Revision 1.07 – September 10, 2007
PPC405EP – PowerPC 405EP Embedded Processor
Data Sheet
Table 11. DC Electrical Characteristics
Parameter
Symbol
Minimum
Typical
300
325
45
Maximum
610
Unit
mA
mA
mA
mA
W
Active Operating Current (VDD)–266MHz
IDD
Active Operating Current (VDD)–333MHz
IDD
IODD
IPLL
PDD
PDD
690
Active Operating Current (OVDD
)
200
PLL VDD Input current
16
23
Active Operating Power–266MHz
Active Operating Power–333MHz
Note:
0.72
0.76
1.92
2.07
W
1. The maximum current and power values listed above are not guaranteed to be the highest obtainable. These values are
dependent on many factors including the type of applications running, clock rates, use of internal functional capabilities, external
interface usage, case temperature, and the power supply voltages. Your specific application can produce significantly different
results. VDD (logic) current and power are primarily dependent on the applications running and the use of internal chip functions
(DMA, PCI, Ethernet, and so on). OVDD (I/O) current and power are primarily dependent on the capacitive loading, frequency, and
utilization of the external buses. The following information provides details about the conditions under which the values in the table
above could be obtained:
a. In general, there would be four PCI devices, an external bus master on the peripheral bus, and external wrap-back on the
Ethernet port. For IODD measurements, PLB = 133.3MHz, OPB = PerClk = 66.6MHz, and PCI = SysClk = 33.3MHz.
b. Typical current and power are characterized at VDD = +1.8V, OVDD = +3.3V, and TC = +36°C while running various
applications under the Linux operating system.
c. Maximum current and power are characterized at VDD = +1.9V, OVDD = +3.6V, and TC = +85°C while running applications
designed to maximize CPU power consumption. An external PCI master heavily loads the PCI bus with transfers targeting
SDRAM while the internal DMA controller further increases SDRAM bus traffic.
2. AVDD should be derived from VDD using the following circuit:
L1 – 2.2μH SMT inductor (equivalent to MuRata
AVDD
VDD
LQH3C2R2M34) or SMT chip ferrite bead (equivalent
to MuRata BLM31A700S)
L1
+
C1 – 3.3 μF SMT tantalum
C1
C2
C3
C2 – 0.1μF SMT monolithic ceramic capacitor with X7R
AGND
dielectric or equivalent
C3 – 0.01μF SMT monolithic ceramic capacitor with X7R
GND
dielectric or equivalent
AMCC
39
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
