Electrical Characteristics
2 Electrical Characteristics
This section provides the AC and DC electrical specifications and thermal characteristics for the
MPC8548E. This device is currently targeted to these specifications. Some of these specifications are
independent of the I/O cell, but are included for a more complete reference. These are not purely I/O buffer
design specifications.
2.1
Overall DC Electrical Characteristics
This section covers the ratings, conditions, and other characteristics.
2.1.1
Absolute Maximum Ratings
Table 1 provides the absolute maximum ratings.
1
Table 1. Absolute Maximum Ratings
Characteristic
Symbol
Max Value
Unit
Notes
Core supply voltage
PLL supply voltage
V
–0.3 to 1.21
–0.3 to 1.21
–0.3 to 1.21
–0.3 to 1.21
V
V
V
V
V
—
—
—
—
—
DD
AV
SV
XV
DD
DD
DD
Core power supply for SerDes transceivers
Pad power supply for SerDes transceivers
DDR and DDR2 DRAM I/O voltage
GV
–0.3 to 2.75
–0.3 to 1.98
DD
Three-speed Ethernet I/O voltage
LV (for eTSEC1
and eTSEC2)
–0.3 to 3.63
–0.3 to 2.75
V
3
3
DD
TV (for eTSEC3
–0.3 to 3.63
–0.3 to 2.75
DD
and eTSEC4)
PCI/PCI-X, DUART, system control and power management,
I C, Ethernet MII management, and JTAG I/O voltage
OV
–0.3 to 3.63
V
V
—
—
DD
DD
2
Local bus I/O voltage
BV
–0.3 to 3.63
–0.3 to 2.75
Input voltage DDR/DDR2 DRAM signals
DDR/DDR2 DRAM reference
MV
–0.3 to (GV + 0.3)
V
V
4
IN
DD
MV
–0.3 to
—
REF
(GV /2 + 0.3)
DD
Three-speed Ethernet I/O signals
LV
–0.3 to (LV + 0.3)
V
4
IN
DD
TV
–0.3 to (TV + 0.3)
IN
DD
Local bus signals
BV
–0.3 to (BV + 0.3)
—
V
—
4
IN
DD
DUART, SYSCLK, system control and power
OV
OV
–0.3 to (OV + 0.3)
DD
IN
IN
2
management, I C, Ethernet MII management,
and JTAG signals
PCI/PCI-X
–0.3 to (OV + 0.3)
V
4
DD
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 6
Freescale Semiconductor
10
FREESCALE [ Freescale ]
