Preliminary
PowerPC 405GPr Embedded Processor Data Sheet
Clocking Specifications
Symbol
Parameter
Min
Max
Units
CPU
PF
PT
Processor clock frequency
266.66 or 333.33
3.75 or 3.00
MHz
ns
C
C
Processor clock period
SysClk Input
SCF
Clock input frequency
25
15
66.66
40
MHz
ns
C
SCT
Clock period
C
SCT
Clock edge stability (phase jitter, cycle to cycle)
Clock input high time
± 0.15
ns
CS
SCT
40% of nominal period 60% of nominal period
40% of nominal period 60% of nominal period
ns
CH
SCT
Clock input low time
ns
CL
Note: Input slew rate > 2V/ns
MemClkOut Output
MCOF
MCOT
MCOT
Clock output frequency @ PF = 266MHz
133.33
MHz
ns
C
C
Clock period @ PF = 266MHz
7.5
C
C
Clock edge stability (phase jitter, cycle to cycle)
Clock output high time
± 0.2
ns
CS
CH
MCOT
MCOT
45% of nominal period 55% of nominal period
45% of nominal period 55% of nominal period
ns
Clock output low time
ns
CL
TrcClk Output
TCF
PF / 2
Clock output frequency
Clock period
MHz
ns
C
C
TCT
PT x 2
C
C
TCT
Clock edge stability (phase jitter, cycle to cycle)
Clock output high time
± 0.2
45% of nominal period
ns
CS
TCT
ns
CH
TCT
Clock output low time
45% of nominal period
ns
CL
Other Clocks
VCOF
VCO frequency @ PF = 266MHz
500
500
1000
1333
MHz
MHz
MHz
MHz
C
C
VCOF
VCO frequency @ PF = 333MHz
C
C
PLBF
PLB frequency @ PF = 266MHz
133.33
66.66
C
C
OPBF
OPB frequency @ PF = 266MHz
C
C
Clocking Waveform
2.0V
1.5V
0.8V
TCH
TCL
TC
42
IBM [ IBM ]
