参数资料
型号: EFM32TG210F32
厂商: Energy Micro
文件页数: 27/136页
文件大小: 0K
描述: MCU 32BIT 32KB FLASH 32-QFN
特色产品: EFM32 Tiny Gecko
标准包装: 1
系列: Tiny Gecko
核心处理器: ARM? Cortex?-M3
芯体尺寸: 32-位
速度: 32MHz
连通性: EBI/EMI,I²C,IrDA,智能卡,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 24
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 4K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.8 V
数据转换器: A/D 4x12b,D/A 1x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 32-VQFN 裸露焊盘
包装: 标准包装
其它名称: 914-1034-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
122
www.energymicro.com
; R3 = size, attributes in one
LDR R0, =MPU_RNR
; 0xE000ED98, MPU region number register
STR R1, [R0, #0x0]
; Region Number
STR R2, [R0, #0x4]
; Region Base Address
STR R3, [R0, #0x8]
; Region Attribute, Size and Enable
Use an STM instruction to optimize this:
; R1 = region number
; R2 = address
; R3 = size, attributes in one
LDR R0, =MPU_RNR
; 0xE000ED98, MPU region number register
STM R0, {R1-R3}
; Region Number, address, attribute, size and enable
You can do this in two words for pre-packed information. This means that the RBAR contains the required
region number and had the VALID bit set to 1, see Section 4.5.4 (p. 117) . Use this when the data is
statically packed, for example in a boot loader:
; R1 = address and region number in one
; R2 = size and attributes in one
LDR R0, =MPU_RBAR
; 0xE000ED9C, MPU Region Base register
STR R1, [R0, #0x0]
; Region base address and
; region number combined with VALID (bit 4) set to 1
STR R2, [R0, #0x4]
; Region Attribute, Size and Enable
Use an STM instruction to optimize this:
; R1 = address and region number in one
; R2 = size and attributes in one
LDR R0,=MPU_RBAR
; 0xE000ED9C, MPU Region Base register
STM R0, {R1-R2}
; Region base address, region number and VALID bit,
; and Region Attribute, Size and Enable
4.5.8.3 Subregions
Regions of 256 bytes or more are divided into eight equal-sized subregions. Set the corresponding bit
in the SRD field of the RASR to disable a subregion, see Section 4.5.5 (p. 117) . The least significant
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