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參數(shù)資料
| 型號： | AT91M40800-33AI |
| 廠商： | Atmel |
| 文件頁數(shù)： | 16/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ARM7 MCU 100 TQFP |
| 標準包裝： | 1 |
| 系列： | AT91 |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 33MHz |
| 連通性： | EBI/EMI，UART/USART |
| 外圍設備： | POR，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲器類型： | ROMless |
| RAM 容量： | 8K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 100-LQFP |
| 包裝： | 托盤 |
7
1348FS–ATARM–13-Apr-06
AT91M40800
7.
Product Overview
7.1
Power Supply
The AT91M40800 microcontroller has a unique type of power supply pin – VDD. The VDD pin
supplies the I/O pads and the device core. The supported voltage range on V
DD is 1.8V to 3.6V.
7.2
Input/Output Considerations
The AT91M40800 microcontroller I/O pads are 5V-tolerant, enabling them to interface with
external 5V devices without any additional components. Thus, the devices accept 5V (3V) on the
inputs even if powered at 3V (2V). For further information, refer to the “AT91M40800 Electrical
Characteristics” datasheet.
After the reset, the peripheral I/Os are initialized as inputs to provide the user with maximum
flexibility. It is recommended that in any application phase, the inputs to the AT91M40800 micro-
controller be held at valid logic levels to minimize the power consumption.
7.3
Master Clock
The AT91M40800 microcontroller has a fully static design and works on the Master Clock
(MCK), provided on the MCKI pin from an external source.
The Master Clock is also provided as an output of the device on the pin MCKO, which is multi-
plexed with a general-purpose I/O line. While NRST is active, MCKO remains low. After the
reset, the MCKO is valid and outputs an image of the MCK signal. The PIO controller must be
programmed to use this pin as standard I/O line.
7.4
Reset
Reset restores the default states of the user interface registers (defined in the user interface of
each peripheral), and forces the ARM7TDMI to perform the next instruction fetch from address
zero. Except for the program counter the ARM7TDMI registers do not have defined reset states.
7.4.1
NRST Pin
NRST is active low-level input. It is asserted asynchronously, but exit from reset is synchronized
internally to the MCK. The signal presented on MCKI must be active within the specification for a
minimum of 10 clock cycles up to the rising edge of NRST, to ensure correct operation.
The first processor fetch occurs 80 clock cycles after the rising edge of NRST.
7.4.2
Watchdog Reset
The watchdog can be programmed to generate an internal reset. In this case, the reset has the
same effect as the NRST pin assertion, but the pins BMS and NTRI are not sampled. Boot Mode
and Tri-state Mode are not updated. If the NRST pin is asserted and the watchdog triggers the
internal reset, the NRST pin has priority.
7.5
Emulation Functions
7.5.1
Tri-state Mode
The AT91M40800 microcontroller provides a Tri-state mode, which is used for debug purposes.
This enables the connection of an emulator probe to an application board without having to des-
older the device from the target board. In Tri-state mode, all the output pin drivers of the
AT91M40800 microcontroller is disabled.
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| AT91M40800-33AI SL383 | 功能描述:IC ARM MCU 16BIT 100TQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 標準包裝: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 外圍設備:欠壓檢測/復位，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) |
| AT91M40800-33AI-T | 功能描述:IC MCU 32BIT ROMLESS 100LQFP 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，UART/USART 外設:POR，WDT I/O 數(shù):32 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）:1.8 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:100-LQFP 供應商器件封裝:100-LQFP（14x14） 基本零件編號:AT91M40800 標準包裝:1,000 |
| AT91M40800-33AU | 功能描述:ARM微控制器 - MCU 8K SRAM Ext Bus Interface 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 安裝風格:SMD/SMT |
| AT91M40800-33AU-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 安裝風格:SMD/SMT |
| AT91M40807 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
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