參數(shù)資料
型號: PPC440GX-3RF800CZ
廠商: APPLIEDMICRO INC
元件分類: 微控制器/微處理器
英文描述: Power PC 440GX Embedded Processor
中文描述: 32-BIT, 800 MHz, RISC PROCESSOR, CBGA552
封裝: 25 X 25 MM, ROHS COMPLIANT, CERAMIC, FBGA-552
文件頁數(shù): 82/93頁
文件大?。?/td> 794K
代理商: PPC440GX-3RF800CZ
440GX – Power PC 440GX Embedded Processor
82
AMCC
Revision 1.15 – August 30, 2007
Data Sheet
I/O Timing—DDR SDRAM T
SK
, T
SA
, and T
HA
Notes:
1. T
SK
is referenced to MemClkOut0(0). T
SA
and T
HA
are referenced to MemClkOut0(90).
2. To obtain adjusted T
SA
values for lower clock frequencies, use 3/4 of the cycle time for the lower clock frequency and
subtract T
SK
maximum at 166MHz (0.75T
CYC
- T
SK
max).
3. To obtain adjusted T
HA
values for lower clock frequencies, use 1/4 of the cycle time for the lower clock frequency and add
T
SK
minimum at 166MHz (0.25T
CYC
+ T
SK
min).
Clock Speed (MHz)
Signal Name
T
SK
(ns)
T
SA
(ns)
T
HA
(ns)
Minimum
Maximum
Minimum
Minimum
166
MemAddr00:12
0.184
0.592
3.908
1.684
166
BA0:1
0.439
0.683
3.817
1.939
166
BankSel0:3
0.249
0.779
3.721
1.749
166
ClkEn0:3
0.344
0.724
3.776
1.844
166
CAS
0.319
0.561
3.939
1.819
166
RAS
0.373
0.683
3.817
1.873
166
WE
0.393
0.639
3.816
1.893
200
MemAddr00:12
-0.283
0.307
3.443
0.967
200
BA0:1
-0.286
0.353
3.397
0.964
200
BankSel0:3
-0.270
0.321
3.429
0.980
200
ClkEn0:3
-0.280
0.298
3.452
0.970
200
CAS
-0.270
0.294
3.456
0.980
200
RAS
-0.263
0.311
3.439
0.987
200
WE
-0.280
0.288
3.462
0.970
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