MCIMX287CVM4B Freescale, MCIMX287CVM4B Datasheet - Page 18

• Manufacturer Part Number: MCIMX287CVM4B
• Manufacturer: Freescale

Specifications of MCIMX287CVM4B

• Lead Free Status / RoHS Status: Compliant

3.1.5
Table 21
3.1.6
There is no special power-up sequence. After applying 5 V or battery in any order, the rest of the power
supplies are internally generated and automatically come up in a safe way.
There is no special power-down sequence. 5 V or the battery can be removed at any time.
3.1.7
Because the i.MX28 is a PMU and an SoC, power-on reset is generated internally and there is no timing
requirement on external pins.
The i.MX28 can be reset by asserting the exernal pin RESETN for at least 100 mS and later deasserting
RESETN.
If the reset occurs while the device only powered by the battery, then the reset kills all of the power
supplies; and the system reboots on the assertion of PSWITCH, or immediately if auto-restart is set up
ahead of time.
If the chip is powered by 5 V, then the reset serves to reset the digital sections of the chip. If the DCDC is
operating at the time of the reset, then power switches back to the default linear regulators powered by 5 V.
18
ARM Core
USB0 PLL (System PLL)
OSC24M
OSC32K
DCDC
RTC
Other Modules
Powered by battery (mA)
Powered by 5 V (mA)
Core/Clock/Module
describes the core, clock, and module settings for the different power modes of the processor.
Power Modes
Supply Power-Up/Power-Down Requirements
Reset Timing
i.MX28 Applications Processor Data Sheet for Consumer Products, Rev. 0
TYP
MAX
TYP
MAX
Deep-Sleep
Table 21. Power Mode Settings
13.5uA
30uA
TBD
TBD
Off
Off
Off
On
Off
On
Off
Standby
TBD
TBD
TBD
TBD
Off
Off
On
On
On
On
Off
Active@300 MHz
Run (300 MHz)
TBD
TBD
TBD
TBD
On
On
On
On
On
On
Freescale Semiconductor
Active@454 MHz
Run (454 MHz)
TBD
TBD
TBD
TBD
On
On
On
On
On
On