参数资料
型号: EFM32G842F128
厂商: Energy Micro
文件页数: 2/136页
文件大小: 0K
描述: IC MCU 32BIT 128KB FLASH 64LQFP
标准包装: 1
系列: Gecko
核心处理器: ARM? Cortex?-M3
芯体尺寸: 32-位
速度: 32MHz
连通性: I²C,IrDA,智能卡,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,LCD,POR,PWM,WDT
输入/输出数: 53
程序存储器容量: 128KB(128K x 8)
程序存储器类型: 闪存
RAM 容量: 16K 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-TQFP
包装: 标准包装
其它名称: 914-1028-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
10
www.energymicro.com
2.1.3.5.2 Interrupt Program Status Register
The IPSR contains the exception type number of the current Interrupt Service Routine (ISR). See the
register summary in Table 2.2 (p. 7) for its attributes. The bit assignments are:
Table 2.5. IPSR bit assignments
Bits
Name
Function
[31:9]
-
Reserved
[8:0]
ISR_NUMBER
This is the number of the current exception:
0 = Thread mode
1 = Reserved
2 = NMI
3 = Hard fault
4 = Memory management fault
5 = Bus fault
6 = Usage fault7-10 = Reserved11 = SVCall
12 = Reserved for Debug
13 = Reserved
14 = PendSV
15 = SysTick
16 = IRQ0.
.
N = IRQ(N-16). See Table 1.1 (p. 5) for device specific
interrupt number.
see Section 2.3.2 (p. 22) for more information.
2.1.3.5.3 Execution Program Status Register
The EPSR contains the Thumb state bit, and the execution state bits for either the:
If-Then (IT) instruction
Interruptible-Continuable Instruction (ICI) field for an interrupted load multiple or store multiple
instruction.
See the register summary in Table 2.2 (p. 7) for the EPSR attributes. The bit assignments are:
Table 2.6. EPSR bit assignments
Bits
Name
Function
[31:27]
-
Reserved.
[26:25], [15:10]
ICI
Interruptible-continuable instruction bits, see Section 2.1.3.5.4 (p. 11) .
[26:25], [15:10]
IT
Indicates the execution state bits of the IT instruction, see Section 3.9.3 (p. 76) .
[24]
T
Always set to 1.
[23:16]
-
Reserved.
[9:0]
-
Reserved.
Attempts to read the EPSR directly through application software using the MSR instruction always return
zero. Attempts to write the EPSR using the MSR instruction in application software are ignored. Fault
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