参数资料
型号: MPC870VR80
厂商: Freescale Semiconductor
文件页数: 16/84页
文件大小: 0K
描述: IC MPU POWERQUICC 80MHZ 256PBGA
标准包装: 60
系列: MPC8xx
处理器类型: 32-位 MPC8xx PowerQUICC
速度: 80MHz
电压: 3.3V
安装类型: 表面贴装
封装/外壳: 256-BGA
供应商设备封装: 256-PBGA(23x23)
包装: 托盘
MPC875/MPC870 PowerQUICC Hardware Specifications, Rev. 4
Freescale Semiconductor
23
Bus Signal Timing
B33a
CLKOUT rising edge to GPL valid as
requested by control bit GxT3 in the
corresponding word in the UPM
(MAX = 0.25
× B1 + 6.80)
7.60
14.30
6.30
13.00
3.80
10.50
3.13
10.00
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
× B1 – 2.00)
5.60
4.30
1.80
1.13
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
× B1 – 2.00)
13.20
10.50
5.60
4.25
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
× B1 – 2.00)
20.70
16.70
9.40
6.80
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
× B1 – 2.00)
5.60
4.30
1.80
1.13
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
× B1 – 2.00)
13.20
10.50
5.60
4.25
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
× B1 – 2.00)
20.70
16.70
9.40
7.40
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
× B1 – 2.00)
5.60
4.30
1.80
1.13
ns
B37
UPWAIT valid to CLKOUT falling edge9
(MIN = 0.00
× B1 + 6.00)
6.00
6.00
6.00
6.00
ns
B38
CLKOUT falling edge to UPWAIT valid9
(MIN = 0.00
× B1 + 1.00)
1.00
1.00
1.00
1.00
ns
B39
AS valid to CLKOUT rising edge10
(MIN = 0.00
× B1 + 7.00)
7.00
7.00
7.00
7.00
ns
B40
A(0:31), TSIZ(0:1), RD/WR, BURST valid to
CLKOUT rising edge
(MIN = 0.00
× B1 + 7.00)
7.00
7.00
7.00
7.00
ns
B41
TS valid to CLKOUT rising edge (setup time)
(MIN = 0.00
× B1 + 7.00)
7.00
7.00
7.00
7.00
ns
Table 10. Bus Operation Timings (continued)
Num
Characteristic
33 MHz
40 MHz
66 MHz
80 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max
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