參數(shù)資料
型號(hào): ATF16V8B-15PU
廠商: Atmel
文件頁(yè)數(shù): 19/26頁(yè)
文件大?。?/td> 0K
描述: IC PLD 15NS 20DIP
標(biāo)準(zhǔn)包裝: 18
系列: 16V8
可編程類型: EE PLD
宏單元數(shù): 8
輸入電壓: 5V
速度: 15ns
安裝類型: 通孔
封裝/外殼: 20-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 20-PDIP
包裝: 管件
26
7707F–AVR–11/10
AT90USB82/162
6.1.4
USB Clock – clk
USB
The USB is provided with a dedicated clock domain. This clock is generated with an on-chip PLL
running at 48MHz. The PLL always multiply its input frequency by 6. Thus the PLL clock register
should be programmed by software to generate a 8MHz clock on the PLL input.
6.2
Clock Switch
In the AT90USB82/162 product, the Clock Multiplexer and the System Clock Prescaler can be
modified by software.
6.2.1
Exemple of use
The modification can occur when the device enters in USB Suspend mode. It then switches from
External Clock to Calibrated RC Oscillator in order to reduce consumption. In such a configura-
tion, the External Clock is disabled.
The firmware can use the watchdog timer to be woken-up from power-down in order to check if
there is an event on the application.
If an event occurs on the application or if the USB controller signals a non-idle state on the USB
line (Resume for example), the firmware switches the Clock Multiplexer from the Calibrated RC
Oscillator to the External Clock.
Figure 6-2.
Example of clock switching with wake-up from USB Host
USB
CPU Clock
External
Oscillator
RC oscillator
Ext
RC
Ext
non-Idle
Idle
(Suspend)
non-Idle
3m
s
resume
1
1 Resume from Host
watchdog wake-up
from power-down
相關(guān)PDF資料
PDF描述
IDT71342SA45J8 IC SRAM 32KBIT 45NS 52PLCC
2-1734839-5 CONN FPC 25POS .5MM RT ANG SMD
AMM43DRKS CONN EDGECARD 86POS DIP .156 SLD
HSC60DRAS-S734 CONN EDGECARD 120PS .100 R/A PCB
ATF16V8B-15JU IC PLD 15NS 20PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATF16V8B-15SC 功能描述:EEPLD - 電子擦除可編程邏輯設(shè)備 10NS250 GATES 20 PIN5V - 15NS RoHS:否 制造商:Atmel 邏輯系列:ATF16V8BQL 最大工作頻率:62 MHz 可編程輸入/輸出端數(shù)量:20 電源電流:20 mA 延遲時(shí)間:15 ns 每個(gè)宏指令的積項(xiàng)數(shù):8 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 大電池?cái)?shù)量:8 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-20
ATF16V8B-15SI 功能描述:EEPLD - 電子擦除可編程邏輯設(shè)備 250 Gate RoHS:否 制造商:Atmel 邏輯系列:ATF16V8BQL 最大工作頻率:62 MHz 可編程輸入/輸出端數(shù)量:20 電源電流:20 mA 延遲時(shí)間:15 ns 每個(gè)宏指令的積項(xiàng)數(shù):8 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 大電池?cái)?shù)量:8 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-20
ATF16V8B-15SI SL383 制造商:Atmel Corporation 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz CMOS Technology 5V 20-Pin SOIC T/R
ATF16V8B-15SU 功能描述:EEPLD - 電子擦除可編程邏輯設(shè)備 15 ns 20 I/O Pins 8 macorcells 8 reg RoHS:否 制造商:Atmel 邏輯系列:ATF16V8BQL 最大工作頻率:62 MHz 可編程輸入/輸出端數(shù)量:20 電源電流:20 mA 延遲時(shí)間:15 ns 每個(gè)宏指令的積項(xiàng)數(shù):8 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 大電池?cái)?shù)量:8 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-20
ATF16V8B-15SU SL383 制造商:Atmel Corporation 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz 5V 20-Pin SOIC 制造商:Atmel Corporation 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz CMOS Technology 5V 20-Pin SOIC 制造商:Atmel 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz CMOS Technology 5V 20-Pin SOIC 制造商:Atmel 功能描述:SPLD ATF16V8B Family 250 Gates 8 Macro Cells 62MHz 5V 20-Pin SOIC