參數(shù)資料
型號: AT90USB162-16MU
廠商: Atmel
文件頁數(shù): 20/38頁
文件大?。?/td> 0K
描述: MCU AVR USB 16K FLASH 32-QFN
產(chǎn)品培訓模塊: MCU Product Line Introduction
megaAVR Introduction
標準包裝: 2,450
系列: AVR® 90USB
核心處理器: AVR
芯體尺寸: 8-位
速度: 16MHz
連通性: EBI/EMI,PS/2,SPI,UART/USART,USB
外圍設(shè)備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 22
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 32-VFQFN 裸露焊盤
包裝: 托盤
配用: ATSTK600-ND - DEV KIT FOR AVR/AVR32
ATSTK526-ND - KIT STARTER FOR AT90USB82/162
ATAVRDRAGON-ND - KIT DRAGON FLASH MEM AVR
ATSTK525-ND - KIT STARTER FOR AT90USB
AT90USBKEY2-ND - KIT DEMO FOR AT90USB
27
7707F–AVR–11/10
AT90USB82/162
Figure 6-3.
Example of clock switching with wake-up from Device
6.2.2
Clock switch Algorythm
6.2.2.1
Swith from external clock to RC clock
if (Usb_suspend_detected())
// if (UDINT.SUSPI == 1)
{
Usb_ack_suspend();
// UDINT.SUSPI = 0;
Usb_freeze_clock();
// USBCON.FRZCLK = 1;
Disable_pll();
// PLLCSR.PLLE = 0;
Enable_RC_clock();
// CLKSEL0.RCE = 1;
while (!RC_clock_ready());
// while (CLKSTA.RCON != 1);
Select_RC_clock();
// CLKSEL0.CLKS = 0;
Disable_external_clock();
// CLKSEL0.EXTE = 0;
}
6.2.2.2
Switch from RC clock to external clock
if (Usb_wake_up_detected())
// if (UDINT.WAKEUPI == 1)
{
Usb_ack_wake_up();
// UDINT.WAKEUPI = 0;
Enable_external_clock();
// CLKSEL0.EXTE = 1;
while (!External_clock_ready()); // while (CLKSTA.EXTON != 1);
Select_external_clock();
// CLKSEL0.CLKS = 1;
Enable_pll();
// PLLCSR.PLLE = 1;
Disable_RC_clock();
// CLKSEL0.RCE = 0;
while (!Pll_ready());
// while (PLLCSR.PLOCK != 1);
Usb_unfreeze_clock();
// USBCON.FRZCLK = 0;
}
6.2.3
Clock Selection Register 0 – CLKSEL0
USB
CPU Clock
External
Oscillator
RC oscillator
Ext
RC
Ext
non-Idle
Idle
(Suspend)
non-Idle
3m
s
upstream-resume
2
2 Upstream Resume from device
watchdog wake-up
from power-down
Bit
7
6
543
2
1
0
RCSUT1
RCSUT0
EXSUT1
EXSUT0
RCE
EXTE
-
CLKS
CLKSEL0
Read/Write
R/W
R
R/W
Initial Value
0
See Bit Description
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AT90USB162-16MUR 功能描述:8位微控制器 -MCU 16K Flash RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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