MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1369
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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19.4.6 On-Chip Memories Read Margin Register
The On-Chip Memories Read Margin Register provide speed select settings for numerous
memories.
HW_DIGCTL_READ_MARGIN: 0x050
HW_DIGCTL_READ_MARGIN_SET: 0x054
HW_DIGCTL_READ_MARGIN_CLR: 0x058
HW_DIGCTL_READ_MARGIN_TOG: 0x05C
This register controls various parts of the on-chip RAM and ROM, including the sense amp
configuration.
Address:
Re-
19.4.7 Software Write-Once Register (HW_DIGCTL_WRITEONCE)
The Software Write-Once Register hold the value used in software certification management.
This register is used to hold a portion of a certificate that is not mutable after software
initialization.
EXAMPLE
Freescale Semiconductor, Inc.
set
Bit
W
R
31
0
RSVD0
ROM
Field
31 4
3 0
30
0
HW_DIGCTL_WRITEONCE.U = my_certificate;
29
0
(HW_DIGCTL_READ_MARGIN)
HW_DIGCTL_READ_MARGIN
28
0
Reserved.
This field is used for setting the read margin for the On-Chip ROM. It programs the sense amp differential
setting and allows the trade off between speed and robustness. This field should not be changed unless
instructed by Freescale.
27
0
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
HW_DIGCTL_READ_MARGIN field descriptions
24
0
23
0
22
0
21
0
20
0
8001_C000h base + 50h offset = 8001_C050h
19
0
RSVD0
18
0
17
0
16
0
15
0
Description
Chapter 19 Digital Control (DIGCTL) and On-Chip RAM
14
0
13
0
12
0
11
0
10
0
0
9
0
8
0
7
0
6
0
5
0
4
3
0
ROM
0
2
1
1
1369
0
0
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