- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381451 > AT43USB320A-AC (ATMEL CORP) Full-speed USB Microcontroller with an Embedded Hub PDF資料下載
參數(shù)資料
| 型號： | AT43USB320A-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 an Embedded Hub |
| 中文描述： | 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, MS-026AED, LQFP-100 |
| 文件頁數(shù)： | 22/115頁 |
| 文件大小： | 722K |
| 代理商： | AT43USB320A-AC |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當(dāng)前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁
22
AT43USB320A
1443E–USB–4/04
Figure 5.
AT43USB320A Interrupt Structure
Reset Sources
The AT43USB320A has four sources of reset:
Power-on Reset
– The MCU is reset when the supply voltage is below the power-on reset
threshold.
External Reset
– The MCU is reset when a low level is present on the RESET pin for
more than 50 ns.
Watchdog Reset
– The MCU is reset when the watchdog timer period expires and the
watchdog is enabled.
USB Reset
– A USB bus reset is defined as a SE0 (single ended zero) of at least 4 slow
speed USB clock cycles received by Port0. The internal reset pulse to the USB hardware
and microcontroller lasts for 24 oscillator periods.
When the USB hardware is reset, the compound device is de-configured and has to be re-
enumerated by the host. When the microcontroller is reset, all I/O registers are then set to their
initial values, and the program starts execution from address $000. The instruction placed in
address $000 must be a JMP instruction to the reset handling routine. If the program never
enables an interrupt source, the interrupt vectors are not used, and regular program code can
be placed at these locations. The circuit diagram in Figure 6 shows the reset logic. The user
can select the start-up time according to typical oscillator start-up. The number of WDT oscilla-
tor cycles used for each time-out is shown in Table 7.
Suspend/Resume
Register
Suspend/Resume
Interrupt Enable
Register
USB Interrupt
Status Register
USB Interrupt
Enable Register
USB
UART UDRE
SPI STC
TIMER0 OVF
TIMER1 OVF
TIMER1 COMPB
TIMER1 COMPA
TIMER1 CAPT
INT1
INT0, SUSP/RSM
RESET
Microcontroller
Interrupt
Logic
13
12
9
8
7
6
5
4
3
2
1
SOF
EOF2
FEP2
FEP1
FEP0
RESERVED
HEP0
FRMWUP
RSM
GLB SUSP
UART RX
10
11
UART TX
EOF1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT43USB321 | Full-speed USB Hub/Function Microcontroller |
| AT43USB325E-AC | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB325E-AU | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB326-AC | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB326-AU | Multimedia USB Keyboard Controller with Embedded Hub |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43USB321 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Hub/Function Microcontroller |
| AT43USB324AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER |
| AT43USB324YC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER |
| AT43USB325 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
| AT43USB325_05 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。