GPIO
14.2 Timer AC Timing Specifications
Table 48 provides the timer input and output AC timing specifications.
1
Table 48. Timers Input AC Timing Specifications
Parameter
Symbol2
Min
Unit
ns
Timers inputs—minimum pulse width
Notes:
tTIWID
20
1. Input specifications are measured from the 50 percent level of the signal to the 50 percent level of the rising edge of CLKIN.
Timings are measured at the pin.
2. Timer inputs and outputs are asynchronous to any visible clock. Timer outputs should be synchronized before use by external
synchronous logic. Timer inputs are required to be valid for at least tTIWID ns to ensure proper operation.
15 GPIO
This section describes the DC and AC electrical specifications for the GPIO.
15.1 GPIO DC Electrical Characteristics
Table 49 provides the DC electrical characteristics for the MPC8347EA GPIO.
Table 49. GPIO DC Electrical Characteristics
PArameter
Symbol
Condition
Min
Max
Unit
Input high voltage
Input low voltage
Input current
VIH
VIL
—
—
2.0
–0.3
—
OVDD + 0.3
V
V
0.8
5
IIN
—
μA
V
Output high voltage
Output low voltage
Output low voltage
VOH
VOL
IOH = –8.0 mA
IOL = 8.0 mA
IOL = 3.2 mA
2.4
—
—
0.5
0.4
V
V
—
V
OL
15.2 GPIO AC Timing Specifications
Table 50 provides the GPIO input and output AC timing specifications.
1
Table 50. GPIO Input AC Timing Specifications
Parameter
Symbol2
Min
Unit
GPIO inputs—minimum pulse width
tPIWID
20
ns
Notes:
1. Input specifications are measured from the 50 percent level of the signal to the 50 percent level of the rising edge of CLKIN.
Timings are measured at the pin.
2. GPIO inputs and outputs are asynchronous to any visible clock. GPIO outputs should be synchronized before use by external
synchronous logic. GPIO inputs must be valid for at least tPIWID ns to ensure proper operation.
MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12
Freescale Semiconductor
51
FREESCALE [ Freescale ]
