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參數資料
型號： EFM32-TG222F32-SK
廠商： Energy Micro
文件頁數： 133/136頁
文件大小： 0K
描述： IC MICRO KIT GECKO 48LQFP
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： 48-LQFP
其它名稱： 914-1021
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
96
www.energymicro.com
Bits
Name
Function
[2]
DISFOLD
When set to 1, disables IT folding. see Section 4.3.2.1 (p. 96) for more information.
[1]
DISDEFWBUF
When set to 1, disables write buffer use during default memory map accesses. This causes
all bus faults to be precise bus faults but decreases performance because any store to
memory must complete before the processor can execute the next instruction.
Note
This bit only affects write buffers implemented in the Cortex-M3 processor.
[0]
DISMCYCINT
When set to 1, disables interruption of load multiple and store multiple instructions. This
increases the interrupt latency of the processor because any LDM or STM must complete
before the processor can stack the current state and enter the interrupt handler.
4.3.2.1 About IT folding
In some situations, the processor can start executing the first instruction in an IT block while it is still
executing the IT instruction. This behavior is called IT folding, and improves performance, However, IT
folding can cause jitter in looping. If a task must avoid jitter, set the DISFOLD bit to 1 before executing
the task, to disable IT folding.
4.3.3 CPUID Base Register
The CPUID register contains the processor part number, version, and implementation information. See
the register summary in Table 4.12 (p. 94) for its attributes. The bit assignments are:
31
16 15
4 3
0
Im plem ent er
Revision
Part No
24 23
20 19
Variant
Const ant
Table 4.14. CPUID register bit assignments
Bits
Name
Function
[31:24]
Implementer
Implementer code:
0x41
= ARM
[23:20]
Variant
Variant number, the r value in the rnpn product revision identifier:
0x2
= r2pX
[19:16]
Constant
Reads as 0xF
[15:4]
PartNo
Part number of the processor:
0xC23
= Cortex-M3
[3:0]
Revision
Revision number, the p value in the rnpn product revision identifier:
0x0
= rXp0
0x1
= rXp1
4.3.4 Interrupt Control and State Register
The ICSR:
provides:
a set-pending bit for the Non-Maskable Interrupt (NMI) exception
set-pending and clear-pending bits for the PendSV and SysTick exceptions
indicates:
the exception number of the exception being processed
whether there are preempted active exceptions
the exception number of the highest priority pending exception
whether any interrupts are pending.
相關PDF資料
PDF描述
EFM32-TG230F32-SK IC MICRO KIT GECKO 64QFN
EFM32-TG210F32-SK IC MICRO KIT GECKO 32QFN
1267 X 6" TAPE ALUMINUM FOIL 6" X 1FT
7810 0.25MM ECAP COND PAD .25MM 7.7" X 10"
7810 0.20MM ECAP COND PAD .20MM 7.7" X 10"
相關代理商/技術參數
參數描述
EFM32TG222F32-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 48TQFP
EFM32TG222F8 功能描述:ARM微控制器 - MCU 8KB Flash 2KB 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
EFM32TG222F8-QFP48 制造商:Energy Micro AS 功能描述:TINY GECKO MCU - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 8KB FLASH 48TQFP
EFM32TG222F8-QFP48T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays
EFM32TG222F8-QFP48-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 8KB FLASH 48TQFP
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