Datasheet

MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
56 Freescale Semiconductor
GPIO
17 GPIO
This section describes the DC and AC electrical specifications for the GPIO of MPC8308
17.1 GPIO DC Electrical Characteristics
This table provides the DC electrical characteristics for the GPIO.
17.2 GPIO AC Timing Specifications
This table provides the GPIO input and output AC timing specifications.
This figure provides the AC test load for the GPIO.
Figure 48. GPIO AC Test Load
Table 47. GPIO DC Electrical Characteristic
Characteristic Symbol Condition Min Max Unit
Output high voltage V
OH
I
OH
=–8.0mA 2.4 — V
Output low voltage V
OL
I
OL
=8.0mA — 0.5 V
Output low voltage V
OL
I
OL
=3.2mA — 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
0V V
IN
 NV
DD
— ± 5 A
Table 48. GPIO Input AC Timing Specifications
Characteristic Symbol
1
Min Unit
GPIO inputs—minimum pulse width t
PIWID
20 ns
Note:
1. GPIO inputs and outputs are asynchronous to any visible clock. GPIO outputs should be synchronized
before use by any external synchronous logic. GPIO inputs are required to be valid for at least t
PIWID
ns to
ensure proper operation.
Output
Z
0
= 50 
NV
DD
/2
R
L
= 50 