參數(shù)資料
型號(hào)： HB28L064RM3
廠商： Renesas Technology Corp.
英文描述： MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
中文描述： 多媒體32 MByte/64 MByte/128 MByte/256 MByte/512字節(jié)
文件頁數(shù)： 83/91頁
文件大?。?/td> 526K
代理商： HB28L064RM3
HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Rev.0.02, Sep.15.2004, page 83 of 89
Input
Output
: Invalid
Clock
t
PP
V
IH
V
IL
V
OH
V
OL
V
IH
V
IL
t
OH
t
WH
t
WL
t
OSU
t
ISU
t
IH
t
HL
t
LH
Valid data
Valid data
Valid data
Timing Diagram of Data Input and Output
The access time (t
AT
) is divided into two parts:
T
SAD
: The synchronous access time. This time defines the time of the maximum number of cycles
which are required to access a byte of the memory field.
T
AAD
: The asynchronous access time to read a byte out of the memory field.
The synchronous part of the access time is sum of the command frame length and some additional internal
cycles (N
SAD
= 16 cycles). At 20 MHz one cycle is 50 ns (1/f
PP
), multiplied with N
SAD
the resulting frame
time is T
SAD
= 0.8
μ
s. The asynchronous access delay of these Renesas MultiMediaCards is T
AAD
= 300
μ
s
typical. The resulting memory access time t
AT
is the sum of both parts:
t
AT
= T
AAD
+ T
SAD
with
T
SAD
= N
SAD
/ f
PP
DAT
CMD
T
SAD
t
AT
T
AAD
command frame
response frame
data
Access Time
相關(guān)PDF資料
PDF描述
HB28K032MM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28K032RM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28L064MM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB28J512MM3 MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
HB3104AD 128Kx8 EEPROM
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