PF38F2030W0YCQ3 Intel, PF38F2030W0YCQ3 Datasheet - Page 57

• Manufacturer Part Number: PF38F2030W0YCQ3
• Manufacturer: Intel

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