参数资料
| 型号： | AT91M42800A-33AI |
| 厂商： | Atmel |
| 文件页数： | 8/27页 |
| 文件大小： | 0K |
| 描述： | IC ARM7 MCU 144 TQFP |
| 标准包装： | 60 |
| 系列： | AT91 |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，SPI，UART/USART |
| 外围设备： | WDT |
| 输入/输出数： | 54 |
| 程序存储器类型： | ROMless |
| RAM 容量： | 8K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 144-LQFP |
| 包装： | 托盘 |
| 配用： | AT91EB42-ND - KIT EVAL FOR ARM AT91M42800A |
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16
1779ES–ATARM–14-Apr-06
AT91M42800A
With a 16-bit wide data bus, the user can program the EBI to control one 16-bit device (Byte
Access Select mode) or two 8-bit devices in parallel that emulate a
16-bit memory (Byte Write Access mode).
The External Bus Interface also features the Early Read Protocol, configurable for all the
devices, which significantly reduces access time requirements on an external device.
8.
Peripherals
The AT91M42800A peripherals are connected to the 32-bit wide Advanced Peripheral Bus.
Peripheral registers are only word accessible. Byte and half-word accesses are not supported. If
a byte or a half-word access is attempted, the memory controller automatically masks the lowest
address bits and generates a word access.
Each peripheral has a 16-Kbyte address space allocated (the AIC only has a 4-Kbyte address
space).
8.1
Peripheral Registers
The following registers are common to all peripherals:
Control Register – Write-only register that triggers a command when a one is written to the
corresponding position at the appropriate address. Writing a zero has no effect.
Mode Register – read/write register that defines the configuration of the peripheral. Usually
has a value of 0x0 after a reset.
Data Registers – read and/or write register that enables the exchange of data between the
processor and the peripheral.
Status Register – Read-only register that returns the status of the peripheral.
Enable/Disable/Status Registers – shadow command registers. Writing a one in the Enable
Register sets the corresponding bit in the Status Register. Writing a one in the Disable
Register resets the corresponding bit and the result can be read in the Status Register.
Writing a bit to zero has no effect. This register access method maximizes the efficiency of bit
manipulation, and enables modification of a register with a single non-interruptible
instruction, replacing the costly read-modify-write operation.
Unused bits in the peripheral registers are shown as “–” and must be written at 0 for upward
compatibility. These bits read 0.
8.2
Peripheral Interrupt Control
The Interrupt Control of each peripheral is controlled from the status register using the interrupt
mask. The status register bits are ANDed to their corresponding interrupt mask bits and the
result is then ORed to generate the Interrupt Source signal to the Advanced Interrupt Controller.
The interrupt mask is read in the Interrupt Mask Register and is modified with the Interrupt
Enable Register and the Interrupt Disable Register. The enable/disable/status (or mask) makes
it possible to enable or disable peripheral interrupt sources with a non-interruptible single
instruction. This eliminates the need for interrupt masking at the AIC or Core level in real-time
and multi-tasking systems.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT91M42800A-33AI SL383 | 功能描述:IC ARM MCU 16BIT 144TQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| AT91M42800A-33AI-T | 功能描述:IC MCU 32BIT ROMLESS 144LQFP 制造商:microchip technology 系列:AT91 包装:带卷（TR） 零件状态:停產 核心处理器:ARM7? 核心尺寸:16/32-位 速度:33MHz 连接性:EBI/EMI，SPI，UART/USART 外设:WDT I/O 数:54 程序存储容量:- 程序存储器类型:ROMless EEPROM 容量:- RAM 容量:8K x 8 电压 - 电源（Vcc/Vdd）:2.7 V ~ 3.6 V 数据转换器:- 振荡器类型:外部 工作温度:-40°C ~ 85°C（TA） 封装/外壳:144-LQFP 供应商器件封装:144-LQFP（20x20） 基本零件编号:AT91M42800 标准包装:1,000 |
| AT91M42800A-33AU | 功能描述:ARM微控制器 - MCU 8kB SRAM 33MHz - PWM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| AT91M42800A-33AU-999 | 功能描述:ARM微控制器 - MCU Ind. Temp Green RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT |
| AT91M42800A-33CI | 功能描述:IC ARM7 MCU 144 BGA RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR，WDT 输入/输出数:32 程序存储器容量:32KB（32K x 8） 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP（0.600"，15.24mm） 包装:管件 |
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