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MPC823 Datasheet(PDF) 47 Page - Freescale Semiconductor, Inc

Part # MPC823
Description  AC Electrical Specifications
PDF  70 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC823 Datasheet(HTML) 47 Page - Freescale Semiconductor, Inc

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MPC823 ELECTRICAL SPECIFICATIONS
47
Table 12. Serial Interface Timing
NUM
CHARACTERISTIC
25MHZ
40MHZ
50MHZ
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
70
L1RCLK and L1TCLK frequency (DSC=0)1,3
Ñ10Ñ10Ñ10
MHz
71
L1RCLK and L1TCLK width low (DSC=0)3
P+10
Ñ
P+10
Ñ
P+10
Ñ
ns
71a
L1RCLK and L1TCLK width high (DSC=0)2
P+10
Ñ
P+10
Ñ
P+10
Ñ
ns
72
L1TXD, L1ST(1Ð8), L1RQ, L1CLKO rise and fall
times
Ñ15Ñ15Ñ15
ns
73
L1RSYNC, L1TSYNC valid to L1CLK edge
(SYNC setup time)
20Ñ20Ñ20Ñ
ns
74
L1CLK edge to L1RSYNC and L1TSYNC invalid
(SYNC hold time)
35Ñ35Ñ35Ñ
ns
75
L1RSYNC and L1TSYNC rise and fall times
Ñ
15
Ñ
15
Ñ
15
ns
76
L1RXD valid to L1CLK edge (L1RXD setup time)
42
Ñ
42
Ñ
42
Ñ
ns
77
L1CLK edge to L1RXD invalid (L1RXD hold time)
35
Ñ
35
Ñ
35
Ñ
ns
78
L1CLK edge to L1ST(1Ð8) valid
10
45
10
45
10
45
ns
78a
L1SYNC valid to L1ST(1Ð8) valid4
10
45
10
45
10
45
ns
79
L1CLK edge to L1ST(1Ð8) invalid
10
45
10
45
10
45
ns
80
L1CLK edge to L1TXD valid
10
65
10
65
10
65
ns
80a
L1TSYNC valid to L1TXD valid4
10
65
10
65
10
65
ns
81
L1CLK edge to L1TXD high impedance
0
42
0
42
0
42
ns
82
L1RCLK and L1TCLK frequency (DSC=1)
Ñ
12.5
Ñ
16
Ñ
16
MHz
83
L1RCLK and L1TCLK width low (DSC=1)
P+10
Ñ
P+10
Ñ
P+10
Ñ
ns
83a
L1RCLK and L1TCLK width high (DSC=1)2
P+10
Ñ
P+10
Ñ
P+10
Ñ
ns
84
L1CLK edge to L1CLKO valid (DSC=1)
Ñ
30
Ñ
30
Ñ
30
ns
85
L1RQ valid before falling edge of L1TSYNC3
1Ñ1Ñ1Ñ
L1TCLK
86
L1GR setup time3
42Ñ42Ñ42Ñ
ns
87
L1GR hold time3
42Ñ42Ñ42Ñ
ns
88
L1CLK edge to L1SYNC valid
(FSD = 00, CNT = 0000, BYT = 0, DSC=0)
Ñ0Ñ0Ñ0
ns
NOTES:
1.
The ratio SyncCLK/L1RCLK must be greater than 2.5/1.
2.
Where P=1/CLKO1. For a 25MHz CLKO1 rate, P=40ns.
3.
These electrical speciÞcations are only valid for IDL mode.
4.
The strobes and TXD2 on the Þrst bit of the frame becomes valid after L1CLK edge or L1SYNC, whichever
is later.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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