SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 21

• 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
3.4.2
3.4.3
3.4.4
Bus Operating Conditions
Bus Signal Line Load
Bus Signal Levels
SPI Mode Bus operating conditions are identical to those in MultiMediaCard mode. Table
3-3 lists the power supply voltages. The CS signal timing is identical to the input signal
timing (see Figure 3-5).
Table 3-3
The total capacitance CL of each line in the MultiMediaCard bus is the sum of the bus
master capacitance CHOST, the bus capacitance CBUS itself and the capacitance CCARD
of each card connected to this line:
Where N is the number of connected cards. Requiring the sum of the host and bus
capacitances not to exceed 30 pF for up to 10 cards, and 40 pF for up to 30 cards, the
values in Table 3-4 must not be exceeded.
Table 3-4
Because the bus can be supplied with a variable supply voltage, all signal levels are related
to the supply voltage (see Figure 3-4).
3
General
Peak voltage on all lines
All Inputs
Input Leakage Current
All Outputs
Output Leakage Current
Power Supply Voltage
Supply Voltage
Supply voltage differentials
(V
Capacitance
V
Pull-up resistance
Bus signal line capacitance
Bus signal line capacitance
Signal card capacitance
Max. signal line inductance
The current consumption of any card during the power-up procedure must not exceed 10 mA.
CL = CHOST + CBUS + N*CCARD
DD
SS1
Capacitance
, V
SS2
Parameter
)
Parameter
Bus Operating Conditions Summary
Host and Bus Capacities
3
R
Symbol
CMD,
Symbol
C
C (V
C
C
CARD
---
V
---
---
---
---
L
L
R
DD
3-6
DD
DAT
)
MultiMediaCard and RS-MultiMediaCard Product Manual
Min.
50
---
---
---
---
Min
-0.5
-0.5
-10
-10
2.7
---
Max.
100
250
100
16
7
Max
3.6
3.6
0.5
3.0
10
10
Unit
kΩ
nH
pF
pF
pF
Chapter 3 –Interface Description
Prevents bus floating
f
f
---
f
Unit
PP
PP
PP
uA
uA
uF
V
V
V
< 5 MHz, 30 cards
< 20 MHz, 10 cards
<20 MHz
Remark
Remark
07/15/05