參數(shù)資料
型號： AT43USB353M-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述： 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁數(shù)： 17/95頁
文件大小： 568K
代理商： AT43USB353M-AC
17
AT43USB353M
3307B–USB–4/04
The most typical and general program setup for the Reset and Interrupt Vector Addresses are:
USB related interrupt events are routed to reset vectors 13 and 2 through a separate set of
interrupt, interrupt enable and interrupt mask registers that are mapped to the data SRAM
space. These interrupts must be enabled though their control register bits. In the event an
interrupt is generated, the source of the interrupt is identified by reading the interrupt registers.
The USB frame and transaction related interrupt events, such as Start of Frame interrupt, are
grouped in one set of registers: USB Interrupt Flag Register, USB Interrupt Enable Register
and USB Interrupt Mask Register. The USB Bus reset and suspend/resume are grouped in
another set of registers: Suspend/Resume Register, Suspend/Resume Interrupt Enable Reg-
ister and Suspend/Resume Interrupt Mask Register.
Some applications may include firmware routines lasting periods that cannot be interrupted. At
the same time, other less critical events may need attention after the critical routine is com-
pleted. The AT43USB353M solves this problem by having interrupt mask registers in addition
to the interrupt enable registers of the USB related interrupts. The difference between the
mask and enable registers is:
The enable register enables the interrupt so it is captured into the interrupt register. If it is
not enabled and an interrupt occurs, the interrupt will be lost.
The mask register merely masks the interrupt from interrupting the CPU. Upon
unmasking, the pending interrupt is triggered.
Address
Labels
Code
Comments
$000
jmp
RESET
; Reset Handler
$004
jmp
EXT_INT1
; IRQ1 Handler
$00E
jmp
TIM0_OVF
; Timer0 Overflow
Handler
$018
jmp
USB_HW
; USB Handler
;
$00d
MAIN:
ldi r16, high (RAMEND)
; Main Program
start
$00e
out SPH, r16
$00f
ldi r16, low (RAMEND)
$010
out SPL, r16
$011
<instr> xxx
...
...
...
...
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB355 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB355_02 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355_06 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AC 功能描述:8位微控制器 -MCU USB GAME CONTROL w/EMBED HUB-COM TEMP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
AT43USB355E-AU 功能描述:8位微控制器 -MCU USB GAME CONTROL w/ EMBED HUB RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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