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參數(shù)資料
| 型號(hào)： | AT43USB351M-AC |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Full-speed/Low-speed USB Microcontroller with ADC and PWM |
| 中文描述： | 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48 |
| 文件頁數(shù)： | 10/101頁 |
| 文件大?。?/td> | 624K |
| 代理商： | AT43USB351M-AC |
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10
AT43USB351M
3302E–USB–7/04
SRAM Data
Memory
Table 4 summarizes how the AT43USB351M SRAM Memory is organized. The lower 1120
Data Memory locations address the Register file, the I/O Memory and the internal data SRAM.
The first 96 locations address the Register File + I/O Memory, and the next 1024 locations
address the internal data SRAM. The five different addressing modes for the data memory
cover: Direct, Indirect with Displacement, Indirect, Indirect with Pre-decrement and Indirect
with Post-increment. In the register file, registers R26 to R31 feature the indirect addressing
pointer registers. Direct addressing reaches the entire data space.
The Indirect with Displacement mode features 63 address locations that reach from the base
address given by the Y- or Z-register.
When using register indirect addressing modes with automatic pre-decrement and post-incre-
ment, the address registers X, Y, and Z are decremented and incremented.
The 32 general-purpose working registers, 64 I/O registers and the 1024 bytes of internal data
SRAM in the AT43USB351M are all accessible through these addressing modes.
To manage the USB hardware, a special set of registers is assigned. These registers are
mapped to SRAM space between addresses $1F00 and 1FFF. Table 4 and Table 5 give an
overview of these registers.
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相關(guān)代理商/技術(shù)參數(shù) |
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| AT43USB353M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
| AT43USB353M_03 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost USB Microcontroller with Hub, ADC and PWM |
| AT43USB353M_04 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| AT43USB353M-AC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| AT43USB355 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
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