参数资料
型号: AT32UC3L032-D3HT
厂商: Atmel
文件页数: 151/174页
文件大小: 0K
描述: MCU AVR32 32K FLASH 48TTLGA
产品培训模块: AVR® UC3 Introduction
标准包装: 2,450
系列: AVR®32 UC3 L
核心处理器: AVR
芯体尺寸: 32-位
速度: 50MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 16K x 8
电压 - 电源 (Vcc/Vdd): 1.62 V ~ 3.6 V
数据转换器: A/D 9x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-UFLGA
包装: 托盘
78
32099I–01/2012
AT32UC3L016/32/64
8.3.4
Debug Operation
When an external debugger forces the CPU into debug mode, the FLASHCDW continues nor-
mal operation. If the FLASHCDW is configured in a way that requires it to be periodically
serviced by the CPU through interrupts or similar, improper operation or data loss may result
during debugging.
8.4
Functional Description
8.4.1
Bus Interfaces
The FLASHCDW has two bus interfaces, one High Speed Bus (HSB) interface for reads from the
flash memory and writes to the page buffer, and one Peripheral Bus (PB) interface for issuing
commands and reading status from the controller.
8.4.2
Memory Organization
The flash memory is divided into a set of pages. A page is the basic unit addressed when pro-
gramming the flash. A page consists of several words. The pages are grouped into 16 regions of
equal size. Each of these regions can be locked by a dedicated fuse bit, protecting it from acci-
dental modification.
p pages (FLASH_P)
w bytes in each page and in the page buffer (FLASH_W)
pw bytes in total (FLASH_PW)
f general-purpose fuse bits (FLASH_F), used as region lock bits and for other device-specific
purposes
1 security fuse bit
1 User page
8.4.3
User Page
The User page is an additional page, outside the regular flash array, that can be used to store
various data, such as calibration data and serial numbers. This page is not erased by regular
chip erase. The User page can only be written and erased by a special set of commands. Read
accesses to the User page are performed just as any other read accesses to the flash. The
address map of the User page is given in Figure 8-1 on page 80.
8.4.4
Read Operations
The on-chip flash memory is typically used for storing instructions to be executed by the CPU.
The CPU will address instructions using the HSB bus, and the FLASHCDW will access the flash
memory and return the addressed 32-bit word.
In systems where the HSB clock period is slower than the access time of the flash memory, the
FLASHCDW can operate in 0 wait state mode, and output one 32-bit word on the bus per clock
cycle. If the clock frequency allows, the user should use 0 wait state mode, because this gives
the highest performance as no stall cycles are encountered.
The FLASHCDW can also operate in systems where the HSB bus clock period is faster than the
access speed of the flash memory. Wait state support and a read granularity of 64 bits ensure
efficiency in such systems.
Performance for systems with high clock frequency is increased since the internal read word
width of the flash memory is 64 bits. When a 32-bit word is to be addressed, the word itself and
相关PDF资料
PDF描述
221629-6 CONN TERMINATR PLUG BNC 93OHM AU
VE-23Y-IY-F3 CONVERTER MOD DC/DC 3.3V 33W
VJ1825Y184KBCAT4X CAP CER 0.18UF 200V 10% X7R 1825
VJ1825Y274KBCAT4X CAP CER 0.27UF 200V 10% X7R 1825
VE-23Y-IY-F2 CONVERTER MOD DC/DC 3.3V 33W
相关代理商/技术参数
参数描述
AT32UC3L032-D3UR 功能描述:32位微控制器 - MCU UC3L-32KB Flash RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT
AT32UC3L032-ZAUR 功能描述:32位微控制器 - MCU UC3L-32KB Flash 85C RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT
AT32UC3L032-ZAUT 功能描述:32位微控制器 - MCU UC3L-32KB Flash RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT
AT32UC3L064 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:32-bit Atmel AVR Microcontroller
AT32UC3L064_1 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AVR32 32-bit Microcontroller