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参数资料
| 型号： | MC7447AVS1000LB |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 1000 MHz, RISC PROCESSOR, CBGA360 |
| 封装： | 25 X 25 MM, 2.20 MM HEIGHT, 1.27 MM PITCH, ROHS COMPLIANT, CERAMIC, LGA-360 |
| 文件页数： | 7/58页 |
| 文件大小： | 1095K |
| 代理商： | MC7447AVS1000LB |
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MPC7447A RISC Microprocessor Hardware Specifications, Rev. 5
Freescale Semiconductor
15
Electrical and Thermal Characteristics
Figure 3 provides the SYSCLK input timing diagram.
Figure 3. SYSCLK Input Timing Diagram
Table 8. Clock AC Timing Specifications
At recommended operating conditions. See Table 4.
Characteristic
Symbol
Maximum Processor Core Frequency
Unit Notes
1000 MHz
1267 MHz
1333 MHz
1420 MHz
Min
Max
Min
Max
Min
Max
Min
Max
Processor core frequency
fcore
600
1000
600
1267
600
1333
600
1420
MHz 1, 8, 9
VCO frequency
fVCO
1200
2000
1200
2533
1200
2667
1200
2840
MHz
1, 9
SYSCLK frequency
fSYSCLK
33
167
33
167
33
167
33
167
MHz 1, 2, 8
SYSCLK cycle time
tSYSCLK
6.0
30
6.0
30
6.0
30
6.0
30
ns
2
SYSCLK rise and fall time
tKR, tKF
—1.0
—
1.0
—
1.0
ns
3
SYSCLK duty cycle measured at
OVDD/2
tKHKL/
tSYSCLK
40
60
40
60
40
60
40
60
%
4
SYSCLK cycle-to-cycle jitter
—
150
—
150
—
150
—
150
ps
5, 6
Internal PLL relock time
—
100
—
100
—
100
—
100
μs7
Notes:
1. Caution: The SYSCLK frequency and PLL_CFG[0:4] settings must be chosen such that the resulting SYSCLK (bus)
frequency, processor core frequency, and PLL (VCO) frequency do not exceed their respective maximum or minimum
operating frequencies. Refer to the PLL_CFG[0:4] signal description in Section 9.1.1, “PLL Configuration,” for valid
PLL_CFG[0:4] settings.
2. Assumes a lightly-loaded, single-processor system.
3. Rise and fall times for the SYSCLK input measured from 0.4 to 1.4 V.
4. Timing is guaranteed by design and characterization.
5. Guaranteed by design.
6. The SYSCLK driver’s closed loop jitter bandwidth should be less than 1.5 MHz at –3 dB.
7. Relock timing is guaranteed by design and characterization. PLL relock time is the maximum amount of time required
for PLL lock after a stable VDD and SYSCLK are reached during the power-on reset sequence. This specification also
applies when the PLL has been disabled and subsequently re-enabled during sleep mode. Also note that HRESET
must be held asserted for a minimum of 255 bus clocks after the PLL relock time during the power-on reset sequence.
8. Caution: If DFS is enabled, the SYSCLK frequency and PLL_CFG[0:4] settings must be chosen such that the
resulting processor frequency is greater than or equal to the minimum core frequency.
9. Caution: These values specify the maximum processor core and VCO frequencies when the device is operated at
the nominal core voltage. If operating the device at the derated core voltage, the processor core and VCO frequencies
must be reduced. See Section 5.3, “Voltage and Frequency Derating,” for more information.
SYSCLK
VM
CVIH
CVIL
VM = Midpoint Voltage (OVDD/2)
tSYSCLK
tKR
tKF
tKHKL
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