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參數資料
型號: EFM32-TG840F32-SK
廠商: Energy Micro
文件頁數: 100/136頁
文件大小: 0K
描述: IC MICRO KIT GECKO 64QFN
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: 64-QFN
工具箱內容: (2) 914-1036-2-ND - MCU 32BIT 32KB FLASH 64-QFN
其它名稱: 914-1020
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
66
www.energymicro.com
3.5.9.2 Operation
These instructions test the value in a register against Operand2. They update the condition flags based
on the result, but do not write the result to a register.
The TST instruction performs a bitwise AND operation on the value in Rn and the value of Operand2.
This is the same as the ANDS instruction, except that it discards the result.
To test whether a bit of Rn is 0 or 1, use the TST instruction with an Operand2 constant that has that
bit set to 1 and all other bits cleared to 0.
The TEQ instruction performs a bitwise Exclusive OR operation on the value in Rn and the value of
Operand2
. This is the same as the EORS instruction, except that it discards the result.
Use the TEQ instruction to test if two values are equal without affecting the V or C flags.
TEQ
is also useful for testing the sign of a value. After the comparison, the N flag is the logical Exclusive
OR of the sign bits of the two operands.
3.5.9.3 Restrictions
Do not use SP and do not use PC.
3.5.9.4 Condition flags
These instructions:
update the N and Z flags according to the result
can update the C flag during the calculation of Operand2, see Section 3.3.3 (p. 38)
do not affect the V flag.
3.5.9.5 Examples
TST
R0, #0x3F8
; Perform bitwise AND of R0 value to 0x3F8,
; APSR is updated but result is discarded
TEQEQ
R10, R9
; Conditionally test if value in R10 is equal to
; value in R9, APSR is updated but result is discarded
3.6 Multiply and divide instructions
Table 3.9 (p. 66) shows the multiply and divide instructions:
Table 3.9. Multiply and divide instructions
Mnemonic
Brief description
See
MLA
Multiply with Accumulate, 32-bit result
MLS
Multiply and Subtract, 32-bit result
MUL
Multiply, 32-bit result
SDIV
Signed Divide
SMLAL
Signed Multiply with Accumulate
(32x32+64), 64-bit result
SMULL
Signed Multiply (32x32), 64-bit result
UDIV
Unsigned Divide
UMLAL
Unsigned Multiply with Accumulate
(32x32+64), 64-bit result
相關PDF資料
PDF描述
EFM32-TG822F32-SK IC MICRO KIT GECKO 48LQFP
EFM32-TG222F32-SK IC MICRO KIT GECKO 48LQFP
EFM32-TG230F32-SK IC MICRO KIT GECKO 64QFN
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1267 X 6" TAPE ALUMINUM FOIL 6" X 1FT
相關代理商/技術參數
參數描述
EFM32TG840F32-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 64QFN
EFM32TG840F8 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
EFM32TG840F8-QFN64 制造商:Energy Micro AS 功能描述:8 FLASH, USART + UART 2, QFN64 - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 8KB FLASH 64QFN
EFM32TG840F8-QFN64T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays
EFM32TG840F8-QFN64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 8KB FLASH 64QFN
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