MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1506

• 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

Timer
In the duty cycle mode, Timer 3 samples the free-running counter at the rising and falling
edges of the input test signal, resetting the free-running counter on the same clock that is
sampled.
1506
• On the rising edge of the test signal, the free-running count is copied to the
• On the falling edge of the source clock, the free-running count is copied to the
• Once duty cycle mode is programmed and the input signal is stable, software should
• This bit is automatically set and cleared by the hardware. When this bit is set, count
LOW_RUNNING_COUNT bit field of the HW_TIMROT_TIMCOUNT3 register.
HIGH_FIXED_COUNT bit field (as shown in
poll the DUTY_VALID bit in the HW_TIMROT_TIMCTRL3 register.
values in the HW_TIMROT_TIMCOUNT3 register are stable and ready to be read.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
NEVER TICK
Figure 23-5. Pulse-Width Measurement Mode
ROTARY_B
ROTARY_A
ALWAYS TICK
PWM[0]
PWM[1]
PWM[2]
PWM[5]
PWM[3]
PWM[4]
PWM[6]
PWM[7]
32-kHz
Input
Input
Timer I/O
24-MHz
32-Bit Fixed count
XTAL
Osc.
Figure 23-4. Timer 3 Detail
32-Bit Low Count
Divide
by n
Hold, load,
Detect
Low Count
Edge
copy
APBX clk
Controller
Tick
Mode
Divide by
1, 2, 4, 8
High Count
Figure
Hold, down,
load, copy
LVL
32-Bit Running Count
Gated clk
23-5).
Freescale Semiconductor, Inc.