參數(shù)資料
型號(hào)： ATSAM3U1CB-CU
廠商： Atmel
文件頁(yè)數(shù)： 31/60頁(yè)
文件大?。?/td> 0K
描述： IC MCU 64KB CORTEX-M3 100-TFBGA
標(biāo)準(zhǔn)包裝： 260
系列： SAM3U
核心處理器： ARM? Cortex?-M3
芯體尺寸： 32-位
速度： 96MHz
連通性： EBI/EMI，I²C，MMC，SPI，SSC，UART/USART，USB
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，DMA，I²S，POR，PWM，WDT
輸入/輸出數(shù)： 57
程序存儲(chǔ)器容量： 64KB（64K x 8）
程序存儲(chǔ)器類(lèi)型： 閃存
RAM 容量： 20K x 8
電壓 - 電源 (Vcc/Vdd)： 1.62 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x10b，4x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 100-TFBGA
包裝： 托盤(pán)
37
6430FS–ATARM–10-Feb-12
SAM3U Series
10.1
System Controller and Peripheral Mapping
All the peripherals are in the bit band region and are mapped in the bit band alias region.
10.2
Power-on-Reset, Brownout and Supply Monitor
The SAM3U embeds three features to monitor, warn and/or reset the chip:
Power-on-Reset on VDDBU
Brownout Detector on VDDCORE
Supply Monitor on VDDUTMI
10.2.1
Power-on-Reset on VDDBU
The Power-on-Reset monitors VDDBU. It is always activated and monitors voltage at start up
but also during power down. If VDDBU goes below the threshold voltage, the entire chip is reset.
For more information, refer to the “Electrical Characteristics” section of the datasheet.
10.2.2
Brownout Detector on VDDCORE
The Brownout Detector monitors VDDCORE. It is active by default. It can be deactivated by soft-
ware through the Supply Controller (SUPC_MR). It is especially recommended to disable it
during low-power modes such as wait or sleep modes.
If VDDCORE goes below the threshold voltage, the reset of the core is asserted. For more infor-
mation, refer to the “Supply Controller” and “Electrical Characteristics” sections of the product
datasheet.
10.2.3
Supply Monitor on VDDUTMI
The Supply Monitor monitors VDDUTMI. It is not active by default. It can be activated by soft-
ware and is fully programmable with 16 steps for the threshold (between 1.9V to 3.4V). It is
controlled by the Supply Controller. A sample mode is possible. It allows to divide the supply
monitor power consumption by a factor of up to 2048. For more information, refer to the “Supply
Controller” and “Electrical Characteristics” sections of the product datasheet.
10.3
Reset Controller
The Reset Controller is capable to return to the software the source of the last reset, either a
general reset, a wake-up reset, a software reset, a user reset or a watchdog reset.
The Reset Controller controls the internal resets of the system and the NRST pin output. It is
capable to shape a reset signal for the external devices, simplifying to a minimum connection of
a push-button on the NRST pin to implement a manual reset.
10.4
Supply Controller
The Supply Controller controls the power supplies of each section of the processor and the
peripherals (via Voltage regulator control).
The Supply Controller has its own reset circuitry and is clocked by the 32 kHz Slow clock
generator.
The reset circuitry is based on a zero-power power-on reset cell. The zero-power power-on reset
allows the Supply Controller to start properly.
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ATSAM3U1EB-CU 功能描述:ARM微控制器 - MCU LFBGA, Grn, IT MRL B RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線(xiàn)寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)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
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