MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 895

• Manufacturer Part Number: MCIMX286CVM4B
• Description: IC MPU I.MX286 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX286CVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

Chapter 11
Power Supply
11.1 Overview
This chapter describes the power supply subsystem provided on the i.MX28. It includes
sections on the DC-DC converter, linear regulators, PSWITCH pin functions, battery monitor
and charger, silicon speed sensor, thermal-overload protection circuit, bandgap reference
and programmable registers.
The i.MX28 integrates a comprehensive power supply subsystem, including the following
features:
Freescale Semiconductor, Inc.
• One integrated DC-DC converter that supports Li-Ion batteries.
• Four linear regulators directly power the supply rails from 5 V.
• Linear battery charger for Li-Ion cells.
• Battery voltage and brownout detection monitoring for VDDD, VDDA, VDDIO,
• Integrated current limiter from 5 V power source.
• Reset controller.
• System monitors for temperature and speed.
• Generates USB-Host 5V from Li-Ion battery (using PWM).
• Support for on-the-fly transitioning between 5V and battery power.
• VDD4P2, a nominal 4.2 V supply, is available when the i.MX28 is connected to a 5 V
• The 4.2 V regulated output also allows for programmable current limits:
VDDMEM, VDD4P2 and 5V supplies.
source and allows the DCDC to run from a 5 V source with a depleted battery-integrated
current limiter from 5 V power source.
a. Battery Charge current + DCDC input current < the 5 V current limit.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
895