MCIMX503CVM8B datasheet(29/134 Pages) FREESCALE

部件名	MCIMX503CVM8B

功能描述	i.MX50 Applications Processors for Consumer Products

PDF	134 Pages

Scroll/Zoom	100%

制造商	FREESCALE [Freescale Semiconductor, Inc]

网页	http://www.freescale.com

标志

29 / 134 page

Electrical Characteristics

i.MX50 Applications Processors for Consumer Products, Rev. 2

Freescale Semiconductor

4.2.1

Power-Up Sequence

Figure 2 shows the power-up sequence.

Figure 2. Power-Up Sequence

NOTE

1) The POR_B input must be immediately asserted at power-up and remain

asserted until after the last power rail is at its working voltage.

2) No power-up sequence dependencies exist between the supplies shown

shaded in gray.

4.2.2

Power-Down Sequence

The power-down sequence is recommended to be the opposite of the power-up sequence. In other words,

the same power supply constraints exist while powering off as while powering on.

4.2.3

Resume Sequence

When the i.MX50 is resuming from STOP mode, there are some special sequencing considerations. The

resume timing is determined by the following internal counters:

1. STBY_COUNT. This register is in the CCM block and may be set to a maximum of 16 x 32 kHz

cycles, or 500

μsec.

MCIMX503CVM8B 数据表(PDF) 29 Page - Freescale Semiconductor, Inc