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
Min
Max
Unit
Output high voltage
VOH
IOH = –8.0 mA
2.4
—
V
Output low voltage
VOL
IOL = 8.0 mA
—
0.5
V
Output low voltage
VOL
IOL = 3.2 mA
—
0.4
V
Input high voltage
VIH
—2.1
NVDD +0.3
V
Input low voltage
VIL
—–0.3
0.8
V
Input current
IIN
0 V
V
IN NVDD
—
± 5
A
Table 46. Timers Input AC Timing Specifications
Characteristic
Symbol1
Min
Unit
Timers inputs—minimum pulse width
tTIWID
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 tTIWID ns to ensure proper operation
Output
Z0 = 50
NVDD/2
RL = 50