參數(shù)資料
型號(hào): MC7448HX1420LC
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 1420 MHz, RISC PROCESSOR, CBGA360
封裝: 25 X 25 MM, 2.40 MM HEIGHT, 1.27 MM PITC, CERAMIC, BGA-360
文件頁(yè)數(shù): 32/66頁(yè)
文件大?。?/td> 793K
代理商: MC7448HX1420LC
MPC7448 RISC Microprocessor Hardware Specifications, Rev. 4
38
Freescale Semiconductor
System Design Information
These requirements are shown graphically in Figure 16.
Figure 16. MPC7448 Power Up Sequencing Requirements
Certain stipulations also apply to the manner in which the power rails of the MPC7448 power down, as
follows:
OVDD may ramp down any time before or after VDD.
The voltage at the SYSCLK input must not exceed VDD once VDD has ramped down below 0.9 V.
The voltage at the SYSCLK input must not exceed OVDD by more 20% during transients (see
overshoot/undershoot specifications in Figure 2) or 0.3 V DC (see Table 2) at any time.
AVDD
VDD
OVDD
SYSCLK
0.9 V
no restrictions between OVDD and VDD
0.9 V
limit imposed by VDD if OVDD ramps up first
limit imposed by OVDD if VDD ramps up first
100
μs (nominal) delay from VDD to AVDD
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