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参数资料
| 型号： | MPC8240LZU250X |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 250 MHz, RISC PROCESSOR, PBGA352 |
| 封装： | TBGA-352 |
| 文件页数： | 5/52页 |
| 文件大小： | 542K |
| 代理商： | MPC8240LZU250X |
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MPC8240 (rev0.5) Hardware Specifications
13
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Electrical and Thermal Characteristics
1.4.2 Thermal Characteristics
Table 6 provides the package thermal characteristics for the MPC8240.
1.4.3 AC Electrical Characteristics
This section provides the AC electrical characteristics for the MPC8240. After fabrication, functional parts
are sorted by maximum processor core frequency as shown in Table 7 and Section 1.4.3.1, “Clock AC
Specications” and tested for conformance to the AC specications for that frequency. The processor core
frequency is determined by the bus (PCI_SYNC_IN) clock frequency and the settings of the PLL_CFG[0–
4] signals. Parts are sold by maximum processor core frequency; see Section 1.9, “Ordering Information”.
Table 7 provides the operating frequency information for the MPC8240.
Table 6. Package Thermal Characteristics
Characteristic1
Symbols
Value
Units
Die Junction-to-Case Thermal Resistance
θJC
1.8
Die Junction-to-Board Thermal Resistance
θJB
4.8
°C/W
Notes:
1
Refer to Section 1.7, “System Design Information,” for more details about thermal management
.
Table 7. Operating Frequency
At recommended operating conditions (See Table 2) with GVdd = 3.3 V ± 5% and LVdd = 3.3 V ± 5%
Characteristic1
200 MHz
250 MHz
Units
Min
Max
Min
Max
Processor Frequency (CPU)
100
200
100
250
MHz
Memory Bus Frequency
33 – 100
MHz
PCI Input Frequency
25 – 66
MHz
Notes:
1
Caution: The PCI_SYNC_IN frequency and PLL_CFG[0–4] settings must be chosen such that the
resulting peripheral logic/ memory bus frequency, CPU (core) frequency, and PLL (VCO) frequencies
do not exceed their respective maximum or minimum operating frequencies. Refer to the
PLL_CFG[0–4] signal description in Section 1.6, “PLL Conguration,” for valid PLL_CFG[0–4] settings
and PCI_SYNC_IN frequencies.
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