512MB to 2GB (SLC)
4GB to 32GB (pSLC)
2.7V to 3.6V
‒25 to +85°C (‒40 to +85°C)
‒40 to +85°C
100mA (3.3V in Write)
100mA (3.3V in Read)
0.4mA (3.3V in Stand-by)
512MB to 32GB (SLC)
4GB to 32GB (pSLC)
2.7V to 3.6V
‒25 to +85°C (‒40 to +85°C)
‒40 to +85°C
100mA (3.3V in Write)
100mA (3.3V in Read)
0.4mA (3.3V in Stand-by)
SDHC UHS-I MMRD4/MURD4 Series
SD C
ARD
MURD4 Series
Data capacity
Power supply voltage
Ambient operating temperature
Ambient storage temperature
Current consumption
Data capacity
Power supply voltage
Ambient operating temperature
Ambient storage temperature
Current consumption
MMRD4 Series
□
Basic Characteristics/Ratings
The demand for SD / microSD memory cards,
which excel as storage devices for sensor
information in compactness and low power
consumption, is increasing with the rapid
progressing of the IoT. TLC and MLC type flash
memories are employed with products for
general consumers because of the demand for
low costs, but are mostly not used for industrial
applications because of durability and reliability
issues. TDK MMRD4/MURD4 Series are
high-speed UHS-I compatible SD/microSD
memory cards equipped with the high-durability
SLC/pSLC flash memory and the newly-devel-
oped SD controller GBDriverRD4. In addition to
data retention capability and durability, they
also excel in data reliability during power
interruptions so they can be used worry-free
with IoT devices which frequently shut down
due to low power consumption demands.
SD / microSD memory cards with support for high-reliability UHS-I,
drastically improving data reliability during power interruptions.
□ FEATURES
□ SHAPES AND DIMENSIONS □ SHAPES AND DIMENSIONS
Employed TDK SD controller GBDriver RD4. (Developed by us)
Employed 4K, 8KByte/Page (SLC), 16KByte/Page (pSLC) NAND type
flash memory. (Domestically-manufactured)
Compatible with SD Specification ver.3.01.
SDHC (from 4GB): Compatible with UHS-I / SD speed class Class10.
SD (to 2GB): Compatible with SD speed class Class6.
Equipped with 42bit/1KByte ECC (over 4GB).
Equipped with 24bit/1KByte ECC (2GB or below).
Equipped with TDK global static wear leveling function.
Life monitor software (TDK SMART) is included.
Equipped with SDA-compliant security / TDK original security functions.
Technical support by dedicated FAE is available.
Complies with RoHS directives.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
□ ENDURANCE (Expected P/E cycles) □ ENDURANCE (Expected P/E cycles)
□ CHARACTERISTICS □ CHARACTERISTICS
□ Measures Against Power Failures
MMRD4 Series (SD memory card) MMRD4 Series (microSD memory card)
Dimensions in mmDimensions in mm
*The above products have an ambient operating temperature of ‒25 to +85℃.
For products with an ambient operating temperature of ‒40 to +85°C,
convert the blue letter C in the product name to W.
（(Example: MMRD4512MVNACA00AAA0 [‒25 to +85℃ product]
⇒ MMRD4512MVNAWA00AAA0 [‒40 to +85℃ product])
*The above products have an ambient operating temperature of ‒25 to +85℃.
For products with an ambient operating temperature of ‒40 to +85°C,
convert the blue letter C in the product name to W.
（(Example: MMRD4512MVNACA00AAA0 [‒25 to +85℃ product]
⇒ MMRD4512MVNAWA00AAA0 [‒40 to +85℃ product])
SD cards that are safe even during power failures due to the power interruption
tolerance algorithm that is common within products in the TDK GBDriver Series.
Power interruption resistance test results
Test (1) Test (2)
[Write (CMD25) ⇒ CMD15 issuance ⇒ power interruption
in Inactive mode]*Repeated execution of the following test image
[Write (CMD25) ⇒ power interruption during writing]
*Repeated execution of the following test image
Command
line
Command
line
STATE
Power
supply
Power
supply
STATE
CMD25
Write
Read (data comparisons)
Power interruption
Receive-data
Data is being written
Power interruption
Receive-dataInactive
Wait
Write
CMD25CMD15 CMD18
Read (data comparisons)
CMD18
*There are differences in the number of power interruptions due to differences in the write speed of each card.
*Measured with CrystalDiskMark 4.1.0 when 16GB (SLC).The speed
may vary depending on the actual use environment/conditions.
