MC56F8347 Freescale Semiconductor, Inc, MC56F8347 Datasheet - Page 140

• Manufacturer Part Number: MC56F8347
• Description: 56f8300 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

1. N/A, since device captures data before it deasserts RD
2. If RWSS = RWSH = 0, and the chip select does not change, then RD does not deassert during back-to-back reads.
3. Substitute BMDAR for MDAR if there is no chip select
4. MDAR is active in this calculation only when the chip select changes.
140
Address Valid to WR Asserted
WR Width Asserted to WR
Deasserted
Valid Data Out Hold Time after WR
Deasserted
Valid Data Out Set-Up Time to WR
Deasserted
Valid Address after WR Deasserted
RD Deasserted to Address Invalid
Address Valid to RD Deasserted
Valid Input Data Hold after RD
Deasserted
RD Assertion Width
Address Valid to Input Data Valid
Address Valid to RD Asserted
RD Asserted to Input Data Valid
WR Deasserted to RD Asserted
RD Deasserted to RD Asserted
WR Deasserted to WR Asserted
RD Deasserted to WR Asserted
Data Out Valid to WR Asserted
Characteristic
Table 10-16 External Memory Interface Timing
Symbol
t
t
t
t
t
t
WRWR
WRRD
RDWR
t
t
t
t
t
t
ARDD
t
ARDA
t
RDRD
AWR
t
DWR
WAC
DOH
DOS
DRD
t
RDD
RDA
t
WR
RD
AD
56F8347 Technical Data, Rev.11
Configuration
Wait States
WWS=0
WWS>0
WWS=0
WWS>0
WWS=0
WWS=0
WWS>0
WWS>0
WWS=0
WWS>0
WWS=0
WWS>0
-10.252
-14.414
-19.299
-12.411
-17.297
-0.357
-2.121
-1.805
-0.063
-0.253
-2.868
-9.505
-2.552
-1.512
-2.047
-9.000
-3.888
-2.922
-1.645
-2.002
-1.323
-1.442
-0.695
-0.476
-0.160
0.257
0.00
D
2
0.75 + DCAOE
0.25 + DCAOE
0.25 + DCAEO
0.25 + DCAOE
0.25 + DCAEO
0.25 + DCAOE
0.25 + DCAEO
1.25 + DCAOE
1.25 + DCAOE
0.25 + DCAEO
0.75 + DCAEO
0.75 + DCAOE
N/A
0.50
0.00
0.50
0.50
0.00
1.00
1.00
1.00
0.00
1.00
0.00
1.00
0.50
M
0
1
Freescale Semiconductor
WWSS, WWSH
RWSH, WWSS,
WWSH,RWSS
RWSS,RWSH
Wait States
WWS,WWSS
RWSS,RWS
RWSS,RWS
RWSS,RWS
Controls
MDAR
MDAR
WWSS
WWSS
WWSH
WWSH
RWSH
RWSS
WWS
RWS
—
3, 4
3
Preliminary
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns