参数资料
型号: PowerPC 405CR
厂商: IBM Microeletronics
英文描述: 32-bit RISC Embedded Controllers(32位RISC结构嵌入式控制器)
中文描述: 32位RISC嵌入式控制器(32位的RISC结构嵌入式控制器)
文件页数: 34/42页
文件大小: 565K
代理商: POWERPC 405CR
PowerPC 405CR Embedded Controller Data Sheet
34
Peripheral Interface Clock Timings
Parameter
Min
Max
Units
PerClk output frequency—200MHz (for external master or synchronous
slaves)
50
MHz
PerClk period—200MHz
20
ns
PerClk output frequency—266MHz (for external master or synchronous
slaves)
66
MHz
PerClk period—266MHz
15
ns
PerClk output high time
50% of nominal period
66% of nominal period
ns
PerClk output low time
33% of nominal period
50% of nominal period
ns
UARTSerClk input frequency
(Note 1)
1000/(2T
OPB
+2ns)
MHz
UARTSerClk period
2T
OPB
+2
T
OPB
+1
T
OPB
+1
ns
UARTSerClk input high time
ns
UARTSerClk input low time
ns
TmrClk input frequency—200MHz
50
MHz
TmrClk period—200MHz
20
ns
TmrClk input frequency—266MHz
66
MHz
TmrClk period—266MHz
15
ns
TmrClk input high time
40% of nominal period
60% of nominal period
ns
TmrClk input low time
40% of nominal period
60% of nominal period
ns
Notes:
1. T
OPB
is the period in ns of the OPB clock. The internal OPB clock runs at 1/2 the frequency of the PLB clock. The maximum OPB
clock frequency is 50 MHz for 200MHz parts and 66MHz.for 266MHz parts.
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