MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1366
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
- Current page: 1366 of 2327
- Download datasheet (17Mb)
Programmable Registers
19.4.3 Free-Running HCLK Counter Register
The Free-Running HCLK Counter Register is available for performance metrics. This
counter increments once per HCLK rising edge.
HW_DIGCTL_HCLKCOUNT: 0x020
HW_DIGCTL_HCLKCOUNT_SET: 0x024
HW_DIGCTL_HCLKCOUNT_CLR: 0x028
HW_DIGCTL_HCLKCOUNT_TOG: 0x02C
EXAMPLE
Address:
Re-
1366
set
PACKAGE_TYPE
Bit
W
R
JTAG_IN_USE
WRITTEN
31
0
COUNT
RSVD0
Field
23 5
Field
31 0
3 1
30
4
0
0
Duration
StartTime = HW_DIGCTL_HCLKCOUNT;
// Do something you want timed here
EndTime = HW_DIGCTL_HCLKCOUNT;
29
0
(HW_DIGCTL_HCLKCOUNT)
HW_DIGCTL_HCLKCOUNT
28
0
Reserved.
This read-only bit is a 1 if JTAG debugger usage has been detected.
This read-only bit field returns the pin count and package type. 000=289BGA, 001-111=Reserved.
Set to 1 by any successful write to the HW_DIGCTL_WRITEONCE register.
This counter counts up from reset using HCLK. The count is valid for HCLK frequencies greater than 2 MHz.
27
0
26
0
= EndTime - StartTime; // make sure to handle rollover in a real application
HW_DIGCTL_STATUS field descriptions (continued)
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
HW_DIGCTL_HCLKCOUNT field descriptions
24
0
23
0
22
0
21
0
8001_C000h base + 20h offset = 8001_C020h
20
0
19
0
18
0
17
0
COUNT
16
0
15
0
Description
Description
14
0
13
0
12
0
11
0
10
0
0
9
0
8
Freescale Semiconductor, Inc.
0
7
0
6
0
5
0
4
3
0
0
2
0
1
0
0
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