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MC68HC000EI20 Datasheet, PDF (64/189 Pages) Freescale Semiconductor, Inc – 8-/16-/32-Bit Microprocessors User’s Manual | |||
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Freescale Semiconductor, Inc.
BUS THREE-STATED
BG ASSERTED
BR VALID INTERNAL
BR SAMPLED
BR ASSERTED
BUS RELEASED FROM THREE STATE AND
PROCESSOR STARTS NEXT BUS CYCLE
BGACK NEGATED INTERNAL
BGACK SAMPLED
BGACK NEGATED
CLK
S0 S1 S2 S3 S4 S5 S6 S7
BR
S0 S1 S2 S3 S4 S5 S6 S7 S0 S1
BG
BGACK
FC2âFC0
A23âA1
AS
UDS
LDS
R/W
DTACK
D15âD0
PROCESSOR
ALTERNATE BUS MASTER
PROCESSOR
Figure 5-19. 3-Wire Bus Arbitration Timing DiagramâProcessor Active
5-18
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
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