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參數資料
| 型號： | EFM32-TG110F32-SK |
| 廠商： | Energy Micro |
| 文件頁數： | 57/136頁 |
| 文件大小： | 0K |
| 描述： | IC MICRO KIT GECKO 24QFN |
| 標準包裝： | 1 |
| 系列： | Tiny Gecko |
| 套件類型： | 微控制器 |
| 值： | 2 件 - 閃存 - 32KB |
| 包裝： | 紙板盒 |
| 安裝類型： | 表面貼裝 |
| 包括封裝： | 24-QFN |
| 工具箱內容： | (2) 914-1033-2-ND - MCU 32BIT 32KB FLASH 24-QFN |
| 其它名稱： | 914-1022 |
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...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
27
www.energymicro.com
exception enters the execute stage of the processor. On return from the exception
handler of the late-arriving exception, the normal tail-chaining rules apply.
2.3.7.1 Exception entry
Exception entry occurs when there is a pending exception with sufficient priority and either:
the processor is in Thread mode
the new exception is of higher priority than the exception being handled, in which case the new
exception preempts the original exception.
When one exception preempts another, the exceptions are nested.
Sufficient priority means the exception has more priority than any limits set by the mask registers, see
Section 2.1.3.6 (p. 11) . An exception with less priority than this is pending but is not handled by
the processor.
When the processor takes an exception, unless the exception is a tail-chained or a late-arriving
exception, the processor pushes information onto the current stack. This operation is referred as stacking
and the structure of eight data words is referred as stack frame. The stack frame contains the following
information:
R0-R3, R12
Return address
PSR
LR.
Immediately after stacking, the stack pointer indicates the lowest address in the stack frame. Unless
stack alignment is disabled, the stack frame is aligned to a double-word address. If the STKALIGN bit of
the Configuration Control Register (CCR) is set to 1, stack align adjustment is performed during stacking.
The stack frame includes the return address. This is the address of the next instruction in the interrupted
program. This value is restored to the PC at exception return so that the interrupted program resumes.
In parallel to the stacking operation, the processor performs a vector fetch that reads the exception
handler start address from the vector table. When stacking is complete, the processor starts executing
the exception handler. At the same time, the processor writes an EXC_RETURN value to the LR.
This indicates which stack pointer corresponds to the stack frame and what operation mode the was
processor was in before the entry occurred.
If no higher priority exception occurs during exception entry, the processor starts executing the exception
handler and automatically changes the status of the corresponding pending interrupt to active.
If another higher priority exception occurs during exception entry, the processor starts executing the
exception handler for this exception and does not change the pending status of the earlier exception.
This is the late arrival case.
2.3.7.2 Exception return
Exception return occurs when the processor is in Handler mode and executes one of the following
instructions to load the EXC_RETURN value into the PC:
a POP instruction that includes the PC
a BX instruction with any register.
an LDR or LDM instruction with the PC as the destination.
EXC_RETURN is the value loaded into the LR on exception entry. The exception mechanism relies on
this value to detect when the processor has completed an exception handler. The lowest four bits of
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相關代理商/技術參數 |
參數描述 |
|---|---|
| EFM32TG110F32-T | 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 24QFN |
| EFM32TG110F4 | 功能描述:ARM微控制器 - MCU 4KB Flash 1KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數據總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數據 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 安裝風格:SMD/SMT |
| EFM32TG110F4-QFN24 | 制造商:Energy Micro AS 功能描述:TINY GECKO MCU - Tape and Reel 制造商:Energy Micro 功能描述:energy micro EFM32TG110F4-QFN24 Microcontrollers (MCU) 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 4KB FLASH 24QFN |
| EFM32TG110F4-QFN24T | 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays |
| EFM32TG110F4-QFN24-T | 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 4KB FLASH 24QFN |
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