参数资料
型号: PIC32MX575F256LT-80I/PT
厂商: Microchip Technology
文件页数: 62/64页
文件大小: 0K
描述: IC MCU 32BIT 256KB FLASH 100TQFP
标准包装: 1,200
系列: PIC® 32MX
核心处理器: MIPS32? M4K?
芯体尺寸: 32-位
速度: 80MHz
连通性: CAN,I²C,SPI,UART/USART,USB OTG
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 85
程序存储器容量: 256KB(256K x 8)
程序存储器类型: 闪存
RAM 容量: 64K x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 3.6 V
数据转换器: A/D 16x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-TQFP
包装: 带卷 (TR)
2007-2012 Microchip Technology Inc.
DS61145K-page 7
PIC32MX
4.3
Power Requirements
All devices in the PIC32MX family are dual voltage
supply designs: one supply for the core and peripherals
and another for the I/O pins. Some devices contain an
on-chip regulator to eliminate the need for two external
voltage supplies.
All of the PIC32MX devices power their core digital
logic at a nominal 1.8V. This may create an issue for
designs that are required to operate at a higher typical
voltage, such as 3.3V. To simplify system design, all
devices in the PIC32MX family incorporate an on-chip
regulator that allows the device to run its core logic from
VDD.
The regulator provides power to the core from the other
VDD pins. A low-ESR capacitor (e.g., a tantalum
capacitor) must be connected to the VCAP pin
(Figure 4-2). This helps to maintain the stability of the
regulator. The specifications for core voltage and
capacitance
are
listed
in
FIGURE 4-2:
CONNECTIONS FOR THE
ON-CHIP REGULATOR
VDD
ENVREG
VCAP
VSS
PIC32MX
3.3V(1)
1.8V(1)
VDD
ENVREG
VCAP
VSS
PIC32MX
CEFC
3.3V
Regulator Enabled(2)
Regulator Disabled(2)
(10
μF typical)
Note 1:
These are typical operating voltages. Refer
Timing Requirements” for the full operating
ranges of VDD and VCAP.
2:
Regulator Enabled and Regulator Disabled
mode are not available on all devices.
Please refer to the specific device data
sheet to determine availability.
(ENVREG tied to VDD)
(ENVREG tied to ground)
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