MC68020RC25E Datasheet, PDF (94/306 Pages) Freescale Semiconductor, Inc – Object-Code Compatible with Earlier M68000 Microprocessors

Freescale Semiconductor, Inc.
CLK
*^A31–A4
A3–A1
A0
FC2–FC0
SIZ1
SIZ0
R/W
** ECS
** ^OCS
AS
DS
DSACK1
S0
S2
S4
S0
S2
S4
INTERRUPT LEVEL
S0
S2
DSACK0
** ^DBEN
D24–D31
D23–D16
D7–D0
VECTOR # FROM 8-BIT PORT
VECTOR # FROM 16-BIT PORT
VECTOR # FROM 32-BIT PORT
IPL2–IPL0
** ^IPEND
READ CYCLE
* ^{For the MC68EC020, A23–A4.}
** ^{This signal does not apply to the MC68EC020.}
INTERRUPT
ACKNOWLEDGE
WRITE STACK
Figure 5-33. Interrupt Acknowledge Cycle Timing
MOTOROLA
M68020 USER’S MANUAL
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