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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 24/115頁 |
| 文件大小： | 610K |
| 代理商： | AT43USB355M-AC |
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AT43USB355
2603G–USB–04/06
External Reset
An external reset is generated by a low-level on the RESETN pin. Reset pulses longer than
200 ns will generate a reset. Shorter pulses are not guaranteed to generate a reset. When the
applied signal reaches the Reset Threshold Voltage - V
RST
on its positive edge, the delay timer
starts the MCU after the Time-out period t
TOUT
has expired.
Figure 10.
External Reset During Operation
Watchdog Timer
Reset
When the watchdog times out, it will generate a short reset pulse of 1 XTAL cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
TOUT
.
Figure 11.
Watchdog Reset During Operation
Non-USB Related
Interrupt Handling
The AT43USB355 has two non-USB 8-bit Interrupt Mask control registers; GIMSK (General
Interrupt Mask Register) and TIMSK (Timer/Counter Interrupt Mask Register).
When an interrupt occurs, the Global Interrupt Enable I-bit is cleared (zero) and all interrupts
are disabled. The user software can set (one) the I-bit to enable nested interrupts. The I-bit is
set (one) when a Return from Interrupt instruction, RETI, is executed.
For Interrupts triggered by events that can remain static (e.g. the Output Compare register1
matching the value of Timer/Counter1) the interrupt flag is set when the event occurs. If the
interrupt flag is cleared and the interrupt condition persists, the flag will not be set until the
event occurs the next time.
When the Program Counter is vectored to the actual interrupt vector in order to execute the
interrupt handling routine, hard-ware clears the corresponding flag that generated the inter-
rupt. Some of the interrupt flags can also be cleared by writing a logic one to the flag bit
position(s) to be cleared.
t
TOUT
V
RST
VCC
RESET
TIME-OUT
INTERNAL
RESET
t
TOUT
VCC
RESET
WDT
TIME-OUT
RESET
TIME-OUT
1 XTAL Cycle
INTERNAL
RESET
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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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