SDMJ-128 SanDisk, SDMJ-128 Datasheet - Page 29

• Manufacturer Part Number: SDMJ-128
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-128

• Density: 128MByte
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Package Type: MMC
• Mounting: Socket
• Pin Count: 7
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Programmable: Yes
• Lead Free Status / Rohs Status: Compliant

Revision 1.3
© 2005 SanDisk Corporation
•
Table 3-13
•
•
Table 3-14
•
Table 3-15
•
TAAC Bit Position
TRAN_SPEED Bit
TAAC—defines the asynchronous part (relative to the card clock (CLK)) of the read
access time.
NSAC—Defines the worst case for the clock dependent factor of the data access time.
The unit for NSAC is 100 clock cycles. Therefore, the maximal value for the clock
dependent part of the read access time is 25.5k clock cycles.
The total read access time N
by the host for the actual clock rate. The read access time should be interpreted as a
typical delay for the first data bit of a data block from the end bit on the read
commands.
TRAN_SPEED—Table 3-14 defines the maximum data transfer rate TRAN_SPEED.
CCC—The MultiMediaCard command set is divided into subsets (command classes).
The Card Command Class Register (CCC) defines which command classes are
supported by this card. A value of “1” in a CCC bit means that the corresponding
command class is supported.
READ_BL_LEN—The read data block length is computed as 2
maximum block length might therefore be in the range 1, 2, 4…2048 bytes.
CCC Bit
2:0
6:3
2:0
6:3
7
11
7
0
1
TAAC Access Time Definition
Max. Data Transfer Rate Definition
Supported Card Command Classes
Time exponent
0=1 ns, 1=10 ns, 2=100 ns, 3=1 ums, 4=10 ums, 5=100 ums, 6=1 ms, 7=10 ms
Time value
0=reserved, 1=1.0, 2=1.2, 3=1.3, 4=1.5, 5=2.0, 6=2.5, 7=3.0, 8=3.5, 9=4.0,
A=4.5, B=5.0, C=5.5, D=6.0, E=7.0, F=8.0
Reserved
Transfer rate exponent
0=100 kb/s, 1=1 Mb/s, 2=10 Mb/s, 3=100 Mb/s, 4…7=reserved
Time mantissa
0=reserved, 1=1.0, 2=1.2, 3=1.3, 4=1.5, 5=2.0, 6=2.5, 7=3.0, 8=3.5, 9=4.0,
A=4.5, B=5.0, C=5.5, D=6.0, E=7.0, F=8.0
Reserved
Class 0
Class 1
Class 11
AC
3-14
is the sum of TAAC and NSAC. It has to be computed
MultiMediaCard and RS-MultiMediaCard Product Manual
Supported Card Command Class
----
Code
Code
Chapter 3 –Interface Description
READ_BL_LEN
. The
07/15/05