參數(shù)資料
型號: XPC850ZT50BU
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 40/76頁
文件大小: 825K
代理商: XPC850ZT50BU
40
MPC850 (Rev. A/B/C) Hardware Specifications
MOTOROLA
Layout Practices
Table 6-11 shows the reset timing for the MPC850.
Figure 6-31 shows the reset timing for the data bus configuration.
Figure 6-31. Reset Timing—Configuration from Data Bus
Table 6-11. Reset Timing
Num
Characteristic
50 MHz
66MHz
80 MHz
FFACTOR
Unit
Min
Max
Min
Max
Min
Max
R69
CLKOUT to HRESET high impedance
20.00
20.00
20.00
ns
R70
CLKOUT to SRESET high impedance
20.00
20.00
20.00
ns
R71
RSTCONF pulse width
340.00
515.00
425.00
17.000
ns
R72
R73
Configuration data to HRESET rising
edge set up time
350.00
505.00
425.00
15.000
ns
R74
Configuration data to RSTCONF rising
edge set up time
350.00
350.00
350.00
ns
R75
Configuration data hold time after
RSTCONF negation
0.00
0.00
0.00
ns
R76
Configuration data hold time after
HRESET negation
0.00
0.00
0.00
ns
R77
HRESET and RSTCONF asserted to
data out drive
25.00
25.00
25.00
ns
R78
RSTCONF negated to data out high
impedance.
25.00
25.00
25.00
ns
R79
CLKOUT of last rising edge before chip
tristates HRESET to data out high
impedance.
25.00
25.00
25.00
ns
R80
DSDI, DSCK set up
60.00
90.00
75.00
3.000
ns
R81
DSDI, DSCK hold time
0.00
0.00
0.00
ns
R82
SRESET negated to CLKOUT rising
edge for DSDI and DSCK sample
160.00
242.00
200.00
8.000
ns
HRESET
RSTCONF
D[0:31] (IN)
R71
R74
R73
R75
R76
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