參數(shù)資料
型號: XRM48L950PGET
廠商: Texas Instruments
文件頁數(shù): 130/176頁
文件大小: 0K
描述: MCU 16/32Bit FLASH 3MB 144LQFP
標(biāo)準(zhǔn)包裝: 1
系列: Hercules™ ARM® RM4x
應(yīng)用: 工業(yè)安全,醫(yī)療
核心處理器: ARM? Cortex? - R4F
程序存儲器類型: 閃存(3MB)
控制器系列: RM4
RAM 容量: 256K x 8
接口: CAN,以太網(wǎng),I²C,LIN,MibSPI,SCI,SPI,USB
輸入/輸出數(shù): 64
電源電壓: 1.14 V ~ 3.6 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 144-LQFP
包裝: 托盤
供應(yīng)商設(shè)備封裝: 144-LQFP(20x20)
其它名稱: 296-29389
SPNS174A – APRIL 2012 – REVISED SEPTEMBER 2013
4.3
Power Sequencing and Power On Reset
4.3.1
Power-Up Sequence
There is no timing dependency between the ramp of the VCCIO and the VCC supply voltage. The power-
up sequence starts with the I/O voltage rising above the minimum I/O supply threshold, (see Table 4-4 for
more details), core voltage rising above the minimum core supply threshold and the release of power-on
reset. The high frequency oscillator will start up first and its amplitude will grow to an acceptable level. The
oscillator start up time is dependent on the type of oscillator and is provided by the oscillator vendor. The
different supplies to the device can be powered up in any order.
The device goes through the following sequential phases during power up.
Table 4-3. Power-Up Phases
Oscillator start-up and validity check
1032 oscillator cycles
eFuse autoload
1180 oscillator cycles
Flash pump power-up
688 oscillator cycles
Flash bank power-up
617 oscillator cycles
Total
3517 oscillator cycles
The CPU reset is released at the end of the above sequence and fetches the first instruction from address
0x00000000.
Copyright 2012–2013, Texas Instruments Incorporated
System Information and Electrical Specifications
57
Product Folder Links: RM48L950 RM48L750 RM48L550
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