参数资料
型号: MPC8377EWLANB
厂商: Freescale Semiconductor
文件页数: 100/127页
文件大小: 0K
描述: ACCESS POINT/ROUTER MPC8377
标准包装: 1
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
74
Freescale Semiconductor
17 Timers
This section describes the DC and AC electrical specifications for the timers of the chip.
17.1
Timers DC Electrical Characteristics
This table provides the DC electrical characteristics for the device timers pins, including TIN, TOUT,
TGATE, and RTC_CLK.
17.2
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 46. Timers AC Test Load
Table 63. Timers DC Electrical Characteristics
Parameter
Condition
Symbol
Min
Max
Unit
Output high voltage
IOH = –6.0 mA
VOH
2.4
V
Output low voltage
IOL = 6.0 mA
VOL
—0.5
V
Output low voltage
IOL = 3.2 mA
VOL
—0.4
V
Input high voltage
VIH
2.0
OVDD + 0.3
V
Input low voltage
VIL
–0.3
0.8
V
Input current
0 V
≤ VIN ≤ OVDD
IIN
± 30
μA
Table 64. Timers Input AC Timing Specifications1
Parameter
Symbol 2
Min
Unit
Timers inputs—minimum pulse width
tTIWID
20
ns
Notes:
1. Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN. Timings are
measured at the pin.
2. 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 Ω
OVDD/2
RL = 50 Ω
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