參數(shù)資料
型號(hào)： AT43USB325E-AU
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, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝： 1.40 MM HEIGHT, GREEN, PLASTIC, MS-026ACB, LQFP-64
文件頁(yè)數(shù)： 53/109頁(yè)
文件大?。?/td> 643K
代理商： AT43USB325E-AU
53
3355C–USB–4/05
AT43USB325
down-counting compare match is not interpreted to be reached before the next time the counter
reaches the TOP value, making a one-period PWM pulse.
Note:
In PWM mode, the Timer Overflow Flag1, TOV1, is set when the counter advances from $0000.
Timer Overflow Interrupt1 operates exactly as in normal Timer/Counter mode, i.e. it is executed
when TOV1 is set provided that Timer Overflow Interrupt1 and global interrupts are enabled.
This also applies to the Timer Output Compare1 flags and interrupts.
X = A or B
6.5
Watchdog Timer
The Watchdog Timer is clocked from a 1 MHz clock derived from the 6 MHz on chip oscillator.
By controlling the Watchdog Timer prescaler, the Watchdog reset interval can be adjusted, see
Table 6-8
for a detailed description. The WDR (Watchdog Reset) instruction resets the Watch-
dog Timer. Eight different clock cycle periods can be selected to determine the reset period. If
the reset period expires without another Watchdog reset, the AT43USB325 resets and executes
from the reset vector.
To prevent unintentional disabling of the watchdog, a special turn-off sequence must be followed
when the watchdog is disabled. Refer to the description of the Watchdog Timer Control Register
for details.
Figure 6-6.
Watchdog Timer
Table 6-7.
PWM Outputs OCR1X = $0000 or Top
COM1X1
COM1X0
OCR1X
Output OC1X
1
0
$0000
L
1
0
TOP
H
1
1
$0000
H
1
1
TOP
L
O
O
O
O
O
O
O
1 MHz Clock
MCU Reset
WDE
WDP2
WDP1
WDP0
Watchdog
Reset
Watchdog Prescaler
O
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB326 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB326_06 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub
AT43USB326-AC 功能描述:USB 接口集成電路 USB KEYBOARD F/LOGI- TECH - 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
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
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