參數(shù)資料
型號(hào): MPC9855
廠商: Motorola, Inc.
英文描述: Clock Generator for PowerQUICC and PowerPC Microprocessors
中文描述: 微處理器時(shí)鐘發(fā)生器為PowerQUICC和PowerPC
文件頁數(shù): 7/12頁
文件大?。?/td> 267K
代理商: MPC9855
Timing Solutions
Freescale Semiconductor
7
MPC9855
Table 7. LVPECL DC Characteristics
(T
A
= –40°C to 85°C)
(1)
1. AC characteristics are design targets and pending characterization.
2. V
PP
is the minimum differential input voltage swing required to maintain AC characteristics including t
PD
and device-to-device skew.
3. V
CMR
(AC) is the crosspoint of the differential input signal. Normal AC operation is obtained when the crosspoint is within the V
CMR
(AC)
range and the input swing lies within the V
PP
(AC) specification. Violation of V
CMR
(AC) or V
PP
(AC) impacts the device propagation delay,
device and part-to-part skew.
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
Differential LVPECL clock inputs (CLK1, CLK1) for V
DD
= 3.3 V
±
0.5%
V
PP
Differential Voltage
(2)
(peak-to-peak)
(LVPECL)
250
mV
V
CMR
Differential Input Crosspoint Voltage
(3)
(LVPECL)
1.0
V
DD
– 0.6
V
Table 8. LVCMOS I/O DC Characteristics
(T
A
= –40°C to 85°C)
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
LVCMOS for V
DD
= 3.3 V
±
5%
V
IH
Input High Voltage
2.0
V
DD
+ 0.3
V
LVCMOS
V
IL
Input Low Voltage
0.8
V
LVCMOS
I
IN
Input Current
(1)
1. Inputs have pull-down resistors affecting the input current.
200
μ
A
V
IN
= V
DDL
or GND
LVCMOS for V
DD
= 3.3 V
±
5%, V
DDOA
= 3.3 V
±
5%, V
DDOB
= 3.3 V
±
5%
V
OH
Output High Voltage
2.4
V
I
OH
= –12 mA
V
OL
Output Low Voltage
0.4
V
I
OL
= 12 mA
Z
OUT
Output Impedance
14 – 17
LVCMOS for V
DD
= 3.3 V
±
5%, V
DDOA
= 2.5 V
±
5%, V
DDOB
= 2.5 V
±
5%
V
OH
Output High Voltage
1.9
V
I
OH
= –10 mA
V
OL
Output Low Voltage
0.4
V
I
OL
= 10 mA
Z
OUT
Output Impedance
18 – 22
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