dsp56852 Freescale Semiconductor, Inc, dsp56852 Datasheet - Page 25

• Manufacturer Part Number: dsp56852
• Description: 56800e 16-bit Digital Signal Controllers Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Operating Conditions: V
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
1. N/A since device captures data before it deasserts RD
2. If RWSS = RWSH = 0, RD does not deassert during back-to-back reads and D = 0.00 should be used.
Characteristic
SS
= V
SSIO
= V
Table 4-7 External Memory Interface Timing
SSA
= 0 V, V
Symbol
t
t
t
t
t
t
WRWR
t
WRRD
RDWR
t
t
t
RDRD
t
t
ARDD
t
ARDA
t
DWR
AWR
t
DOH
WAC
DD
DOS
RDA
DRD
t
t
RDD
WR
RD
AD
56852 Technical Data, Rev. 8
= 1.62-1.98 V, V
Configuration
Wait States
WWS=0
WWS>0
WWS=0
WWS>0
WWS=0
WWS=0
WWS>0
WWS>0
WWS=0
WWS>0
DDIO
= V
DDA
= 3.0–3.6V, T
-10.13
-13.22
-12.65
-0.17
- 6.03
- 0.51
- 1.06
-0.75
-1.50
-0.52
-0.13
-1.73
-4.29
-1.71
-2.38
-4.42
-1.44
-2.03
-0.97
-9.06
-0.70
-0.47
-0.07
-0.31
-1.86
0.00
0.10
D
2
A
= –40° to +120°C, C
N/A
0.50
0.69
0.19
0.00
0.00
0.25
0.19
0.50
0.25
0.19
0.50
0.25
0.00
1.00
1.00
1.00
1.19
0.00
1.00
1.19
0.25
0.00
0.75
1.00
0.50
0.69
M
1
External Memory Interface Timing
MDAR, BMDAR,
WWSS, WWSH
RWSH, WWSS
WWSH,RWSS
RWSS,RWSH
Wait States
WWS,WWSS
RWSS,RWS
RWSS,RWS
RWSS,RWS
Controls
WWSS
WWSS
WWSH
WWSH
RWSH
RWSS
WWS
RWS
—
L
≤ 50pF, P = 8.333ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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