SD Memory card
SD-4GB-A User’s Guide
CONTEC CO., LTD.
Thank you for purchasing the SD Memory Card.
Follow the procedures in this guide to use the product.
- Product Configuration List
- Product [SD-4GB-A]… 1 - Warranty Certificate…1
- Serial Number Label…1 - User’s Guide (this booklet)…1
- Disposal
When disposing of the product, follow the disposal procedures stipulated under the relevant laws and municipal
ordinances.
- Safety Information
This document provides safety information using the following symbols to prevent accidents resulting in injury or death
and the destruction of equipment and resources. Understand the meanings of these labels to operate the equipment safely.
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury or in property damage.
- Handling Precautions
This product is not produced or intended to be used for controlling of equipment directly concerned with human life (*1)
or maintenance of public services/functions involving factors of safety (*2). Do not use the product in such applications.
*1: Such as medical equipment of life-sustaining devices or surgical tools.
*2: Such as controlling system and security check for nuclear power plant, public transport, and air traffic where safety
is critical.
- Do not modify the product. Doing so may cause fire, electric shock.
- If smoke or abnormal odor is detected, immediately turn off the PC and peripheral devices and unplug the power
cables.
- Never touch this product with wet hands. Doing so can short-circuit the product to cause fire, electric shock, and/or
failure.
- This is a precision product. Do not strike or bend the product. Otherwise, it leads to malfunction.
- Do not use or store this product in a location exposed to high or low temperature that exceeds range
of specification or susceptible to rapid temperature changes. It may cause malfunction, or damage.
- Do not use or store this product in a location exposed to direct sun or in the vicinity of a heat source such as a stove.
It may cause malfunction, or damage.
- Do not use this product in the vicinity of devices that generate strong magnetic force or noise. Such products will
cause this product to malfunction.
- Do not use or store this product in the presence of chemicals.
- Do not touch metal parts or terminals of the product with your hands in operation. Otherwise, this product may
malfunction.
- Before handling the product, touch a metal object around to release any built-up static charge from your body to
prevent the product from being damaged by static electricity.
- It is limited in the number of cycles they can be written (rewritten) to due to the nature of its memory used.
- Do not turn off the power during SD Memory Card access (writing). Doing so may break the data.
- Do not insert or remove the card into/from a computer in operation.
- This product is designed to be plugged only in one orientation. Do not force it to be plugged in.
- Do not modify or disassemble the product. CONTEC is not liable for any modifications or disassembly.
- This User’s Guide must accompany the product upon assigning or transferring.
- No part of this document may be copied or reproduced in any form by any means without prior written consent of
CONTEC CO., LTD.
- The information in this document is subject to change without notice.
- All relevant issues have been considered in the preparation of this document. Should you notice an omission or
any questionable item in this document, please feel free to notify CONTEC CO., LTD.
- Regardless of the foregoing statements, CONTEC is not liable for any damages whatsoever (including damages
for loss of business profits) arising out of the use or inability to use this CONTEC product or the information
contained herein.
- Features
- Conforming to the SD Memory Card standard
- Containing no rotating or moving part as in hard disk drives, thus best suited for applications which require high
environmental resistance (to temperature, humidity, vibration, shock) and for continuous operation for extended
periods of time.
- Never making any sound such as motor rotation sound or access noise during seeking, thus best suited for
applications which require complete silence.
- Featuring greater reliability, writing sequences, and increased number of rewriting with SLC (Single Level Cell),
NAND type flash memory, it is more suited than MLC (Multi Level Cell) for industrial applications.
- Power consumption is reduced by eliminating a rotating or moving part.
- Specification
Item
Specification
Type
SD-4GB-A
Memory capacity *1
3,931MB
Interface
SD Memory Card interface
Read(Sequential) *2
22MByte/sec
Write(Sequential) *2
19MByte/sec
MTBF
5,082,261H
NAND Flash memory life span
100,000 cycles*3
Power voltage
2.7 – 3.6 VDC
Power
consumption
Read / Write
(Sequential)
80mA (Typ.) / 85mA (Typ.)
Operating temperature
-40 - 85°C
Relative humidity
3 - 93%RH (No condensation)
External dimension (mm)
24.0(W)x32.0(D)x2.1(H)
Weight
Approx. 2g
*1: Capacity when shipped. The actual capacity (after formatting) in the user environment may be smaller than this
value.
*2: An actual performance is different depending on the use conditions.
*3: Life span of per 1 block.
- Physical Dimensions
- Pin position.
SD Memory Card Interface
Pin Number
Signal name
Function
1
CD/DATA3
Card Detect / Data Line [Bit3]
2
CMD
Command / Response
3
VSS
GND
4
VCC
2.7 – 3.6 V
5
CLK
Clock
6
VSS
GND
7
DAT0
Data Line [Bit0]
8
DAT1
Data Line [Bit1]
9
DAT2
Data Line [Bit2]
- About write endurance
SD-4GB-A series have a write endurance which limits the number of cycles each memory may be written, due to the
characteristic of the memory that is used. For the write endurance, use the calculations below to obtain an estimated value.
Write endurance (days) =
((Total capacity (MB) / Management block size (MB)) x the erasing number of writing (cycles))
/ The number of management block to be
rewritten per 1 cycle
Example1: When the file of 10MB is made for SD-4GB-A, and it rewrites it once per 10 seconds.
Write endurance =((4000/ 2)
×
100,000) /5 = 40,000,000 (cycles)
Life = 40,000,000 / ((60 / 10)
×
60
×
24
×
365) = 12 (years)
*Above examples are reference values.
Copyright 2016 CONTEC CO., LTD. All Rights Reserved.
CONTEC CO.,LTD.
3
-9-31, Himesato, Nishiyodogawa-ku, Osaka 555-0025, Japan
August 2016 Edition
Japanese http://www.contec.co.jp/ English http://www.contec.com/
Chinese
http://www.contec.com.cn/
NA05276 (LYUJ681)
[08252016]
No part of this document may be copied or reproduced in any form by any means without prior written consent of CONTEC CO., LTD.
DANGER
WARNING
CAUTION
WAR
NING
C
AUTION
SD-4GB-A
XXXXXXXXXXXXX
S/N:
24
32
2.1
[mm]
SD Memory
Card
1 32 4 5 6 8
9
7
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