SMS512DFA5E NUMONYX, SMS512DFA5E Datasheet - Page 17

• Manufacturer Part Number: SMS512DFA5E
• Description: MICROSD CARD SMS 512MB FLASH MEM
• Manufacturer: NUMONYX

Specifications of SMS512DFA5E

• Memory Size: 512MB
• Memory Type: SD (Secure Digital)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SMSxxxDF
Figure 10. Data packet format
3.3
3.4
Wide bus (all four data lines used)
Standard bus (only DAT0 used)
SD memory card functional description
All communications between the host and the cards are controlled by the host (master).
The host sends commands of two types:
Operation modes
Figure 11
mode and the data transfer mode, respectively.
Table 10
SD memory card state diagram (see
operation mode.
Broadcast commands which are intended for all cards. Some of these commands
require a response.
Addressed (point-to-point) commands that are sent to the addressed card and are
followed by a response from the card.
shows the relationship between operation modes and card states. Each state in the
and
Start bit
always '0'
Start bit
always '0'
Figure 12
DAT3
DAT2
DAT1
DAT0
0
MSB (bit 4095)
0
0
0
0
show an overview of the command flow for the card identification
MSB number
4095
4094
4093
4092
Figure 16
Block length / 4
CONTENT
CONTENT
CONTENT
CONTENT
CONTENT
Block length
and
Figure
Secure digital memory card interface
LSB (bit 0)
1
LSB number
0
3
2
18) is associated with one
CRC 1
CRC 1
CRC 1
CRC 1
CRC 1
End bit always '1'
End bit always '1'
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