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MC68HC000EI20 Datasheet, PDF (150/189 Pages) Freescale Semiconductor, Inc – 8-/16-/32-Bit Microprocessors User’s Manual | |||
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Freescale Semiconductor, Inc.
10.10 AC ELECTRICAL SPECIFICATIONS â READ AND WRITE CYCLES
(VCC=5.0 VDC±5+; GND=0 V; TA=TL to TH; (see Figures 10-4 and 10-5) (Applies To All
Processors Except The MC68EC000)
Num
Characteristic
8 MHz*
16.67 MHz
10 MHz* 12.5 MHz*
12F
16 MHz
20 MHz â¢â¢ Unit
Min Max Min Max Min Max Min Max Min Max Min Max
6 Clock Low to Address Valid
â 62 â 50 â 50 â 50
30 â 25 ns
6A Clock High to FC Valid
â 62 â 50 â 45 â 45 0 30 0 25 ns
7 Clock High to Address, Data â 80 â 70 â 60 â 50
Bus High Impedance
(Maximum)
50 â 42 ns
8 Clock High to Address, FC
Invalid (Minimum)
0 â 0 â 0 â 0 â 0 â 0 â ns
91 Clock High to AS, DS
Asserted
3 60 3 50 3 40 3 40 3 30 3 25 ns
112 Address Valid to AS, DS
30 â 20 â 15 â 15 â 15 â 10 â ns
Asserted (Read)/AS Asserted
(Write)
11A2 FC Valid to AS ), DS Asserted 90 â 70 â 60 â 30 â 45 â 40 â ns
(Read)/ AS ) Asserted (Write)
121 Clock Low to AS, DS Negated â 62 â 50 â 40 â 40 3 30 3 25 ns
132 AS, DS Negated to Address, 40 â 30 â 20 â 10 â 15 â 10 â ns
FC Invalid
142 ASand DS Read) Width
Asserted
270 â 195 â 160 â 120 â 120 â 100 â ns
14A DS Width Asserted (Write)
152 AS, DS Width Negated
140
95
80
60
60 â 50 â ns
150 â 105 â 65 â 60 â 60 â 50 â ns
16 Clock High to Control Bus
High Impedance
172 AS, DS Negated to R/W
Invalid
181 Clock High to R/W High
(Read)
201 Clock High to R/W Low
(Write)
20A2,6 AS Asserted to R/W Valid
(Write)
212 Address Valid to R/W Low
(Write)
21A2 FC Valid to R/W Low (Write)
222 R/ W Low to DS Asserted
(Write)
â 80 â 70 â 60 â 50 â 50 â 42 ns
40 â 30 â 20 â 10 â 15 â 10 â ns
0 55 0 45 0 40 0 40 0 30 0 25 ns
0 55 0 45 0 40 0 40 0 30 0 25 ns
â 10 â 10 â 10 â 10 â 10 â 10 ns
20 â 0 â 0 â 0 â 0 â 0 â ns
60 â 50 â 30 â 20 â 30 â 25 â ns
80 â 50 â 30 â 20 â 30 â 25 â ns
23 Clock Low to Data-Out Valid
(Write)
â 62 â 50 â 50 â 550 â 30 â 25 ns
252 AS, DS) Negated to Data-Out 401 â 30 â 20 â 15 â 15 â 10 â ns
Invalid (Write)
0
10-10
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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