hb288016mm1 Renesas Electronics Corporation., hb288016mm1 Datasheet - Page 74

• Manufacturer Part Number: hb288016mm1
• Description: Multimediacard 16 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB288016MM1
The access time (t
The synchronous part of the access time is sum of the command frame length and some additional internal
cycles (N
time is T
The resulting memory access time t
74
T
which are required to access a byte of the memory field.
T
SAD
AAD
CMD
DAT
: The synchronous access time. This time defines the time of the maximum number of cycles
: The asynchronous access time to read a byte out of the memory field.
t
SAD
SAD
AT
Output
= T
Clock
= 0.8 s. The asynchronous access delay of the HB288016MM1 is T
Input
= 16 cycles). At 20 MHz one cycle is 50 ns (1/f
AAD
command frame
AT
+ T
) is divided into two parts:
SAD
: Invalid
Valid data
Timing Diagram of Data Input and Output
AT
with
t
t
OH
is the sum of both parts:
IH
t
WH
T
SAD
Access Time
t
AT
T
t
PP
SAD
t
T
THL
= N
AAD
SAD
CLK
t
WL
/f
), multiplied with N
CLK
t
ISU
t
OSU
response frame
Valid data
Valid data
t
TLH
data
AAD
SAD
= 300 s maximum.
the resulting frame
V
V
V
V
V
V
IH
IL
IH
IL
OH
OL