512MB/1GB/2GB/4GB/8GB/16GB/32GB (SLC)
4GB/8GB/16GB/32GB (pSLC)
SD memory card
SLC (Single Level Cell) NAND type Flash Memory (4KB/Page,8KB/Page)
pSLC NAND type Flash Memory (16KB/Page)
TDK GBDriver RD4
SD Specification Ver3.01
SDHC (over 4GB): UHS-I / SD speed class Class10
SD (2GB or below): SD speed class Class 6
75MB/s
50MB/s
42bit/1KByte (over 4GB) / 24bit/1KByte (2GB or below)
2.7V∼3.6V
‒25 to +85℃ [‒40 to +85℃ Industrial Option]
‒40 to +85℃
0 to 90(%) RH [No condensation]
CE
RoHS compliant
Data capacity
Form factor
Memory type
Controller
Interface
Transfer mode
Transfer speed*
Read(max.)
Write(max.)
Error check and correction (ECC)
Power supply voltage
Ambient operating temperature
Ambient storage temperature
Storage/operating humidity
Conformed standards
Environmental specifications
Data capacity
Form factor
Memory type
Controller
Interface
Transfer mode
Transfer speed*
Read(max.)
Write(max.)
Error check and correction (ECC)
Power supply voltage
Ambient operating temperature
Ambient storage temperature
Storage/operating humidity
Conformed standards
Environmental specifications
*Measured with CrystalDiskMark 4.1.0 when 16GB (SLC).The speed
may vary depending on the actual use environment/conditions.
512MB/1GB/2GB (SLC)
4GB/8GB/16GB/32GB (pSLC)
microSD memory card
SLC (single Level Cell) NAND type Flash Memory (4KB/Page)
pSLC NAND type Flash Memory (16KB/Page)
TDK GBDriver RD4
SD Specification Ver3.01
SDHC (over 4GB): UHS-I / SD speed class Class10
SD (2GB or below): SD speed class Class 6
75MB/s
50MB/s
42bit/1KByte (over 4GB) / 24bit/1KByte (2GB or below)
2.7V∼3.6V
‒25 to +85℃ [‒40 to +85℃ Industrial Option]
‒40 to +85℃
0 to 90(%) RH [No condensation]
CE
RoHS compliant
Data
capacity
Part No.
SLC
1 year 5 years 10 years
Expected
endurance
(Units:
million times)
Allowable accesses per second
according to age of equipment
(When operating 24 hrs/d, 365 ds/yr)
pSLC
512MB
1GB
2GB
4GB
8GB
16GB
32GB
4GB
8GB
16GB
32GB
MMRD4512MVNACA00AAA0
MMRD4001GVNBCA00AAA0
MMRD4002GVNB
CA00AAA0
MMRD 4 0 0 4 GV YACA00AAA0
MMRD4008GVYB
CA00AAA0
MMRD4016GVYBCA00AAA0
MMRD4032GVYB
CA00AAA0
MMRD4004GVHA
CA00AAA0
MMRD4008GVJACA00AAA0
MMRD4016GVJBCA00AAA0
MMRD4032GVJBCA00AAA0
98
197
394
394
788
1,576
3,152
39
79
158
315
3.12
6.25
12.49
12.49
24.99
49.97
99.95
1.25
2.50
5.00
10.00
0.62
1.25
2.50
2.50
5.00
10.00
19.99
0.25
0.50
1.0 0
2.00
0.31
0.62
1.25
1.25
2.50
5.00
9.99
0.13
0.25
0.50
1.0 0
Data
capacity
Part No.
SLC
pSLC
1 year 5 years 10 years
Expected
endurance
(Units:
million times)
Allowable accesses per second
according to age of equipment
(When operating 24 hrs/d, 365 ds/yr)
512MB
1GB
2GB
4GB
8GB
16GB
32GB
MURD4512MVNACA00AAA0
MURD 4001GVNBCA00AAA0
MURD4002GVNB
CA00AAA0
MURD4004GVHA
CA00AAA0
MURD4008GVHB
CA00AAA0
MURD4016GVHBCA00AAA0
MURD4032GVHB
CA00AAA0
98
197
394
39
79
158
315
3.12
6.25
12.49
1.25
2.50
5.00
10.00
0.62
1.25
2.50
0.25
0.50
1.0 0
2.00
0.31
0.62
1.25
0.13
0.25
0.50
1.0 0
write
enable
22.5
24
4
7.7
9.7
11
3.85
7×1.10
8×0.80
0.7
1
0.7
1.4
4
32
7.9
0.3
6.4
15
1.12.9
1.2
2.1
9
DAT2
1
CD/
DAT3
2
CMD
3
VSS
4
VDD
5
CLK
6
VSS
7
DAT0
8
DAT1
CL
1 2 3 4 5 6 7 8
TDK Company A Company B
Test (1) Test (2) Test (1) Test (2) Test (1) Test (2)
Amount of written data (sectors) 166,049,542
88,734,906
27,296,954
27,814,088
5,791,942 5,780,137
Number of power interruptions (times)
15,989 10,994 7,155 8,676 753 867
Card failures (units) 0 0 2 1 1 1
(incidence rate [%]) ( 0.00% ) ( 0.00% ) ( 0.03% ) ( 0.01% ) ( 0.13% ) ( 0.12% )