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| 型號(hào)： | AT43USB355M-AC |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| 中文描述： | 8-BIT, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP64 |
| 封裝： | 1.40 MM, PLASTIC, MS-026ACB, LQFP-64 |
| 文件頁(yè)數(shù)： | 21/115頁(yè) |
| 文件大?。?/td> | 610K |
| 代理商： | AT43USB355M-AC |
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21
AT43USB355
2603G–USB–04/06
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 for long periods of time that cannot
be interrupted. At the same time, other less critical events may need attention after the critical
routine is completed. The AT43USB355 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 the 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
...
...
...
...
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT43USB355M-AU | Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
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| AT45BR3214B | 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43USB355M-AU | 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 |
| AT43USB370 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:USB 2.0 Full-Speed Host/Function Processor |
| AT43USB370E-AC | 功能描述:USB 接口集成電路 USB HOST DEVICE CONTROL - COM 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 |
| AT43USB380 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:On-The-Go Upgrade of the AT43USB370 USB 2.0 Full-Speed Host/Function Processor |
| AT43USB380E-AC | 功能描述:USB 接口集成電路 USB OTG/HOST/FUNC DEVICE CNTRL 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 |
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