參數(shù)資料
型號: MPC8544DS
廠商: Freescale Semiconductor
文件頁數(shù): 76/117頁
文件大?。?/td> 0K
描述: BOARD DEVELOPMENT SYSTEM 8544
標準包裝: 1
系列: PowerQUICC III™
類型: MPU
適用于相關產品: MPC8544
所含物品:
相關產品: MPC8544EDVTANG-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EDVTALF-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EAVTARJ-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EAVTAQG-ND - IC MPU POWERQUICC III 783-FCBGA
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MPC8544EAVTALF-ND - IC MPU POWERQUICC III 783-FCBGA
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MPC8544DVTALF-ND - IC MPU POWERQUICC III 783-FCBGA
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MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 6
Freescale Semiconductor
61
PCI
14.2
GPIO AC Electrical Specifications
Table 54 provides the GPIO input and output AC timing specifications.
Figure 40 provides the AC test load for the GPIO.
Figure 40. GPIO AC Test Load
15 PCI
This section describes the DC and AC electrical specifications for the PCI bus of the MPC8544E.
15.1
PCI DC Electrical Characteristics
Table 55 provides the DC electrical characteristics for the PCI interface.
Table 54. GPIO Input AC Timing Specifications
Parameter
Symbol
Typ
Unit
Notes
GPIO inputs—minimum pulse width
tPIWID
20
ns
1
Note:
1. GPIO inputs and outputs are asynchronous to any visible clock. GPIO outputs should be synchronized before use by any
external synchronous logic. GPIO inputs are required to be valid for at least tPIWID ns to ensure proper operation.
Table 55. PCI DC Electrical Characteristics 1
Parameter
Symbol
Min
Max
Unit
Notes
High-level input voltage
VIH
2OVDD + 0.3
V
Low-level input voltage
VIL
–0.3
0.8
V
Input current (VIN = 0 V or VIN = VDD)IIN
—±5
μA2
High-level output voltage (OVDD = min, IOH = –2mA)
VOH
2.4
V
Low-level output voltage (OVDD = min, IOL = 2 mA)
VOL
—0.4
V
Notes:
1. Ranges listed do not meet the full range of the DC specifications of the PCI 2.2 Local Bus Specifications.
2. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Output
Z0 = 50 Ω
OVDD/2
RL = 50 Ω
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