参数资料
型号: PIC32MX575F256LT-80I/PF
厂商: Microchip Technology
文件页数: 63/64页
文件大小: 0K
描述: MCU 32BIT 256K FLASH 100TQFP
标准包装: 1,000
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)
PIC32MX
DS61145K-page 8
2007-2012 Microchip Technology Inc.
5.0
EJTAG vs. ICSP
Programming is accomplished through the EJTAG
module in the CPU core. EJTAG is connected to either
the full set of JTAG pins, or a reduced 2-wire to 4-wire
EJTAG interface for ICSP mode. In both modes, pro-
gramming of the PIC32MX Flash memory is accom-
plished
through
the
ETAP
controller.
The
TAP
Controller uses the TMS pin to determine if Instruction
or Data registers should be accessed in the shift path
between TDI and TDO (see Figure 5-1).
The basic concept of EJTAG that is used for
programming is the use of a special memory area
called DMSEG (0xFF200000 to 0xFF2FFFFF), which
is only available when the processor is running in
Debug mode. All instructions are serially shifted into an
internal buffer, and then loaded into the Instruction
register and executed by the CPU. Instructions are fed
through the ETAP state machine in 32-bit groups.
FIGURE 5-1:
TAP CONTROLLER
TMS
TCK
TDO
TDI
Tap Controller
Instruction, Data and Control Registers
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