Timers
15.5.1
Compliance Test and Measurement Load
The AC timing and voltage parameters must be verified at the measurement point, as specified within
0.2 inches of the package pins, into a test/measurement load shown in
NOTE
The allowance of the measurement point to be within 0.2 inches of the
package pins is meant to acknowledge that package/board routing may
benefit from D+ and D– not being exactly matched in length at the package
pin boundary. If the vendor does not explicitly state where the measurement
point is located, the measurement point is assumed to be the D+ and D–
package pins.
D+ Package Pin
C = C
TX
TX Silicon +
Package
C = C
TX
D– Package Pin
R = 50
Ω
R = 50
Ω
Figure 48. Compliance Test/Measurement Load
16 Timers
This section describes the DC and AC electrical specifications for the timers of the MPC8378E.
16.1
Timers DC Electrical Characteristics
provides the DC electrical characteristics for the device timers pins, including TIN, TOUT,
TGATE, and RTC_CLK.
Table 58. Timers DC Electrical Characteristics
Parameter
Output high voltage
Output low voltage
Output low voltage
Input high voltage
Input low voltage
Input current
Condition
I
OH
= –6.0 mA
I
OL
= 6.0 mA
I
OL
= 3.2 mA
—
—
0 V
≤
V
IN
≤
OV
DD
Symbol
V
OH
V
OL
V
OL
V
IH
V
IL
I
IN
Min
2.4
—
—
2.0
–0.3
—
Max
—
0.5
0.4
OV
DD
+ 0.3
0.8
± 30
Unit
V
V
V
V
V
μA
MPC8378E PowerQUICC
™
II Pro Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
73
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
