Freescale Semiconductor, Inc.
AC Electrical Characteristics and Timing
Reset, Stop, Wait, Mode Select, and Interrupt Timing
(VCC = 5.0 V dc ± 10%, TJ = -40° to +125°C, CL = 50 pF + 1 TTL Load)
Table 13 Reset, Stop, Wait, Mode Select, and Interrupt Timing (continued)
Num
Characteristics
40 MHz
Min
Max
50 MHz
Min
Max
60 MHz
Unit
Min
Max
21 Delay from General-Purpose
Output Valid Caused by the
Execution of the First Inter-
rupt Instruction to IRQA,
IRQB Deassertion for Level
Sensitive Fast Interrupts — If
2nd Interrupt Instruction is:
Single Cycle
—
cyc - 29
—
cyc - 27
—
cyc - 26
ns
(See Note 2)
Two Cycles
—
3 cyc - 29
—
3 cyc - 27
—
3 cyc - 26 ns
22 Synchronous setup time from
14
cyc-3
13
cyc-2
12
cyc-1
ns
IRQA, IRQB assertion to
Synchronous falling edge of
CLKO (See Notes 5 and 6)
23 Falling Edge of CLKO to First
Interrupt Vector Address Out
Valid after Synchronous
recovery from Wait State
(See Notes 3 and 5)
27T+3
27T+20
27T+3
27T+18
27T+3
27T+16
ns
24 IRQA Width Assertion to
Recover from Stop State
(See Note 4)
15
—
13
—
12
—
ns
25 Delay from IRQA Assertion to
Fetch of first instruction (exit-
ing Stop)
(See Notes 1 and 3)
OMR bit 6=0 524303T+4
—
524303T+3
—
524303T+3
—
ns
OMR bit 6=1
47T+4
—
47T+3
—
47T+3
—
ns
28 Duration for Level Sensitive
IRQA Assertion to Cause the
Fetch of First IRQA Interrupt
Instruction (exiting Stop)
(See Notes 1 and 3)
OMR bit 6=0 524303T
—
524303T
—
524303T
—
ns
OMR bit 6=1
47T
—
47T
—
47T
—
ns
29 Delay from Level Sensitive
IRQA Assertion to First Inter-
rupt Vector Address Out
Valid (exiting Stop)
(See Notes 1 and 3)
OMR bit 6=0 524303T+4
—
524303T+3
—
524303T+3
—
ns
OMR bit 6=1
47T+4
—
47T+3
—
47T+3
—
ns
MOTOROLA
DSP56156 Data Sheet
23
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