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參數(shù)資料
| 型號： | PF38F3050L0YUQ3A |
| 廠商： | INTEL CORP |
| 元件分類： | 存儲器 |
| 英文描述： | SPECIALTY MEMORY CIRCUIT, PBGA88 |
| 封裝： | 8 X 10 MM, 1.20 MM HEIGHT, ROHS COMPLIANT, SCSP-88 |
| 文件頁數(shù)： | 60/70頁 |
| 文件大?。?/td> | 1193K |
| 代理商： | PF38F3050L0YUQ3A |
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Intel StrataFlash Wireless Memory (L18 SCSP)
August 2006
Datasheet
Order Number: 314476-001
63
768-Mbit LQ Family with Synchronous PSRAM
12.3.3
Cautionary Note About Software Register Access
To insure inadvertent access to the PSRAM registers during asynchronous operation, the system
must avoid the below two command sequences when accessing the main memory array. On the 3rd
cycle of the below command sequences the write to the main memory may be blocked and the
software register access mode may be entered. To avoid such possibility, the system should avoid
the below command sequences unless it is intending to access the registers through the software
method.
Figure 34. PSRAM Reading Registers Using Software Access
MAX
XXXXh
Output
RCR: 0000h
BCR: 0001h
DIDR: 0002h
A[MAX:0]
CE#
OE#
WE#
UB#/LB#
DQ[15:0]
Table 26. Cautionary Command Sequences
Cautionary Command Sequence #1
Address
Max
Command
Async Read
Async Write
Cautionary Command Sequence #2
Address
Max
Command
Async Write
(WE# controlled)
Async Read
Async Write
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