iMX233-OLINUXINO-MICRO Olimex Ltd., iMX233-OLINUXINO-MICRO Datasheet - Page 9

• Manufacturer Part Number: iMX233-OLINUXINO-MICRO
• Description: Development Boards & Kits - ARM OLINUXINO i.MX233 MICRO LINUX SBC
• Manufacturer: Olimex Ltd.

Specifications of iMX233-OLINUXINO-MICRO

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: MCIMX233CAG4C
• Core: ARM926EJ-S
• Interface Type: Ethernet, USB
• Operating Supply Voltage: 5 V
• Description/function: Single Board Linux Computer i.MX233 ARM926J at 454 MHz with UB host, TV-out (PAL / NTSC), 2x30 GPIOs, SD
• Dimensions: 76.2 mm x 43.2 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Tradename: OLinuXino

OLIMEX© 2012
OLinuXino-MICRO user's manual
2.4 Powering the board
The board is powered either via the PWR jack or via a battery. It should be supplied by 5V source
with maximum current of 1A from the power jack.
All measures below are taken at 5V.
If measuring the current consumption it should be around 0.06A before initializing all the
peripherals.
IMPORTANT! We discovered a situation which might leave some of the SD cards (iMX233-
OLinuXino-SD) in unrecoverable state when powering OLinuXino-MICRO. The problem
might occur if two specific conditions are met simultaneously:
1)Plugged iMX233-OLinuXino-SD micro SD card with holographic sticker on its back side
(some of the cards we have distributed are from a brand that places holographic sticker on
their backs, the other half lack such a sticker)
2)Plugged USB-SERIAL-CABLE-F at the moment when powering the board
If you happen to have received SD card with holographic sticker on its back side and you use
it with OLinuXino-MICRO and you plug USB-SERIAL-CABLE and then you power the
board there is a chance of malfunction of the SD card.
There are two possible workarounds to protect the SD card. The first one is simpler and the
second one requires some soldering experience.
Workaround 1: First insert the iMX233-OLinuXino-SD card and then power the board (and
if powering the board from a battery also press the PWR button). Wait 4-5 seconds and then
connect the USB-SERIAL-CABLE-F. After the initial power-up it is safe to use the reset
button.
Workaround 2: You will need a Shottky diode. The Shottky should be soldered on the USB-
SERIAL-CABLE-F TX line/wire (RED cable) with anode towards the board.
When you power the board by battery you have to press the PWR_BUT to start the board.
If you start Linux and it is already running no matter which powering method you use
(PWR_JACK or BAT) pressing the PWR_BUT will put the Linux in power-save mode.
For the European customers we sell a power supply adapter 5V/1A – SY0605E.
2.5 Prebuilt software
Note that the boards arrive without Linux or SD card. The Linux image can be purchased
separately on a SD card or you can built and adjust it yourself.
When we program the boards we change the default position of the following HW_OCOTP_ROM0
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