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參數(shù)資料
| 型號： | AT91M55800A-33CJ |
| 廠商： | Atmel |
| 文件頁數(shù)： | 8/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ARM MCU 16BIT 176BGA |
| 產(chǎn)品培訓(xùn)模塊： | MCU Product Line Introduction |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 系列： | AT91 |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 33MHz |
| 連通性： | EBI/EMI，SPI，UART/USART |
| 外圍設(shè)備： | POR，WDT |
| 輸入/輸出數(shù)： | 58 |
| 程序存儲器類型： | ROMless |
| RAM 容量： | 8K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x10b; D/A 2x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 176-LFBGA |
| 包裝： | 托盤 |
| 配用： | AT91EB55-ND - KIT EVAL FOR ARM AT91M55800A |
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1745FS–ATARM–18-Apr-06
AT91M55800A Summary
Internal peripherals in the four highest megabytes
In any of these address spaces, the ARM7TDMI operates in Little-Endian mode only.
7.6.1
Internal Memories
The AT91M55800A microcontroller integrates an 8-Kbyte primary SRAM bank. This memory
bank is mapped at address 0x0 (after the remap command), allowing ARM7TDMI exception
vectors between 0x0 and 0x20 to be modified by the software. The rest of the bank can be
used for stack allocation (to speed up context saving and restoring), or as data and program
storage for critical algorithms. All internal memory is 32 bits wide and single-clock cycle acces-
sible. Byte (8-bit), half-word (16-bit) or word (32-bit) accesses are supported and are executed
within one cycle. Fetching Thumb or ARM instructions is supported and internal memory can
store twice as many Thumb instructions as ARM ones.
7.6.2
Boot Mode Select
The ARM reset vector is at address 0x0. After the NRST line is released, the ARM7TDMI exe-
cutes the instruction stored at this address. This means that this address must be mapped in
nonvolatile memory after the reset.
The input level on the BMS pin during the last 10 clock cycles before the rising edge of the
NRST selects the type of boot memory (see Table 5).
The BMS pin is multiplexed with the I/O line PB18 that can be programmed after reset like any
standard PIO line.
7.6.3
Remap Command
The ARM vectors (Reset, Abort, Data Abort, Prefetch Abort, Undefined Instruction, Interrupt,
Fast Interrupt) are mapped from address 0x0 to address 0x20. In order to allow these vectors
to be redefined dynamically by the software, the AT91M55800A microcontroller uses a remap
command that enables switching between the boot memory and the internal RAM bank
addresses. The remap command is accessible through the EBI User Interface, by writing one
in RCB of EBI_RCR (Remap Control Register). Performing a remap command is mandatory if
access to the other external devices (connected to chip selects 1 to 7) is required. The remap
operation can only be changed back by an internal reset or an NRST assertion.
7.6.4
Abort Control
The abort signal providing a Data Abort or a Prefetch Abort exception to the ARM7TDMI is
asserted when accessing an undefined address in the EBI address space.
No abort is generated when reading the internal memory or by accessing the internal peripher-
als, whether the address is defined or not.
7.6.5
External Bus Interface
The External Bus Interface handles the accesses between addresses 0x0040 0000 and
0xFFC0 0000. It generates the signals that control access to the external devices, and can
Table 7-2.
Boot Mode Select
BMS
Boot Mode
1
External 8-bit memory on NCS0
0
External 16-bit memory on NCS0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| AT91M55800A-33CJ SL383 | 功能描述:IC ARM MCU 16BIT 176BGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 標(biāo)準(zhǔn)包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測/復(fù)位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| AT91M55800A-33CJ-999 | 功能描述:ARM微控制器 - MCU BGA Ind. Temp RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT |
| AT91M55800A-33CJ-T | 功能描述:IC MCU 32BIT ROMLESS 176LFBGA 制造商:microchip technology 系列:AT91 包裝:帶卷（TR） 零件狀態(tài):停產(chǎn) 核心處理器:ARM7? 核心尺寸:16/32-位 速度:33MHz 連接性:EBI/EMI，SPI，UART/USART 外設(shè):POR，WDT I/O 數(shù):58 程序存儲容量:- 程序存儲器類型:ROMless EEPROM 容量:- RAM 容量:8K x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b；D/A 2x10b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:176-LFBGA 供應(yīng)商器件封裝:176-LFBGA（11.2x11.2） 基本零件編號:AT91M55800 標(biāo)準(zhǔn)包裝:1,000 |
| AT91M63200 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
| AT91M63200_99 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
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