参数资料
型号: EFM32TG230F32
厂商: Energy Micro
文件页数: 68/136页
文件大小: 0K
描述: MCU 32BIT 32KB FLASH 64-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: 56
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 8x12b,D/A 2x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 64-VFQFN 裸露焊盘
包装: 标准包装
其它名称: 914-1035-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
37
www.energymicro.com
Mnemonic
Operands
Brief description
Flags
Page
USAT
Rd, #n, Rm {,shift
#s}
Unsigned Saturate
Q
UXTB
{Rd,} Rm {,ROR #n}
Zero extend a byte
-
UXTH
{Rd,} Rm {,ROR #n}
Zero extend a halfword
-
WFE
-
Wait For Event
-
WFI
-
Wait For Interrupt
-
3.2 Intrinsic functions
ANSI cannot directly access some Cortex-M3 instructions. This section describes intrinsic functions that
can generate these instructions, provided by the CMIS and that might be provided by a C compiler. If
a C compiler does not support an appropriate intrinsic function, you might have to use inline assembler
to access some instructions.
The CMSIS provides the following intrinsic functions to generate instructions that ANSI cannot directly
access:
Table 3.2. CMSIS intrinsic functions to generate some Cortex-M3 instructions
Instruction
CMSIS intrinsic function
CPSIE I
void __enable_irq(void)
CPSID I
void __disable_irq(void)
CPSIE F
void __enable_fault_irq(void)
CPSID F
void
__disable_fault_irq(void)
ISB
void __ISB(void)
DSB
void __DSB(void)
DMB
void __DMB(void)
REV
uint32_t __REV(uint32_t int
value)
REV16
uint32_t __REV16(uint32_t int
value)
REVSH
uint32_t __REVSH(uint32_t int
value)
RBIT
uint32_t __RBIT(uint32_t int
value)
SEV
void __SEV(void)
WFE
void __WFE(void)
WFI
void __WFI(void)
The CMSIS also provides a number of functions for accessing the special registers using MRS and MSR
instructions:
Table 3.3. CMSIS intrinsic functions to access the special registers
Special register
Access
CMSIS function
PRIMASK
Read
uint32_t __get_PRIMASK (void)
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