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MPC823 数据表(PDF) 41 Page - Freescale Semiconductor, Inc

部件名 MPC823
功能描述  AC Electrical Specifications
PDF  70 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

MPC823 数据表(HTML) 41 Page - Freescale Semiconductor, Inc

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MPC823 ELECTRICAL SPECIFICATIONS
41
Table 9. IDMA Timing
NUM
CHARACTERISTIC
25MHZ
40MHZ
50MHZ
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
40
DREQ setup time to clock high
12
Ñ7Ñ7Ñ
nsec
41
DREQ hold time from clock high
5Ñ3Ñ3Ñ
nsec
42
SDACK assertion delay from clock high
Ñ
20
Ñ
12
Ñ
12
nsec
43
SDACK negation delay from clock low
Ñ
20
Ñ
12
Ñ
12
nsec
44
SDACK negation delay from TA low
Ñ
25
Ñ
20
Ñ
20
nsec
45
SDACK negation delay from clock high
Ñ
20
Ñ
15
Ñ
15
nsec
46
TA assertion to falling edge of the clock
setup time
12
Ñ7Ñ7Ñ
nsec
NOTE: Applies to external TA.
Figure 38. IDMA External Requests Timing Diagram
CLKOUT
DREQ
(INPUT)
(OUTPUT)
41
40
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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