PF38F2030W0YCQ3 Intel, PF38F2030W0YCQ3 Datasheet - Page 57
PF38F2030W0YCQ3
Manufacturer Part Number
PF38F2030W0YCQ3
Description
Manufacturer
Intel
Datasheet
1.PF38F2030W0YCQ3.pdf
(61 pages)
Specifications of PF38F2030W0YCQ3
Operating Supply Voltage (max)
1.95V
Operating Temperature (max)
85C
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
1 2 8 - M b i t W 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 1 . E x a m p l e o f P S R A M B u r s t I n t e r r u p t
1 2 . 5 . 3
1 2 . 6
J u l y 2 0 0 6
O r d e r N u m b e r : 3 1 1 7 6 0 - 0 0 4
P S R A M B u r s t T e r m i n a t i o n
A b u r s t a c c e s s i s t e r m i n a t e d b y b r i n g i n g C E # h i g h a n d m a i n t a i n i n g h i g h f o r m i n i m u m o f
t C B P H .
I n b u r s t m o d e a r e f r e s h o p p o r t u n i t y m u s t b e p r o v i d e d e v e r y t C S L p e r i o d b y
m a i n t a i n i n g C E # h i g h f o r m i n i m u m o f 1 5 n s o r m a i n t a i n i n g C E # h i g h d u r i n g a c l o c k l o w
t o h i g h t r a n s i t i o n .
P S R A M R o w B o u n d a r y C r o s s i n g
R o w b o u n d a r y c r o s s i n g s a r e n o t a l l o w e d i n b u r s t m o d e ( r e g a r d l e s s o f u s i n g v a r i a b l e o r
f i x e d l a t e n c y m o d e . ) A n o n - g o i n g b u r s t m u s t b e t e r m i n a t e d b y t h e s y s t e m p r i o r t o a
r o w b o u n d a r y c r o s s i n g . A r o w b o u n d a r y c r o s s i n g w o u l d n e v e r o c c u r i f t h e P S R A M i s
o p e r a t i n g i n f i x e d b u r s t l e n g t h a n d w r a p m o d e . T h e r e f o r e t h e o n l y t i m e t h e s y s t e m
s h o u l d b e c o n c e r n e d w i t h r o w b o u n d a r y c r o s s i n g i s i f t h e P S R A M i s o p e r a t i n g w i t h “ n o
w r a p ” ( B C R 3 = 0 b ) o r “ c o n t i n u o u s b u r s t l e n g t h ” ( B C R [ 2 : 0 ] = 1 1 1 b ) s e t t i n g s .
I n t e r m i n a t i n g b u r s t s p r i o r t o r o w b o u n d a r y c r o s s i n g , t h e s y s t e m m a y r e a d t h e r o w s i z e
( 1 2 8 o r 2 5 6 w o r d s ) t o d e t e r m i n e a t w h i c h a d d r e s s e s t h e r o w b o u n d a r y c r o s s i n g o c c u r s .
I f t h e s y s t e m c a n n o t d o t h i s , t h e n i t s h o u l d b e a s s u m e d t h a t t h e r o w s i z e i s 1 2 8 w o r d s .
I n t h e c a s e o f 1 2 8 - w o r d r o w s i z e t h e b o u n d a r y b e t w e e n a d j a c e n t r o w s o c c u r s a t e v e r y
a d d r e s s e n d i n g i n 7 F h ( 1 1 1 1 1 1 1 b . ) I n t h e c a s e o f 2 5 6 - w o r d r o w s i z e t h e b o u n d a r y
b e t w e e n a d j a c e n t r o w s o c c u r s a t e v e r y a d d r e s s e n d i n g i n F F h ( 1 1 1 1 1 1 1 1 b . )
A t a R o w b o u n d a r y c r o s s i n g , a b u r s t i n t e r r u p t o r t e r m i n a t i o n m u s t o c c u r n o l a t e r t h a n
2 - c l o c k c y c l e p a s t t h e t r a n s a c t i o n r e p r e s e n t i n g t h e l a s t w o r d o f a r o w .
CLK
Control
ADV#
DQ
Burst Init
No-OP
No-OP
I n t e l
No-OP
®
W i r e l e s s F l a s h M e m o r y ( W 1 8 S C S P ) w i t h S y n c P S R A M
tHD
Code 3
No-OP
Burst Init
Read becomes high-Z
Earliest allowed
burst interrupt
Write data is masked
tWHZ
D a t a s h e e t
5 7