MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1501
MCIMX281AVM4B
Manufacturer Part Number
MCIMX281AVM4B
Description
IC MPU I.MX28 1.2 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(2327 pages)
2.MCIMX283DVM4B.pdf
(20 pages)
3.MCIMX281AVM4B.pdf
(72 pages)
Specifications of MCIMX281AVM4B
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
Supplier Unconfirmed
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Chapter 23
Timers and Rotary Decoder (TIMROT)
23.1 Timers and Rotary Decoder (TIMROT) Overview
The device implements four timers and a rotary decoder, as shown in
timers and decoder can take their inputs from any of the pins defined for PWM, rotary
encoders, or certain divisions from the 32-KHz clock input. Therefore, the PWM pins can
be inputs or outputs, depending on the application.
The timer/rotary decoder block is a programmed I/O interface connected to the APBX bus.
Recall that the APBX typically runs at a divided clock rate from the 24-MHz crystal clock.
Each timer and rotary channel can sample at a rate that is further subdivided from the APBX
clock. Each timer can select a different pre-scaler value.
Freescale Semiconductor, Inc.
ROTARY_B
ROTARY_A
32-kHz Osc.
Figure 23-1. Timers and Rotary Decoder Block Diagram
PWM[0]
PWM[1]
PWM[2]
PWM[3]
PWM[4]
PWM[5]
PWM[6]
PWM[7]
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
AHB Slave
APBX Master
ARM Core
Shared DMA
AHB
AHB-to-APBX Bridge
AHB Master
Programmable Registers
Timer/Rotary Decoder
SRAM
Timers and Rotary Decoder
Timer 2 2
Timer 3
Timer 0
Timer 1
Rotary Up/Down Counter
1/1, 1/ 2, 1/4, 1/8
1/1, 1/ 2, 1/4, 1/8
1/1, 1/ 2, 1/4, 1/8
1/1, 1/ 2, 1/4, 1/8
Divide
24-MHz
Figure
XTAL
by n
Osc.
23-1. The
1501
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