SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 31

• Manufacturer Part Number: SDMJ-32
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-32

• Density: 32MByte
• 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 3-21
•
Table 3-22
•
Table 3-23
•
VDD_W_CURR MIN
VDD_R_CURR MIN
VDD_W_CURR MAX
VDD_R_CURR MAX
Therefore, the maximum capacity that can be coded is 4096*512*2048=4 GB. For
example, 4-MB card with BLOCK_LEN = 512 can be coded with C_SIZE_MULT = 0
and C_SIZE = 2047.
C_SIZE_MULT
VDD_R_CURR_MIN, VDD_W_CURR_MIN—minimum values for read and write
currents at the VDD power supply are coded in Table 3-21.
VDD_R_CURR_MAX, VDD_W_CURR_MAX—maximum values for read and
write currents on VDD power supply are coded Table 3-22.
C_SIZE_MULT (Device Size Multiplier)—codes a factor MULT for computing the
total device size (see C_SIZE). The factor MULT is defined as 2
ERASE_GRP_SIZE—contents of this register is a 5-bit binary coded value, used to
calculate the size of the erasable unit of the card. The size of the erase unit (also
referred to as erase group) is determined by the ERASE_GRP_SIZE and the
ERASE_GRP_MULT entries of the CSD, using the following equation:
Size of erasable unit = (ERASE_GRP_SIZE + 1) * (ERASE_GRP_MULT + 1)
2:0
2:0
0
1
2
3
4
5
6
7
Memory capacity = BLOCKNR * BLOCK_LEN
Where:
BLOCKNR = (C_SIZE+1) * MULT
MULT =
BLOCK_LEN = 2
V
V
Device Size Multiplying Factor
DD
DD
0=0.5 mA, 1=1 mA, 2=5 mA, 3=10 mA, 4=25 mA, 5=35 mA, 6=60 mA, 7=100
mA
2
2
2
2
2
2
2
2
0=1 mA, 1=5 mA, 2=10 mA, 3=25 mA, 4=35 mA, 5=45 mA, 6=80 mA, 7=200
mA
2
3
4
5
6
7
8
9
Minimum Current Consumption
Maximum Current Consumption
= 4
= 8
= 16
= 32
= 64
= 128
= 256
= 512
2C_SIZE_MULT+2
3-16
READ_BL_LEN
Code for Current Consumption @ V
Code for Current Consumption @ V
MultiMediaCard and RS-MultiMediaCard Product Manual
MULT
(C_SIZE_MULT < 8)
(READ_BL_LEN < 12)
Chapter 3 –Interface Description
C_SIZE_MULT+2
DD
DD
.
07/15/05