MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1502

• 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
23.2 Timer
There are two running mode for each timer. One is fixed count mode and the other is match
count mode. By default Timer works in fixed count mode, and match count mode can be
enabled by writing 1'b1 to bit MATCH_MODE of register TIMERx Control and Status
Register (x = 0-3).
23.2.1 Fixed count mode
In this mode, the timer consists of a 32-bit fixed count value and a 32-bit free-running count
value. The free running count decrements until it reaches 0 where it sets an interrupt status
bit associated with the counter.
Figure 23-2
1502
• If the RELOAD bit is set to 1, then the fixed count is automatically copied to the
• If the RELOAD bit is not set, the timer stalls when it reaches 0.
free-running counter and the count continues.
shows a detailed view of each timer in fixed count mode.
Figure 23-2. Timer 0, Timer 1, Timer 2 or Timer 3 Detail
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
NEVER TICK
ROTARY_A
ROTARY_B
ALWAYS TICK
PWM[0]
PWM[1]
PWM[2]
PWM[3]
PWM[4]
PWM[5]
PWM[6]
PWM[7]
32-kHz
Input
32-Bit Match Count
Timer I/O
24-MHz
XTAL
Osc.
Divide
by n
Detect
Edge
APBX clk
Controller
Tick
Mode
Divide by
1, 2, 4, 8
match_mode == 1
32-Bit Running Count
== match & match_mode
Gated clk
?
Freescale Semiconductor, Inc.