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Consumer and Industrial/General Embedded Market
i.MX233 Applications Processor
32-bit Embedded Microprocessor – ARM
®
Overview
The i.MX233 applications processor extends
Freescale’s ARM9 portfolio and introduces
several unique features such as power
management, analog audio, 12-bit ADC’s and
a touch screen controller that allows customers
to eliminate external components, reducing
their overall system bill of materials cost. The
i.MX233 integrates industry-leading power
management technology to manage the power
sequencing required by the processor itself
and supplies power to other components in
the system, such as external memories, from
a single Li-Ion battery. Additionally, analog
audio features such as the stereo ADC/DAC
and amplifiers, plus a mono speaker amplifier
provide a complete solution in a single device
for multimedia applications. Furthermore, many
consumer applications require a rich graphical
user interface which is supported with the LCD
touch screen controller and basic hardware
graphics acceleration with the pixel pipeline
processor.
The i.MX233 is offered in two packages to
provide more tailored options for the various
target applications. The 169 BGA package
provides access to all of the features of the
i.MX233. The 128 LQFP package provides
a subset of these features in order to fit into
the smaller pin count package. This smaller
package option is ideal for cost-sensitive entry
level applications that use small displays, don't
require touchscreen user interface and have
manufacturing restrictions (number of board
layers). The feature differences are shown in the
block diagram and table.
Target applications
• PortableMediaPlayers
• PortableNavigationDevices
• HomeAppliances
• GraphicalRemoteControls
• HomeAutomation
• eBooks
• DigitalPictureFrames
• Audioperipheralsandaccessories
• VoIPHandsets
• Simplehumanmachineinterface(HMI)
panels for industrial applications
Key Features
CPU
• ARM926EJ-S™runsupto454MHz
• 16KBI&DL1Cache
Power Management
• IntegratedDC-DCconverterwithmultiple
channel outputs
• SupportsLi-Ionbatteries
• Directpowerfrom5Vsource(USB,wall
power or other source)
• Batterychargingcapability
• On-chipsiliconspeedandtempsensors
Connectivity
• High-SpeedUSBHost/Devicewith
integratedPHY
• UART
• Serialperipheralinterfaces(SPI)
• 12-bitLow-ResolutionADC(LRADC)
• 3.3VgeneralpurposeI/O
Multimedia and Graphics Processing
• Displaycontrolleroptimizedforupto
24-bit-per-pixelVGA(640x480)resolution
• Pixelprocessingpipeline(PXP)tohandle
post display frame pre-processing in
hardware with minimal memory overhead
• TVEncoderand10-bitVideoDACout
Memory
• Internal32KBSRAM
• SupportforexternalDDR1,mDDR
• SupportforexternalNANDwithhardware
errorcorrection(20-bitBCHor8-bit
ReedSolomon)
• SupportforexternalmanagedNANDs
viaSDIO
Audio
• StereoanalogaudioADC/DAC
• Stereoheadphoneamplifier
• 1.5Wmonospeakeramplifieroutput
• S/PDIFdigitaloutput
• SerialAudioInterface(I2S)
Benefits
CPU Performance and Low Power
454MHzARM9CPUwithampleheadroom
for many consumer and embedded
applications without sacrificing battery life.
For plugged in “always on” devices, the low
power consumption of the i.MX233
can improve energy efficiency.
Simplified Development
The integration of mixed-signal analog such
as power management, analog audio and
A/D channels reduces system complexity
and speeds time-to-market. In addition, an
imageprocessingunitsupporting24-bitVGA
displays is integrated to provide rich user
interfaces.Withawiderangeofconnectivity
options,suchasUART,SDIO,USBandI
2
C,
the i.MX233 processor provides the ability to
connect wirelessly to other devices, through
the use of off-chip Bluetooth
™
,Wi-Fiandother
wireless protocols.
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