ICH7-M chipset
SODIMM for up to 2 GB DDR2 at 533 MHz
Three PCIe x1 (optional 4 x1 or 1 x4)
High resolution VGA, single/dual 18-bit LVDS and TV-out (SDTV and HDTV)
SATA, IDE (PATA), Gigabit LAN, USB 2.0
Optional 512MB\~8GB IDE-based Solid State Disk

# Specifications

Core System

<table><tr><td rowspan="8">CPU</td><td>BGA type</td></tr><tr><td>Intel® AtomTM N270, FSB 533, 1.6 GHz with 512 KB L2 cache, 2.5 W, on-die primary 32-kB instruction cache and 24 KB write-back data cache</td></tr><tr><td>Hyper-Threading support (2-threads)</td></tr><tr><td>Advanced gunning transceiver logic (AGTL+) bus driver technology</td></tr><tr><td>Enhanced Intel® SpeedStep® Technology</td></tr><tr><td>Source synchronous double-pumped (2x) Address</td></tr><tr><td>Source synchronous quad-pumped (4x) Data</td></tr><tr><td>C0 - C4 low power states supported</td></tr><tr><td>Memory</td><td>Single SODIMM socket memory, up to 2 GB of non-ECC, 400/533 MHz DDR2</td></tr><tr><td>Chipset</td><td>Intel® 945GSE Express Graphic Memory Controller Hub and Intel® I/O Controller Hub 7 Mobile (ICH7-M)</td></tr><tr><td>BIOS</td><td>AMIBIOS®8 with CMOS backup in 8 Mbit SPI flash</td></tr><tr><td>Hardware Monitor</td><td>Supply voltages and CPU temperature</td></tr><tr><td>Watchdog Timer</td><td>Programmable timer ranges to generate RESET</td></tr><tr><td rowspan="4">Expansion Busses</td><td>4 PCI Express x1 (0/1/2 are free, 3 is occupied by GbE LAN) optionally configured as x4</td></tr><tr><td>Serial Digital Video Out (SDVO)</td></tr><tr><td>32-bit PCI 2.3 at 33MHz, supporting 4 bus masters</td></tr><tr><td>LPC, SMBus, I2C</td></tr></table>

Video

<table><tr><td>Chipset</td><td>Intel® Graphics Media Accelerator 950 integrated into 945GSE GMCH supporting dual independent displays</td></tr><tr><td>VGA Interface</td><td>Analog VGA support up to 1600 x 1200</td></tr><tr><td>LVDS Interface</td><td>Single / Dual channel 18-bit (optional 24-bit on carrier through SDVO)</td></tr><tr><td>TV-out</td><td>NTSC/PAL up to 1024x768 resolution supported, HDTV 480p/720p/1080i/1080p modes supported (without Macrovision)</td></tr></table>

Audio

<table><tr><td>Chipset</td><td>Integrated on Intel® I/O Controller Hub 7 Mobile (ICH7-M)</td></tr><tr><td>Audio Codec</td><td>HDA (Azalia) or AC’97 codec on carrier</td></tr></table>

LAN

<table><tr><td>Chipset</td><td>PCIe x1 Realtek RTL8111C</td></tr><tr><td>Interface</td><td>10/100/1000 Mbps</td></tr></table>

Multi I/O

<table><tr><td>Chipset</td><td>Intel® ICH7-M</td></tr><tr><td>IDE (PATA)</td><td>Single IDE channel with UDMA100 with optional 512MB - 8GB IDE-based Solid State Disk</td></tr><tr><td>SATA</td><td>Two port SATA 1.5 Gb/s</td></tr><tr><td>USB</td><td>Up to eight ports USB 2.0</td></tr></table>

# Super I/O

Connected to LPC bus on carrier if needed

TPM

<table><tr><td>Chipset</td><td>Infineon SLB9635TT1.2 (optional)</td></tr><tr><td>Type</td><td>TPM 1.2</td></tr></table>

Power Specifications

<table><tr><td>Input Power</td><td>AT mode (12 V) and ATX mode (12 V and 5 Vsb)</td></tr><tr><td>Power States</td><td>Supports S0, S1, S3, S4, S5</td></tr><tr><td>Power Consumption</td><td>9 W typical (with AtomTM N270 and 1 GB memory)</td></tr></table>

Mechanical and Environmental

<table><tr><td>Operating Temp.</td><td>Standard: 0°C to 60°C</td></tr><tr><td>Storage Temp.</td><td>-20°C to 80°C</td></tr><tr><td>Humidity</td><td>Up to 90% at 60°C</td></tr><tr><td>Shock</td><td>15G peak-to-peak, 11ms duration, non-operation</td></tr><tr><td rowspan="2">Vibration</td><td>Non-operating: 1.88 Grms, 5-500 Hz, each axis</td></tr><tr><td>Operating: 0.5 Grms, 5-500 Hz, each axis</td></tr><tr><td>Form Factor</td><td>COM Express® Type 2, Basic form factor, 95 mm x 125 mm</td></tr><tr><td>Certifications</td><td>CE, FCC</td></tr></table>

