參數(shù)資料
型號(hào)： EFM32-TG-STK3300
廠商： Energy Micro
文件頁數(shù)： 25/136頁
文件大小： 0K
描述： KIT STARTER EFM32 GECKO
特色產(chǎn)品： EFM32 Tiny Gecko
標(biāo)準(zhǔn)包裝： 1
系列： EFM®32
類型： MCU
適用于相關(guān)產(chǎn)品： EFM32-TGXXX
所含物品： 板，線纜，CD 和文檔
其它名稱： 914-1018
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
120
www.energymicro.com
Table 4.47 (p. 120) shows the AP encodings that define the access permissions for privileged and
unprivileged software.
Table 4.47. AP encoding
AP[2:0]
Privileged
permissions
Unprivileged
permissions
Description
000
No access
All accesses generate a permission fault
001
RW
No access
Access from privileged software only
010
RW
RO
Writes by unprivileged software generate a permission fault
011
RW
Full access
100
Unpredictable
Reserved
101
RO
No access
Reads by privileged software only
110
RO
Read only, by privileged or unprivileged software
111
RO
Read only, by privileged or unprivileged software
4.5.7 MPU mismatch
When an access violates the MPU permissions, the processor generates a memory management fault,
see Section 2.1.4 (p. 13) . The MMFSR indicates the cause of the fault. See Section 4.3.11.1 (p. 105)
for more information.
4.5.8 Updating an MPU region
To update the attributes for an MPU region, update the RNR, RBAR and RASR registers. You can
program each register separately, or use a multiple-word write to program all of these registers. You can
use the RBAR and RASR aliases to program up to four regions simultaneously using an STM instruction.
4.5.8.1 Updating an MPU region using separate words
Simple code to configure one region:
; R1 = region number
; R2 = size/enable
; R3 = attributes
; R4 = address
LDR R0,=MPU_RNR
; 0xE000ED98, MPU region number register
STR R1, [R0, #0x0]
; Region Number
STR R4, [R0, #0x4]
; Region Base Address
STRH R2, [R0, #0x8]
; Region Size and Enable
STRH R3, [R0, #0xA]
; Region Attribute
Disable a region before writing new region settings to the MPU if you have previously enabled the region
being changed. For example:
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EFM32TG-STK3300 制造商:Energy Micro AS 功能描述:STARTER KIT STK3300 TINY GEC 制造商:Energy Micro AS 功能描述:STARTER KIT, STK3300, TINY GECKO; Silicon Manufacturer:Energy Micro; Core Architecture:ARM; Core Sub-Architecture:Cortex-M3; Silicon Core Number:EFM32TG840; Silicon Family Name:EFM32; Kit Contents:Starter Kit EFM32TG840; SVHC:No SVHC;RoHS Compliant: Yes
EFM32WG230F128 功能描述:ARM微控制器 - MCU 128kb flash 32kb RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
EFM32WG230F128-QFN64 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, WONDER GECKO - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64QFN
EFM32WG230F128-QFN64T 制造商:Energy Micro AS 功能描述:WONDER GECKO 32 BIT ARM CORTEX MCU - Trays
EFM32WG230F128-QFN64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64QFN
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