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4 Product Specification
The MICRO SD Memory Card is a small form factor non-volatile memory card which provides high capacity data
storage. Its aim is to capture, retain and transport data, audio and images, facilitating the transfer of all types of
digital information between a large variety of digital systems.
The card operates in two basic modes:
SD/SDHC card mode
SPI mode
The MICRO SD Memory Card also supports SD High Speed mode with up to 50MHz clock frequency.
The cards are compliant with
SD Memory card Specification Part 1, Physical layer Specification V3.01
SD Memory card Specification Part 2, File System Specification V3.00
SD Memory card Specification Part 3, Security Specification V3.00
MICRO SD Memory Card Addendum V4.00
Simplified specifications are available at https://www.sdcard.org/downloads/pls/simplified_specs/
The Card has an internal intelligent controller which manages interface protocols, data storage and retrieval as
well as hardware BCH Error Correction Code (ECC), defect handling, diagnostics and clock control.
The advanced wear leveling mechanism assures an equal usage of the Flash memory cells to extend the life time.
The hardware BCH-code ECC allows to detect and correct up to 24 defect bits per 1kByte.
The card has a power-loss management feature to prevent data corruption after power-down. The power
consumption is very low.
The cards are RoHS compliant and lead-free.
4.1 System Performance
Table 3: Performance
System Performance
Burst Data transfer Rate (max SD clock 50MHz)
typ
max
25
Unit
Sustained Sequential Read
2GB
4…8GB
19
19
(1)(2)
(1)(2)
24
24
(1)(3)
(1)(3)
MB/s
12
22
Sustained Sequential Write
2GB
4…8GB
11
17
(1)(2)
(1)(2)
(1)(3)
(1)(3)
1. All values refer to Micron Flash 8Gb MICRO SD Memory Card in SD mode 50MHz, cycle time 20ns,
2. Sustained Speed measured with USB-SD Memory Card reader. It depends on burst speed, flash number, and file size.
3. Maximum values were measured with Testmetrix tester.
4.2 Environmental Specifications
4.2.1 Recommended Operating Conditions
Table 4: MICRO SD Memory Card Recommended Operating Conditions
Parameter
Extended Operating Temperature
Power Supply VCC (3.3V)
min
-25
2.7
typ
25
3.3
max
85
3.6
unit
°C
V
Table 5: Current consumption
Current Consumption (typ)
Write
Read
Sleep Mode
typ
60
50
0.15
max
70
60
2
Unit
mA
Swissbit AG
Industriestrasse 4
CH-9552 Bronschhofen
Switzerland
Swissbit reserves the right to change products or specifications without notice.
www.swissbit.com
industrial@swissbit.com
Revision: 1.00
S-300u_data_sheet_Rev100.doc
Page 19 of 19
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