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: 32/42页
文件大小: 565K
代理商: POWERPC 405CR
PowerPC 405CR Embedded Controller Data Sheet
32
Test Conditions
Clock timing and switching characteristics are specified in accordance
with operating conditions shown in the table “Recommended DC
Operating Conditions.” AC specifications are characterized at
V
DD
= 3.14V and T
J
= 100C with the 50pF test load (C
L
) shown in
the figure at right.
SysClk and MemClk Timing
Symbol
Timing Waveform
Parameter
Min
Max
Units
SysClk Input
F
C
T
C
T
CS
T
CH
T
CL
SysClk clock input frequency
25
66.6
MHz
SysClk clock period
15
40
ns
Clock edge stability
0.15
ns
Clock input high time
40% of nominal period
60% of nominal period
ns
Clock input low time
40% of nominal period
60% of nominal period
ns
Note:
Input slew rate > 2V/ns
MemClk Output
F
C
T
C
F
C
T
C
T
CH
T
CL
MemClk clock output frequency—200MHz
100
MHz
MemClk clock period—200MHz
10
ns
MemClk clock output frequency—266MHz
133
MHz
MemClk clock period—266MHz
7.5
ns
Clock output high time
35% of nominal period
65% of nominal period
ns
Clock output low time
35% of nominal period
65% of nominal period
ns
Output
Pin
C
L
C
L
= 50pf for all signals
T
CL
T
CH
T
C
2.0V
1.5V
0.8V
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