参数资料
型号: AT32UC3C2512C-Z2ZT
厂商: Atmel
文件页数: 27/109页
文件大小: 0K
描述: IC MCU 32BIT 512KB FLASH 64QFN
标准包装: 1,300
系列: AVR®32 UC3 C
核心处理器: AVR
芯体尺寸: 32-位
速度: 50MHz
连通性: CAN,以太网,I²C,IrDA,LIN,SPI,UART/USART,USB
外围设备: 欠压检测/复位,DMA,I²S,POR,PWM,WDT
输入/输出数: 45
程序存储器容量: 512KB(512K x 8)
程序存储器类型: 闪存
RAM 容量: 64K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 11x12b,D/A 2x12b
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 64-VFQFN 裸露焊盘
包装: 托盘
24
9166DS–AVR-01/12
AT32UC3C
3.4
I/O Line Considerations
3.4.1
JTAG pins
The JTAG is enabled if TCK is low while the RESET_N pin is released. The TCK, TMS, and TDI
pins have pull-up resistors when JTAG is enabled. The TCK pin always have pull-up enabled
during reset. The TDO pin is an output, driven at VDDIO1, and has no pull-up resistor. The
JTAG pins can be used as GPIO pins and muxed with peripherals when the JTAG is disabled.
Please refer to Section 3.2.4 for the JTAG port connections.
3.4.2
RESET_N pin
The RESET_N pin integrates a pull-up resistor to VDDIO1. As the product integrates a power-on
reset cell, the RESET_N pin can be left unconnected in case no reset from the system needs to
be applied to the product.
The RESET_N pin is also used for the aWire debug protocol. When the pin is used for debug-
ging, it must not be driven by external circuitry.
3.4.3
TWI pins
When these pins are used for TWI, the pins are open-drain outputs with slew-rate limitation and
inputs with inputs with spike-filtering. When used as GPIO-pins or used for other peripherals, the
pins have the same characteristics as GPIO pins.
3.4.4
GPIO pins
All I/O lines integrate programmable pull-up and pull-down resistors. Most I/O lines integrate
drive strength control, see Table 3-1
. Programming of this pull-up and pull-down resistor or this
drive strength is performed independently for each I/O line through the GPIO Controllers.
After reset, I/O lines default as inputs with pull-up/pull-down resistors disabled. After reset, out-
put drive strength is configured to the lowest value to reduce global EMI of the device.
When the I/O line is configured as analog function (ADC I/O, AC inputs, DAC I/O), the pull-up
and pull-down resistors are automatically disabled.
DP
USB Device Port Data +
Analog
VBUS
USB VBUS Monitor and OTG Negociation
Analog
Input
ID
ID Pin of the USB Bus
Input
VBOF
USB VBUS On/off: bus power control port
output
Table 3-7.
Signal Description List
Signal Name
Function
Type
Active
Level
Comments
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