W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 77
W90220F
Manufacturer Part Number
W90220F
Description
Pa-risc Embedded Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W90220F.pdf
(79 pages)
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The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
77
6.3
6.3.1 Memory controller
*3 : Inputs with internal pull-up resistor include : PREQ#[0:1], SERR#, INTA#, INTB#, INTC#, INTD#,
AC Specifications
Fig 6.3.1-1 : DRAM AC Timimg
RAS3# - RAS0#
CAS3# - CAS0#
Fig 6..3.1-2 Flash ROM Write Timimg
Pins of 6mA sink capability include :
Pins of 8mA sink capability include :
Symbol
t rv1
t rv2
t cv1
t cv2
t wv
t ds
t dh
t av
MD31 - MD0
MA11 - MA0
PCLK
WE#
RAS# valid delay ref. to PCLK rising
RAS# valid delay ref. to PCLK rising
CAS# valid delay ref. to PCLK rising
RAS# valid delay ref. to PCLK rising
WE# valid delay ref. to PCLK rising
Memory data setup time
Memory data hold time
Memory address valid delay
t wv
Parameter
t rv1
SOUT1, SOUT2.
nAutoFd, nStrob, SelectIn, nInit, SDO, MD[0:31], DD[0:7],
PCICLK, SCLK, SYNC.
C/BE[0:3], PDA[0:31], STOP#, PERR#, TRDY#, DEVSEL#,
FRAME#, IRDY#, PPAR.
t cv1
t av
RAS#[0:3], RCS#[0:3], ROM_OE#, ROM_RW#, IOR, IOW,
CAS#[0:3], MA[0:11], WE#, PCIRST, GNT#[0:1], ED[0:7],
CTS1#, DSR1#, RI1#, DCD1#.
t ds t dh
Min
t rv2
t cv2
Max
W90220F
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Version 0.84
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