參數(shù)資料
型號(hào)： AT91F40816-33CI
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： ARM Thumb Microcontrollers
中文描述： 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PBGA120
封裝： BGA-120
文件頁(yè)數(shù)： 14/22頁(yè)
文件大小： 248K
代理商： AT91F40816-33CI
14
AT91F40816
1348D–ATARM–03/04
Communications can be selected on either COM1 or COM2 and the serial link speed is
limited to 115200 bauds. Because the serial link is the bottleneck in this configuration,
the Flash programming lasts 110 seconds per Mbytes.
Programming time can be reached by using a faster programming system. An EB40
(AT91 Evaluation Board for the x40 Series Microcontroller) is capable of running a serial
link at up to 500 Kbits/sec and can match the fastest programming allowed by the Flash,
for example, about 40 seconds per Mbyte when the word programming becomes the
bottleneck.
Peripherals
The AT91F40816 peripherals are connected to the 32-bit wide Advanced Peripheral
Bus.
Peripheral registers are only word accessible. Byte and half-word accesses are not sup-
ported. If a byte or a half-word access is attempted, the memory controller automatically
masks the lowest address bits and generates an word access.
Each peripheral has a 16-Kbyte address space allocated (the AIC only has a 4-Kbyte
address space).
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 must be written at 0 for upward compatibility.
These bits read 0.
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 Inter-
rupt 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.
Peripheral Data Controller
The AT91F40816 has a 4-channel PDC dedicated to the two on-chip USARTs. One
PDC channel is dedicated to the receiver and one to the transmitter of each USART.
The user interface of a PDC channel is integrated in the memory space of each USART.
It contains a 32-bit Address Pointer Register (RPR or TPR) and a 16-bit Transfer
Counter Register (RCR or TCR). When the programmed number of transfers are per-
相關(guān)PDF資料
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AT91FR40161 ARM Thumb Microcontrollers
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AT91FR40162 AT91 ARM Thumb Microcontrollers
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參數(shù)描述
AT91FR40161 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:ARM Thumb Microcontrollers
AT91FR40161-CI 功能描述:IC MCU ARM7 2M FLASH 120-BGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 標(biāo)準(zhǔn)包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設(shè)備:POR，WDT 輸入/輸出數(shù):32 程序存儲(chǔ)器容量:32KB（32K x 8） 程序存儲(chǔ)器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件
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AT91FR40162_02 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers
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