Operating Systems

<table><tr><td rowspan="3">Standard Support</td><td>Windows® XP 32-bit</td></tr><tr><td>Windows® Vista 32-bit</td></tr><tr><td>Linux® 2.6.x</td></tr><tr><td rowspan="4">Extended Support</td><td>Embedded XP BSP</td></tr><tr><td>WinCE BSP</td></tr><tr><td>Linux® 2.6.x BSP</td></tr><tr><td>AIDI Library for Win32, WinCE and Linux®</td></tr></table>

Functional Diagram
![Based on the provided block diagram, here is the accurate and concise description of the labeled blocks and their connections:\n\n**Top Section (CPU and GMCH)**\n*   **CPU Block:** Labeled 'CPU' with subtext 'Atom™ N270'. It connects to the GMCH block via a double-headed arrow labeled 'FSB 533 MHz'.\n*   **GMCH Block:** Labeled 'GMCH' with subtext 'Intel® 945GSE'. It contains internal sub-blocks: 'Analog VGA', 'SDTV HDTV', 'Graphic Core 250 MHz', 'LVDS dual 18-bit', 'Single channel SDVO', and 'DDR-2 Memory Controller'.\n    *   **Memory Connection:** Connects to 'DDR2 533 SODIMM socket up to 2 GB' via a double-headed arrow labeled 'Channel A'.\n    *   **Video Outputs:** Connects to 'VGA', 'TV-out', and 'LVDS' blocks on the left vertical bar (AB). Connects to 'SDVO' on the right vertical bar (CD).\n    *   **Downward Connection:** Connects to the ICH block via a double-headed arrow labeled 'DMI'.\n\n**Middle Section (ICH and Peripheral Blocks)**\n*   **ICH Block:** Labeled 'ICH' with subtext 'Intel® ICH7-M'. It contains internal sub-blocks: 'HDA Audio', 'Four PCIe x1 lanes', 'RTC', '2x SATA', '8x USB 2.0', 'SMBus', 'SPI', 'LPC', 'PATA 1x', and 'PCI'.\n    *   **Left Bar (AB) Connections:**\n        *   Connects to 'Audio' via 'HDA Audio'.\n        *   Connects to 'GBe LAN Realtek RTL8111C' via 'PCIe x1 port 3'.\n        *   Connects to 'PCIe x1 lane 0/1/2 (optional 0/1/2/3 for x4)'.\n        *   Connects to 'SATA_0/1'.\n        *   Connects to 'USB_0/1/2/3/4/5/6/7'.\n        *   Connects to 'SMBus'.\n        *   Connects to 'LPC' at the bottom.\n    *   **Right Bar (CD) Connections:**\n        *   Connects to 'IDE' via 'PATA 1x'.\n        *   Connects to 'PCI 33 MHz, v2.3' via 'PCI'.\n        *   Connects to 'Solid State Drive 512MB up to 8 GB' (dashed box) via a dotted line from 'PATA 1x'.\n\n**Bottom Section (System Management)**\n*   **Low-Level Connections:**\n    *   'I²C' connects to 'BC', which connects to 'SMBus' inside the ICH.\n    *   'SMBus' (on left bar) connects to 'LM87', which connects to 'RTC' (inside ICH) via a dotted line.\n    *   'GPIO' (on left bar) connects to 'GPIO'.\n    *   'SPI' (inside ICH) connects to 'BIOS'.\n    *   'LPC' (inside ICH) connects to 'BIOS', 'TPM', and 'LPC header'.\n    *   'LPC' (on left bar) connects to 'LPC header'.](.express-at-datasheet-en-1/90d5e7d175a78fc78da879eb11c95a75ed398e5760ae6c8b17a127e6ffd52e29.jpg)

Ordering Information

Modules

<table><tr><td>Model Number</td><td>Description/Configuration</td></tr><tr><td>Express-AT-N270</td><td>COM Express® module with Intel® AtomTM N270 processor at 1.6 GHz</td></tr><tr><td>Express-AT-N270-4G</td><td>COM Express® module with Intel® AtomTM N270 processor at 1.6 GHz 4GB SSD Solid State Disk</td></tr></table>

Accessories

<table><tr><td>Model Number</td><td>Description/Configuration</td></tr><tr><td colspan="2">Heat Spreaders</td></tr><tr><td>HTS-CAT-B</td><td>Heatspreader for Express-AT (BGA CPU) with threaded standoffs</td></tr><tr><td colspan="2">Passive Heatsinks</td></tr><tr><td>THS-CAT-B</td><td>Low Profile Heatsink for Express-AT (BGA CPU) with threaded standoffs</td></tr></table>
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