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參數(shù)資料
| 型號： | AT91M42800A-33CJ |
| 廠商： | Atmel |
| 文件頁數(shù)： | 3/27頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ARM7 MCU 144 BGA |
| 產(chǎn)品培訓模塊： | MCU Product Line Introduction |
| 標準包裝： | 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： | 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-LFBGA |
| 包裝： | 托盤 |
| 配用： | AT91EB42-ND - KIT EVAL FOR ARM AT91M42800A |
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11
1779ES–ATARM–14-Apr-06
AT91M42800A
7.
Product Overview
7.1
Power Supply
The AT91M42800A has three kinds of power supply pins:
VDDCORE pins, which power the chip core
VDDIO pins, which power the I/O lines
VDDPLL pins, which power the oscillator and PLL cells
VDDCORE and VDDIO pins allow core power consumption to be reduced by supplying it with a
lower voltage than the I/O lines. The VDDCORE pins must never be powered at a voltage
greater than the supply voltage applied to the VDDIO.
The VDDPLL pin is used to supply the oscillator and both PLLs. The voltage applied on these
pins is typically 3.3V, and it must not be lower than VDDCORE.
Typical supported voltage combinations are shown in the following table:
7.2
Input/Output Considerations
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 AT91M42800A
microcontroller be held at valid logic levels to minimize the power consumption.
7.3
Operating Modes
The AT91M42800A has two pins dedicated to defining MODE0 and MODE1 operating modes.
These pins allow the user to enter the device in Boundary Scan mode. They also allow the user
to run the processor from the on-chip oscillator and from an external clock by bypassing the on-
chip oscillator. The last mode is reserved for test purposes. A chip reset must be performed
(NRST and NTRST) after MODE0 and/or MODE1 have been changed.
7.4
Clock Generator
The AT91M42800A microcontroller embeds a 32.768 kHz oscillator that generates the Slow
Clock (SLCK). This on-chip oscillator can be bypassed by setting the correct logical level on
MODE0 and MODE1 pins, as shown above. In this case, SLCK equals XIN.
Pins
Nominal Supply Voltages
VDDCORE
3.3V
3.0V or 3.3V
VDDIO
5.0V
3.0V or 3.3V
VDDPLL
3.3V
3.0V or 3.3V
MODE0
MODE1
Operating Mode
0
Normal operating mode by using the on-chip oscillator
0
1
Boundary Scan Mode
1
0
Normal operating mode by using an external clock on XIN
1
Reserved for test
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT91M42800A-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 安裝風格:SMD/SMT |
| AT91M43300 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers |
| AT91M43300-12CC-1.8 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers |
| AT91M43300-12CI-1.8 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers |
| AT91M43300-25CC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers |
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