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参数资料
型号： EFM32-TG-STK3300
厂商： Energy Micro
文件页数： 45/136页
文件大小： 0K
描述： KIT STARTER EFM32 GECKO
特色产品： EFM32 Tiny Gecko
标准包装： 1
系列： EFM®32
类型： MCU
适用于相关产品： EFM32-TGXXX
所含物品： 板，线缆，CD 和文档
其它名称： 914-1018
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
16
www.energymicro.com
Device
The processor preserves transaction order relative to other transactions to
Device or Strongly-ordered memory.
Strongly-ordered
The processor preserves transaction order relative to all other transactions.
The different ordering requirements for Device and Strongly-ordered memory mean that the memory
system can buffer a write to Device memory, but must not buffer a write to Strongly-ordered memory.
The additional memory attributes include.
Execute Never (XN)
Means the processor prevents instruction accesses. Any attempt to fetch an
instruction from an XN region causes a memory management fault exception.
2.2.2 Memory system ordering of memory accesses
For most memory accesses caused by explicit memory access instructions, the memory system does not
guarantee that the order in which the accesses complete matches the program order of the instructions,
providing this does not affect the behavior of the instruction sequence. Normally, if correct program
execution depends on two memory accesses completing in program order, software must insert a
memory barrier instruction between the memory access instructions, see Section 2.2.4 (p. 17) .
However, the memory system does guarantee some ordering of accesses to Device and Strongly-
ordered memory. For two memory access instructions A1 and A2, if A1 occurs before A2 in program
order, the ordering of the memory accesses caused by two instructions is:
Norm al access
Device access, non-shareable
Device access, shareable
St rongly-ordered access
Norm al
access
Non-shareable
Shareable
St rongly-
ordered
access
Device access
A1
A2
-
<
-
<
-
<
-
<
Where:
-
Means that the memory system does not guarantee the ordering of the accesses.
<
Means that accesses are observed in program order, that is, A1 is always observed before A2.
2.2.3 Behavior of memory accesses
The behavior of accesses to each region in the memory map is:
Table 2.11. Memory access behavior
Address
range
Memory region
Memory
type
XN
Description
0x00000000
-
0x1FFFFFFF
Code
Normal
1
-
Executable region for program code. You can also put data here.
0x20000000
-
0x3FFFFFFF
SRAM
Normal
1
-
Executable region for data. You can also put code here.This region
includes bit band and bit band alias areas, see Table 2.12 (p. 18)
.
0x40000000
-
0x5FFFFFFF
Peripheral
Device
1
XN
1
This region includes bit band and bit band alias areas, see
Table 2.13 (p. 18) .
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相关代理商/技术参数
参数描述
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 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格: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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