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參數資料
型號: EFM32-TG840F32-SK
廠商: Energy Micro
文件頁數: 48/136頁
文件大?。?/td> 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
19
www.energymicro.com
bit_word_offset = (byte_offset x 32) + (bit_number x 4)
bit_word_addr = bit_band_base + bit_word_offset
where:
Bit_word_offset is the position of the target bit in the bit-band memory region.
Bit_word_addr is the address of the word in the alias memory region that maps to the targeted bit.
Bit_band_base is the starting address of the alias region.
Byte_offset is the number of the byte in the bit-band region that contains the targeted bit.
Bit_number is the bit position, 0-7, of the targeted bit.
Figure 2.1 (p. 19) shows examples of bit-band mapping between the SRAM bit-band alias region
and the SRAM bit-band region:
The alias word at 0x23FFFFE0 maps to bit[0] of the bit-band byte at 0x200FFFFF: 0x23FFFFE0 =
0x22000000
+ (0xFFFFF*32) + (0*4).
The alias word at 0x23FFFFFC maps to bit[7] of the bit-band byte at 0x200FFFFF: 0x23FFFFFC =
0x22000000
+ (0xFFFFF*32) + (7*4).
The alias word at 0x22000000 maps to bit[0] of the bit-band byte at 0x20000000: 0x22000000 =
0x22000000
+ (0*32) + (0 *4).
The alias word at 0x2200001C maps to bit[7] of the bit-band byte at 0x20000000: 0x2200001C =
0x22000000
+ (0*32) + (7*4).
Figure 2.1. Bit-band mapping
0x23FFFFE4
0x22000004
0x23FFFFE0
0x23FFFFE8
0x23FFFFEC
0x23FFFFF0
0x23FFFFF4
0x23FFFFF8
0x23FFFFFC
0x22000000
0x22000014
0x22000018
0x2200001C
0x22000008
0x22000010
0x2200000C
32MB alias region
0
7
0
7
0x20000000
0x20000001
0x20000002
0x20000003
6
5
4
3
2
1
0
7
6
5
4
3
2
1
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0x200FFFFC
0x200FFFFD
0x200FFFFE
0x200FFFFF
1MB SRAM bit -band region
2.2.5.1 Directly accessing an alias region
Writing to a word in the alias region updates a single bit in the bit-band region.
Bit[0] of the value written to a word in the alias region determines the value written to the targeted bit in
the bit-band region. Writing a value with bit[0] set to 1 writes a 1 to the bit-band bit, and writing a value
with bit[0] set to 0 writes a 0 to the bit-band bit.
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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