Revision 1.15 – August 30, 2007
440GX – Power PC 440GX Embedded Processor
Data Sheet
DC Power Supply Loads
Parameter
Symbol
Frequency (MHz)
Typical
1.37
1.49
1.77
58
Maximum
1.69
1.8
Unit
A
Notes
2
533
667
800
533
667
800
533
667
800
VDD active operating current
OVDD active operating current
SVDD active operating current
IDD
A
2
2.2
A
2, 3
2
111
mA
mA
mA
mA
mA
mA
mA
IODD
58
111
2
58
111
2, 3
2
544
568
680
33
749
ISDD
837
2
940
2, 3
1, 2
AxVDD input current
IADD
Notes:
1. See “Absolute Maximum Ratings” on page 58 for filter recommendations.
2. The maximum current 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 listed values were obtained:
a. In general, the values are measured using a PPC440GX Evaluation Board set for Ethernet mode 4, PCI-X running at 100MHz with
an Intel Pro 1000, an Agilent Test card, an EBMI test card, a UART wrap plug, and one 128MB Micron DIMM 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.
System clock rates are set as follows: SysClk = 33MHz, CPU = 667MHz, PLB = 167MHz, and OPB = EBC = 83MHz.
b. Typical current is characterized at VDD = +1.5V, OVDD = +3.3V, SVDD = +2.5V, and TC = +47°C.
c. Maximum current is characterized at VDD = +1.6V, OVDD = +3.6V, SVDD = +2.7V, and TC = +85°C.
3. Estimated values.
Test Conditions
Output
Pin
Clock timing and switching characteristics are specified in accordance with operating
conditions shown in the table “Recommended DC Operating Conditions.” AC
10pF
C
specifications are characterized with V = 1.5V, T = +85°C and a 10pF test load as
DD
C
shown in the figure to the right.
AMCC
63
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
