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參數(shù)資料
| 型號(hào)： | AT91M42800A-33CI SL383 |
| 廠商： | Atmel |
| 文件頁數(shù)： | 8/27頁 |
| 文件大小： | 0K |
| 描述： | IC ARM MCU 16BIT 144BGA |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | AT91 |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 33MHz |
| 連通性： | EBI/EMI，SPI，UART/USART |
| 外圍設(shè)備： | WDT |
| 輸入/輸出數(shù)： | 54 |
| 程序存儲(chǔ)器類型： | ROMless |
| RAM 容量： | 8K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 144-LFBGA |
| 包裝： | 帶卷 (TR) |
| 配用： | AT91EB42-ND - KIT EVAL FOR ARM AT91M42800A |
| 其它名稱： | AT91M42800A33CISL |
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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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT91M42800A-33CI-T | 功能描述:IC MCU 32BIT ROMLESS 144BGA 制造商:microchip technology 系列:AT91 包裝:帶卷（TR） 零件狀態(tài):停產(chǎn) 核心處理器:ARM7? 核心尺寸:16/32-位 速度:33MHz 連接性:EBI/EMI，SPI，UART/USART 外設(shè):WDT I/O 數(shù):54 程序存儲(chǔ)容量:- 程序存儲(chǔ)器類型:ROMless EEPROM 容量:- RAM 容量:8K x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器類型:外部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:144-LFBGA 供應(yīng)商器件封裝:144-BGA（13x13） 基本零件編號(hào):AT91M42800 標(biāo)準(zhǔn)包裝:1,000 |
| AT91M42800A-33CJ | 功能描述:ARM微控制器 - MCU BGA IND TEMP RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| AT91M42800A-33CJ-999 | 功能描述:ARM微控制器 - MCU BGA Ind. Temp RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| AT91M43300 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers |
| AT91M43300-12CC-1.8 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers |
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