Datasheet

MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
Freescale Semiconductor 55
Timers
16 Timers
This section describes the DC and AC electrical specifications for the timers.
16.1 Timers DC Electrical Characteristics
This table provides the DC electrical characteristics for the MPC8308 timers pins, including TIN, TOUT,
and TGATE.
16.2 Timers AC Timing Specifications
This table provides the timers input and output AC timing specifications.
This figure
provides the AC test load for the Timers.
Figure 47. Timers AC Test Load
Table 45. Timers DC Electrical Characteristics
Characteristic Symbol Condition Min Max Unit
Output high voltage V
OH
I
OH
= –8.0 mA 2.4 — V
Output low voltage V
OL
I
OL
= 8.0 mA — 0.5 V
Output low voltage V
OL
I
OL
= 3.2 mA — 0.4 V
Input high voltage V
IH
—2.1NV
DD
+0.3 V
Input low voltage V
IL
—–0.30.8V
Input current I
IN
0 V V
IN
NV
DD
— ± 5 A
Table 46. Timers Input AC Timing Specifications
Characteristic Symbol
1
Min Unit
Timers inputs—minimum pulse width t
TIWID
20 ns
Notes:
1. Timers inputs and outputs are asynchronous to any visible clock. Timers outputs should be synchronized before use by any
external synchronous logic. Timers inputs are required to be valid for at least t
TIWID
ns to ensure proper operation
Output
Z
0
= 50 
NV
DD
/2
R
L
= 50 