參數(shù)資料
型號: MSC7115VM800
廠商: Freescale Semiconductor
文件頁數(shù): 37/56頁
文件大?。?/td> 0K
描述: IC DSP PROCESSOR 16BIT 400MAPBGA
標準包裝: 90
系列: StarCore
類型: SC1400 內(nèi)核
接口: 主機接口,I²C,UART
時鐘速率: 200MHz
非易失內(nèi)存: 外部
芯片上RAM: 400kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.20V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 400-LFBGA
供應(yīng)商設(shè)備封裝: 400-MAPBGA(17x17)
包裝: 托盤
MSC7115 Low-Cost 16-bit DSP with DDR Controller Data Sheet, Rev. 11
Hardware Design Considerations
Freescale Semiconductor
42
3.2.2.3
Case 3
The power-up sequence is as follows:
1.
Turn on the VDDIO (3.3 V) supply first.
2.
Turn on the VDDC (1.2 V) supply second.
3.
Turn on the VDDM (2.5 V) and VREF (1.25 V) supplies simultaneously (third).
Note:
Make sure that the time interval between the ramp-up of VDDIO and VDDC is less than 10 ms.
The power-down sequence is as follows:
1.
Turn off the VDDM (2.5 V) and VREF (1.25 V) supplies simultaneously (first).
2.
Turn off the VDDC (1.2 V) supply second.
3.
Turn of the VDDIO (3.3 V) supply third (last).
Use the following guidelines:
Make sure that the time interval between the ramp-down for VDDIO and VDDC is less than 10 ms.
Make sure that the time interval between the ramp-up or ramp-down time for VDDC and VDDM is less than 10 ms for
power-up and power-down.
Refer to Figure 28 for relative timing for Case 3.
Figure 28. Voltage Sequencing Case 3
Time
V
o
lt
age
Ramp-down
Ramp-up
VDDIO = 3.3 V
VDDM = 2.5 V
VDDC = 1.2 V
VREF = 1.25 V
<10 ms
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