mpc855t Freescale Semiconductor, Inc, mpc855t Datasheet - Page 10

• Manufacturer Part Number: mpc855t
• Description: Mpc855t Powerquicc Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

Power Dissipation
5
Table 5
and 2:1, where CPU frequency is twice the bus speed.
1
2
6
Table 6
10
D.4
(1:1 mode)
D.4
(2:1 mode)
Operating voltage at 40 MHz or less
Operating voltage greater than 40 MHz
Input high voltage (all inputs except EXTAL and
EXTCLK)
Input low voltage
EXTAL, EXTCLK input high voltage
Input leakage current, V
DSCK, and DSDI pins)
Typical power dissipation is measured at 3.3 V.
Maximum power dissipation is measured at 3.5 V.
Power Dissipation
DC Characteristics
provides power dissipation information. The modes are 1:1, where CPU and bus speeds are equal,
provides the DC electrical characteristics for the MPC860.
1
Values in
include I/O power dissipation over V
widely by application due to buffer current, depending on external circuitry.
Characteristic
Die Revision
in
= 5.5 V (except TMS, TRST,
MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8
Table 5
represent V
Table 6. DC Electrical Specifications
Table 5. Power Dissipation (P
DDL
(all other operating modes)
(all other operating modes)
-based power dissipation and do not
V
NOTE
V
(power-down mode)
(power-down mode)
DDH
DDH
DDH
Frequency (MHz)
, V
, V
KAPWR
KAPWR
KAPWR
KAPWR
Symbol
V
DDL
. I/O power dissipation varies
DDSYN
DDL
V
V
V
I
IHC
in
IH
IL
50
66
66
80
, KAPWR,
, V
DDSYN
D
)
Typical
0.7 × (V
V
V
TBD
DDH
DDH
656
722
851
3.135
GND
Min
3.0
2.0
2.0
2.0
—
– 0.4
– 0.4
DDH
1
)
Freescale Semiconductor
Maximum
V
TBD
DDH
735
762
909
V
3.465
V
Max
100
3.6
3.6
3.6
5.5
0.8
DDH
DDH
+ 0.3
2
Unit
mW
mW
mW
mW
Unit
µA
V
V
V
V
V
V
V
V
V