MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1527
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
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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23.4.17 Timer 3 Count Register (HW_TIMROT_FIXED_COUNT3)
The Timer 3 fixed Count Register contains the timer fixed counter values for Timer 3.
NOTE: This timer can be put in a special duty cycle mode that will measure the duty cycle
of an input test signal.
The definitions of the fields change depending whether the timer is in normal or duty cycle
mode.
EXAMPLE
HW_TIMROT_FIXED_COUNTn_WR(3, 0x0000f0dd);
Address:
Re-
23.4.18 Timer 3 Match Count Register (HW_TIMROT_MATCH_COUNT3)
The Timer 3 Match Count Register contains the match timer counter values for Timer 3.
EXAMPLE
Freescale Semiconductor, Inc.
set
LOW_RUNNING_
Bit
W
R
HIGH_FIXED_
31
0
COUNT
COUNT
Field
31 0
Field
31 0
30
0
29
0
HW_TIMROT_FIXED_COUNT3 8006_8000h base + 100h offset = 8006_8100h
28
0
In duty cycle mode, this bit field is loaded from the running counter when it has just finished measuring the
low portion of the duty cycle. In normal timer mode, it shows the running count as a read-only value.
Software loads the fixed count bit field with the value to down count.
If the reload bit is set to one, then the new value will be loaded into the running count the next time it reaches
zero.
If the update bit is set to one, then the new value is also copied into the running count, immediately.
If both the reload and update bits are set to zero, then the new value is never picked up by the running count.
In duty cycle mode, this bit field is loaded from the running counter when it has finished measuring the high
portion of the duty cycle.
27
0
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_TIMROT_RUNNING_COUNT3 field descriptions
25
0
HW_TIMROT_FIXED_COUNT3 field descriptions
24
0
23
0
22
0
21
0
20
0
19
0
HIGH_FIXED_COUNT
18
0
// Set up timer fixed count
17
0
16
0
15
0
Description
Description
14
0
13
0
Chapter 23 Timers and Rotary Decoder (TIMROT)
12
0
11
0
10
0
0
9
0
8
0
7
0
6
0
5
0
4
3
0
0
2
0
1
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