PF38F3040L0YBQ0 Intel, PF38F3040L0YBQ0 Datasheet - Page 63

• Manufacturer Part Number: PF38F3040L0YBQ0
• Manufacturer: Intel

Specifications of PF38F3040L0YBQ0

• Operating Supply Voltage (max): 1.95V
• Operating Temperature (max): 85C
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Supplier Unconfirmed

7 6 8 - M b i t L Q F a m i l y w i t h S y n c h r o n o u s P S R A M
F i g u r e 3 4 . P S R A M R e a d i n g R e g i s t e r s U s i n g S o f t w a r e A c c e s s
1 2 . 3 . 3
T a b l e 2 6 .
A u g u s t 2 0 0 6
O r d e r N u m b e r : 3 1 4 4 7 6 - 0 0 1
UB#/LB#
DQ[15:0]
A[MAX:0]
WE#
CE#
OE#
C a u t i o n a r y N o t e A b o u t S o f t w a r e R e g i s t e r A c c e s s
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.
C a u t i o n a r y C o m m a n d S e q u e n c e s
XXXXh
MAX
Cautionary Command Sequence #1
Cautionary Command Sequence #2
Address
Command
Address
Command
XXXXh
MAX
(WE# controlled)
Async Read
Async Write
Max
Max
RCR: 0000h
BCR: 0001h
DIDR: 0002h
MAX
I n t e l S t r a t a F l a s h ® W i r e l e s s M e m o r y ( L 1 8 S C S P )
Async Read
Async Read
Max
Max
Async Write
Async Write
Output
MAX
Max
Max
D a t a s h e e t
6 3