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參數(shù)資料
| 型號： | AT43USB326-AC |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Multimedia USB Keyboard Controller with Embedded Hub |
| 中文描述： | 8-BIT, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM THICKNESS, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48 |
| 文件頁數(shù)： | 7/102頁 |
| 文件大?。?/td> | 511K |
| 代理商： | AT43USB326-AC |
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7
AT43USB326
3313D–USB–04/06
instruction is being executed, the next instruction is pre-fetched from the program memory.
This concept enables instructions to be executed in every clock cycle. The program memory is
a downloadable SRAM or a mask programmed ROM.
With the relative jump and call instructions, the whole 24K address space is directly accessed.
Most AVR instructions have a single 16-bit word format. Every program memory address con-
tains a 16- or 32-bit instruction.
During interrupts and subroutine calls, the return address Program Counter (PC) is stored on
the stack. The stack is effectively allocated in the general data SRAM, and consequently, the
stack size is only limited by the total SRAM size and the usage of the SRAM. All user pro-
grams must initialize the Stack Pointer (SP) in the reset routine (before subroutines or
interrupts are executed). The 10-bit SP is read/write accessible in the I/O space.
The 1-Kbyte data SRAM can be easily accessed through the five different addressing modes
supported in the AVR architecture.
The memory spaces in the AVR architecture are all linear and regular memory maps. A flexi-
ble interrupt module has its control registers in the I/O space with an additional global interrupt
enable bit in the status register. All interrupts have a separate interrupt vector in the interrupt
vector table at the beginning of the program memory. The interrupts have priority in accor-
dance with their interrupt vector position. The lower the interrupt vector address, the higher the
priority.
The General-
purpose
Register File
All register operating instructions in the instruction set have direct and single cycle access to
all registers. The only exception is the five constant arithmetic and logic instructions SBCI,
SUBI, CPI, ANDI, and ORI between a constant and a register, and the LDI instruction for load
Table 1.
AVR CPU General-purpose Working Register
Register
Address
Comment
R0
$00
R1
$01
R2
$02
..
R13
$0D
R14
$0E
R15
$0F
R16
$10
R17
$11
..
R26
$1A
X-register low byte
R27
$1B
X-register high byte
R28
$1C
Y-register low byte
R29
$1D
Y-register high byte
R30
$1E
Z-register low byte
R31
$1F
Z-register high byte
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT43USB326-AU | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB351M-AC | Full-speed/Low-speed USB Microcontroller with ADC and PWM |
| AT43USB353M-AC | Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| AT43USB355E-AC | Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| AT43USB355E-AU | Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43USB326-AU | 功能描述:USB 接口集成電路 USB KEYBOARD FOR LOGITECH - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| AT43USB351M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
| AT43USB351M_04 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed/ Low-speed USB Microcontroller with ADC and PWM |
| AT43USB351M-AC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed/ Low-speed USB Microcontroller with ADC and PWM |
| AT43USB353M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
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