Chapter 3 – SD Card Interface Description
Revision 2.2
SD Card Product Manual
© 2004 SanDisk Corporation
3-10
12/08/04
Parameter Symbol
Min
Max
Unit Remark
Clock (CLK) – all values referred to min. V
IH
and max. V
IL
Output delay time during Data
Transfer mode
t
OSU
0 14 ns
C
L
< 25 pF (1 card)
Output delay time during
Identification mode
t
ODLY
0 50 ns
C
L
< 25 pF (1 card)
3.4.7
Bus Timing (high-speed mode)
High-speed mode dataIn/dataOut timing is illustrated in Figure 3-8; bus timing parameter
values are shown in Table 3-8.
Figure 3-8
Data In/Out Referenced to Clock Timing (high-speed)
Table 3-8
Bus Timing Parameter Values (high-speed)
Parameter Symbol
Min
Max
Unit Remark
Clock (CLK) – all values referred to min. V
IH
and max. V
IL
Clock Freq. Data Transfer Mode
f
PP
0 50
MHz
Clock Low Time
t
WL
7 --- ns
Clock High Time
t
WH
7 --- ns
Clock Rise Time
t
TLH
--- 3 ns
Clock Fall Time
t
THL
--- 3 ns
Inputs CMD, DAT – referenced to CLK
Input setup time
t
ISU
6 --- ns
Input hold time
t
IH
2
---
ns
Outputs CMD, DAT – referenced to CLK
Output delay time during Data
Transfer mode
t
ODLY
--- 14 ns
