參數(shù)資料
型號: MPC857TZQ50B
廠商: Freescale Semiconductor
文件頁數(shù): 15/88頁
文件大小: 0K
描述: IC MPU PWRQUICC 50MHZ 357-PBGA
標準包裝: 44
系列: MPC8xx
處理器類型: 32-位 MPC8xx PowerQUICC
速度: 50MHz
電壓: 3.3V
安裝類型: 表面貼裝
封裝/外殼: 357-BBGA
供應商設備封裝: 357-PBGA(25x25)
包裝: 托盤
MPC862/857T/857DSL PowerQUICC Family Hardware Specifications, Rev. 3
22
Freescale Semiconductor
Bus Signal Timing
B32c CLKOUT rising edge to BS valid - as
requested by control bit BST3 in the
corresponding word in the UPM
(MAX = 0.25 x B1 + 6.80)
7.60
14.30
6.30
13.00
5.00
11.80
3.80
10.50
ns
B32d CLKOUT falling edge to BS valid- as
requested by control bit BST1 in the
corresponding word in the UPM,
EBDF = 1 (MAX = 0.375 x B1 + 6.60)
9.40
18.00
7.60
16.00
13.30
14.10
11.30
12.30
ns
B33
CLKOUT falling edge to GPL valid - as
requested by control bit GxT4 in the
corresponding word in the UPM
(MAX = 0.00 x B1 + 6.00)
1.50
6.00
1.50
6.00
1.50
6.00
1.50
6.00
ns
B33a CLKOUT rising edge to GPL Valid - as
requested by control bit GxT3 in the
corresponding word in the UPM
(MAX = 0.25 x B1 + 6.80)
7.60
14.30
6.30
13.00
5.00
11.80
3.80
10.50
ns
B34
A(0:31), BADDR(28:30), and D(0:31)
to CS valid - as requested by control bit
CST4 in the corresponding word in the
UPM (MIN = 0.25 x B1 - 2.00)
5.60
4.30
3.00
1.80
ns
B34a A(0:31), BADDR(28:30), and D(0:31)
to CS valid - as requested by control bit
CST1 in the corresponding word in the
UPM (MIN = 0.50 x B1 - 2.00)
13.20
10.50
8.00
5.60
ns
B34b A(0:31), BADDR(28:30), and D(0:31)
to CS valid - as requested by CST2 in
the corresponding word in UPM
(MIN = 0.75 x B1 - 2.00)
20.70
16.70
13.00
9.40
ns
B35
A(0:31), BADDR(28:30) to CS valid -
as requested by control bit BST4 in the
corresponding word in the UPM
(MIN = 0.25 x B1 - 2.00)
5.60
4.30
3.00
1.80
ns
B35a A(0:31), BADDR(28:30), and D(0:31)
to BS valid - As Requested by BST1 in
the corresponding word in the UPM
(MIN = 0.50 x B1 - 2.00)
13.20
10.50
8.00
5.60
ns
B35b A(0:31), BADDR(28:30), and D(0:31)
to BS valid - as requested by control bit
BST2 in the corresponding word in the
UPM (MIN = 0.75 x B1 - 2.00)
20.70
16.70
13.00
9.40
ns
B36
A(0:31), BADDR(28:30), and D(0:31)
to GPL valid as requested by control
bit GxT4 in the corresponding word in
the UPM (MIN = 0.25 x B1 - 2.00)
5.60
4.30
3.00
1.80
ns
Table 7. Bus Operation Timings (continued)
Num
Characteristic
33 MHz
40 MHz
50 MHz
66 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max
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