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參數(shù)資料
| 型號： | AT91M42800A-33AI SL383 |
| 廠商： | Atmel |
| 文件頁數(shù)： | 27/27頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ARM MCU 16BIT 144TQFP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 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： | WDT |
| 輸入/輸出數(shù)： | 54 |
| 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 |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 144-LQFP |
| 包裝： | 帶卷 (TR) |
| 配用： | AT91EB42-ND - KIT EVAL FOR ARM AT91M42800A |
| 其它名稱： | AT91M42800A33AISL |
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9
1779ES–ATARM–14-Apr-06
AT91M42800A
5.
Architectural Overview
The AT91M42800A microcontroller integrates an ARM7TDMI with its embedded ICE interface,
memories and peripherals. Its architecture consists of two main buses, the Advanced System
Bus (ASB) and the Advanced Peripheral Bus (APB). Designed for maximum performance and
controlled by the memory controller, the ASB interfaces the ARM7TDMI processor with the on-
chip 32-bit memories, the External Bus Interface (EBI) and the AMBA Bridge. The AMBA
Bridge drives the APB, which is designed for accesses to on-chip peripherals and optimized for
low power consumption.
The AT91M42800A microcontroller implements the ICE port of the ARM7TDMI processor on
dedicated pins, offering a complete, low-cost and easy-to-use debug solution for target
debugging.
5.1
Memories
The AT91M42800A microcontroller embeds up to 8K bytes of internal SRAM. The internal mem-
ory is directly connected to the 32-bit data bus and is single-cycle accessible. This provides
maximum performance of 30 MIPS at 33 MHz by using the ARM instruction set of the processor.
The on-chip memory significantly reduces the system power consumption and improves its per-
formance over external memory solutions.
The AT91M42800A microcontroller features an External Bus Interface (EBI), which enables con-
nection of external memories and application-specific peripherals. The EBI supports 8- or 16-bit
devices and can use two 8-bit devices to emulate a single 16-bit device. The EBI implements the
early read protocol, enabling faster single clock cycle accesses two times faster than standard
memory interfaces.
5.2
Peripherals
The AT91M42800A microcontroller integrates several peripherals, which are classified as sys-
tem or user peripherals. All on-chip peripherals are 32-bit accessible by the AMBA Bridge, and
can be programmed with a minimum number of instructions. The peripheral register set is com-
posed of control, mode, data, status and enable/disable/status registers.
An on-chip Peripheral Data Controller (PDC) transfers data between the on-chip USARTs/SPIs
and the on- and off-chip memories without processor intervention. Most importantly, the PDC
removes the processor interrupt handling overhead and significantly reduces the number of
clock cycles required for a data transfer. It can transfer up to 64K continuous bytes without
reprogramming the start address. As a result, the performance of the microcontroller is
increased and the power consumption reduced.
5.2.1
System Peripherals
The External Bus Interface (EBI) controls the external memory and peripheral devices via an 8-
or 16-bit data bus and is programmed through the APB. Each chip select line has its own pro-
gramming register.
The Power Management Controller (PMC) optimizes power consumption of the product by con-
trolling the clocking elements such as the oscillator and the two PLLs, system and user
peripheral clocks.
The Advanced Interrupt Controller (AIC) controls the internal sources from the internal peripher-
als and the five external interrupt lines (including the FIQ) to provide an interrupt and/or fast
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT91M42800A-33AI-T | 功能描述:IC MCU 32BIT ROMLESS 144LQFP 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):WDT I/O 數(shù):54 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:- 振蕩器類型:外部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:144-LQFP 供應(yīng)商器件封裝:144-LQFP（20x20） 基本零件編號:AT91M42800 標(biāo)準(zhǔn)包裝:1,000 |
| AT91M42800A-33AU | 功能描述:ARM微控制器 - MCU 8kB SRAM 33MHz - PWM 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 |
| AT91M42800A-33AU-999 | 功能描述:ARM微控制器 - MCU Ind. Temp Green 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 |
| AT91M42800A-33CI | 功能描述:IC ARM7 MCU 144 BGA 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:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設(shè)備:POR，WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件 |
| AT91M42800A-33CI SL383 | 功能描述:IC ARM MCU 16BIT 144BGA 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) |
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