![Green printed circuit board with integrated circuits and connectors (no readable text or symbols)](.express-atc-datasheet-en-1/eb0efea59a860a0e32e5579f0f2cd6bd5ce5c492141980619a68b480382200c2.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 1GB \~ 8GB IDE-based Solid State Drive

# 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 up to 2 GB of non-ECC, 400/533 MHz DDR2 memory</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 one PCIe 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&#x27;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 1GB ~ 8GB IDE-based Solid State Drive</td></tr><tr><td>SATA</td><td>Two ports 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>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, Compact form factor, 95 mm x 95 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 description of the blocks and connections:\n\n**Top Section**\n*   **CPU (Atom™ N270):** Connected to the **GMCH** block via a link labeled **FSB 533 MHz**.\n*   **GMCH (Intel® 945GSE):** Contains internal blocks for **Analog VGA**, **Graphic Core 250 MHz**, **SDTV HDTV**, **LVDS dual 18-bit**, **Single channel SDVO**, and **DDR-2 Memory Controller**.\n    *   Connected to **DDR2 533 SODIMM socket up to 2 GB** via **Channel A**.\n    *   Connected to the **CD** vertical bar via a link labeled **SDVO** (originating from Single channel SDVO).\n    *   Connected to the **ICH** block via a link labeled **DMI**.\n\n**Middle/Lower Section (ICH)**\n*   **ICH (Intel® ICH7-M):** Contains internal blocks for **HDA Audio**, **Four PCIe x1 lanes**, **RTC**, **SMBus**, **SPI**, **PATA 1x**, **PCI**, **LPC**, **2x SATA**, and **8x USB 2.0**.\n    *   Connected to the **Solid State Drive 512MB up to 8 GB** via a dotted line.\n    *   Connected to the **CD** vertical bar via **IDE** (from PATA 1x) and **PCI 33 MHz, v2.3** (from PCI).\n    *   Connected to **TPM**, **BIOS**, and **LPC header** via **LPC**.\n    *   Connected to **BIOS** via **SPI**.\n\n**Left Side (AB Bar) Connections**\n*   The vertical bar labeled **AB** connects to various peripherals and interfaces:\n    *   **Audio** (from ICH HDA Audio).\n    *   **GbE LAN Realtek RTL8111C** (via PCIe x1 port 3).\n    *   **PCIe x1 lane 0/1/2 (optional 0/1/2/3 for x4)**.\n    *   **SATA_0/1**.\n    *   **USB_0/1/2/3/4/5/6/7**.\n    *   **I²C** connects to block **BC**.\n    *   **SMBus** connects to block **LM87**.\n    *   **GPIO** connects to block **GPIO**.\n    *   **LPC** (bottom line) connects to the ICH LPC block.\n\n**Right Side (CD Bar)**\n*   The vertical bar labeled **CD** serves as a connection point for:\n    *   **SDVO** (from GMCH).\n    *   **IDE** (from ICH PATA 1x).\n    *   **PCI 33 MHz, v2.3** (from ICH PCI).](.express-atc-datasheet-en-1/11d9deba7d5d9d8a6de8b4831983edd8ffa9970f7b627075f78cc861e9b805bf.jpg)

# Ordering Information

Modules

<table><tr><td>Model Number</td><td>Description/Configuration</td></tr><tr><td>Express-ATC-N270</td><td>Compact COM Express® module with Intel® AtomTM N270 processor at 1.6 GHz</td></tr><tr><td>Express-ATC-N270-4G</td><td>Compact COM Express® module with Intel® AtomTM N270 processor at 1.6 GHz with 4GB SSD Solid State Disk</td></tr><tr><td>Express-ATC-N270-8G</td><td>Compact COM Express® module with Intel® AtomTM N270 processor at 1.6 GHz with 8GB 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-ATC-B</td><td>Heatspreader for Express-ATC (BGA CPU) with threaded standoffs</td></tr><tr><td colspan="2">Passive Heatsinks</td></tr><tr><td>THS-ATC-B</td><td>Low Profile Heatsink for Express-ATC (BGA CPU) with threaded standoffs</td></tr></table>
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