DSP56F826 Motorola, DSP56F826 Datasheet - Page 27

• Manufacturer Part Number: DSP56F826
• Description: 16-bit Digital Signal Processor
• Manufacturer: Motorola

3.6 External Bus Asynchronous Timing
Operating Conditions:
Address Valid to WR Asserted
WR Width Asserted
Wait states = 0
Wait states > 0
WR Asserted to D0–D15 Out Valid
Data Out Hold Time from WR Deasserted
Data Out Set Up Time to WR Deasserted
Wait states = 0
Wait states > 0
RD Deasserted to Address Not Valid
Address Valid to RD Deasserted
Wait states = 0
Wait states > 0
Input Data Hold to RD Deasserted
RD Assertion Width
Wait states = 0
Wait states > 0
Address Valid to Input Data Valid
Wait states = 0
Wait states > 0
Address Valid to RD Asserted
RD Asserted to Input Data Valid
Wait states = 0
Wait states > 0
WR Deasserted to RD Asserted
RD Deasserted to RD Asserted
WR Deasserted to WR Asserted
RD Deasserted to WR Asserted
Characteristic
V
SSIO
Table 14. External Bus Asynchronous Timing
=V
SS
= V
SSA
= 0 V, V
DSP56F826 Preliminary Technical Data
DDIO
=3.0 to 3.6V, V
Symbol
t
t
t
t
t
t
WRWR
t
t
WRRD
RDWR
t
t
ARDD
t
ARDA
t
RDRD
t
AWR
t
WRD
DOH
RDA
DRD
t
t
RDD
DOS
WR
AD
RD
DD
= V
DDA
= 2.25–2.75 V, T
(T*WS) + 18.7
(T*WS) + 7.5
(T*WS) + 6.4
(T*WS) + 19
Min
18.7
14.1
12.8
-4.4
6.5
7.5
4.8
6.4
6.8
—
19
—
—
—
—
0
0
0
External Bus Asynchronous Timing
A
= –40 to +85 C, C
1, 2
(T*WS) + 2.4
(T*WS) + 1
T + 4.2
Max
2.4
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
L
50 pF, f
op
= 80 MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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