MC68HC000RC12 Datasheet, PDF (68/189 Pages) Freescale Semiconductor, Inc – 8-/16-/32-Bit Microprocessors User’s Manual

Freescale Semiconductor, Inc.
BUS RELEASED FROM THREE STATE AND PROCESSOR STARTS NEXT BUS CYCLE
BR NEGATED
BG ASSERTED AND BUS THREE STATED
BR VALID INTERNAL
BR SAMPLED
BR ASSERTED
CLK
S0 S1 S2 S3 S4 S5 S6 S7
BR
BG
S0 S1 S2 S3 S4
BGACK
FC2–FC0
A23–A1
AS
UDS
LDS
R/W
DTACK
D15–D0
PROCESSOR
BUS
INACTIVE
ALTERNATE BUS MASTER
PROCESSOR
Figure 5-23. 2-Wire Bus Arbitration Timing Diagram—Bus Inactive
5-22
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
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