參數(shù)資料
型號(hào): MR80C52XXX-36/883:RD
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQCC44
封裝: LCC-44
文件頁(yè)數(shù): 66/91頁(yè)
文件大小: 19688K
410
XMEGA A [MANUAL]
8077I–AVR–11/2012
33.15 SDRAM 4-bit read
Figure 33-48.Single read
Pr
echa
rg
e
A
ll
Ban
ks
Bank Adr
0x0
D[3:0]
Row Adr
Col Adr
0x400
Ac
tiv
e
Re
ad
NO
P
*
N
O
P
****
Single read
D
ata
s
am
p
le
d
NO
P
**
C
lock
su
spen
d
***
D[7:4]
D
ata
s
am
p
le
d
C
lock
suspe
n
d
** NOP is only inserted for CAS3
**** The number of NOPs is equal to WRDLY[1:0] + 1 (WRDLY = 0 is shown)
***** The number of NOPs is equal to RPDLY[1:0] (RPDLY = 1 is shown)
* The number of NOPs is equal to ROWCOLDLY[2:0] (ROWCOLDLY = 1 is shown)
*** Clock suspended for 1 cycle when EBI is running at 1x and 1 or 2 cycles when EBI
is running at 2x, to enable sampling of data on the positive edge of the 1x clock.
CLK
CKE
CAS
RAS
DQM
BA[1:0]
A[11:0]
D
ClkPER2
WE
CS
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