
Reset, Stop, Mode Select, and Interrupt Timing
DSP56367 Technical Data, Rev. 2.1
Freescale Semiconductor
3-7
3.9
Reset, Stop, Mode Select, and Interrupt Timing
Table 3-7 Reset, Stop, Mode Select, and Interrupt Timing
1
No.
Characteristics
Expression
Min
Max
Unit
8
Delay from RESET assertion to all pins at reset value
2
—
—
26.0
ns
9
Required RESET duration
3
Power on, external clock generator, PLL disabled
Power on, external clock generator, PLL enabled
Power on, Internal oscillator
During STOP, XTAL disabled
During STOP, XTAL enabled
During normal operation
50
×
ET
C
1000
×
ET
C
75000
×
ET
C
75000
×
ET
C
2.5
×
T
C
2.5
×
T
C
333.4
6.7
500
500
16.7
16.7
—
—
—
—
—
—
ns
μ
s
μ
s
μ
s
ns
ns
10
Delay from asynchronous RESET deassertion to first
external address output (internal reset deassertion)
4
Minimum
Maximum
3.25
×
TC + 2.0
20.25
×
TC + 10
23.7
—
—
145.0
ns
11
Syn reset setup time from RESET
Maximum
T
C
—
6.7
ns
12
Syn reset deassert delay time
Minimum
Maximum
3.25
×
T
C
+ 1.0
20.25
×
T
C
+ 5.0
22.7
—
—
140.0
ns
13
Mode select setup time
30.0
—
ns
14
Mode select hold time
0.0
—
ns
15
Minimum edge-triggered interrupt request assertion width
4.4
—
ns
16
Minimum edge-triggered interrupt request deassertion width
4.4
—
ns
17
Delay from IRQA, IRQB, IRQC, IRQD, NMI assertion to
external memory access address out valid
Caused by first interrupt instruction fetch
Caused by first interrupt instruction execution
4.25
×
T
C
+ 2.0
7.25
×
T
C
+ 2.0
30.3
50.3
—
—
ns
18
Delay from IRQA, IRQB, IRQC, IRQD, NMI assertion to
general-purpose transfer output valid caused by first interrupt
instruction execution
10
×
T
C
+ 5.0
71.7
—
ns
19
Delay from address output valid caused by first interrupt
instruction execute to interrupt request deassertion for level
sensitive fast interrupts
5, 6, 7
(WS + 3.75)
×
T
C
– 10.94
—
Note 8
ns
20
Delay from RD assertion to interrupt request deassertion for
level sensitive fast interrupts
5, 6, 7
(WS + 3.25)
×
T
C
– 10.94
—
Note 8
ns