AT90USB162-16AUR Atmel, AT90USB162-16AUR Datasheet - Page 27

• Manufacturer Part Number: AT90USB162-16AUR
• Description: IC AVR MCU 16K FLASH 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90USBr

Specifications of AT90USB162-16AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, PS/2, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Processor Series: AT90USBx
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI/USART/debugWIRE
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATSTK525, ATSTK526, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
• Minimum Operating Temperature: - 40 C
• Cpu Family: AT90
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Total Internal Ram Size: 512Byte
• # I/os (max): 22
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: TQFP
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK526 - KIT STARTER FOR AT90USB82/162ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK525 - KIT STARTER FOR AT90USBAT90USBKEY2 - KIT DEMO FOR AT90USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: AT90USB162-16AU; AT90USB162-16AURTR; AT90USB162-16AUTR; AT90USB162-16AUTR

6.2.2
6.2.2.1
6.2.2.2
6.2.3
7707F–AVR–11/10
USB
CPU Clock
External
Oscillator
RC oscillator
Clock switch Algorythm
Clock Selection Register 0 – CLKSEL0
Swith from external clock to RC clock
Switch from RC clock to external clock
non-Idle
Figure 6-3.
Bit
Read/Write
Initial Value
if (Usb_suspend_detected())
{
}
if (Usb_wake_up_detected())
{
}
Usb_ack_suspend();
Usb_freeze_clock();
Disable_pll();
Enable_RC_clock();
while (!RC_clock_ready());
Select_RC_clock();
Disable_external_clock();
Usb_ack_wake_up();
Enable_external_clock();
while (!External_clock_ready()); // while (CLKSTA.EXTON != 1);
Select_external_clock();
Enable_pll();
Disable_RC_clock();
while (!Pll_ready());
Usb_unfreeze_clock();
Ext
3m
Idle
s
Example of clock switching with wake-up from Device
7
RCSUT1
R/W
0
6
RCSUT0
R/W
0
5
EXSUT1
R/W
0
watchdog wake-up
from power-down
4
EXSUT0
R/W
0
(Suspend)
2 Upstream Resume from device
RC
// if (UDINT.SUSPI == 1)
// UDINT.SUSPI = 0;
// USBCON.FRZCLK = 1;
// PLLCSR.PLLE = 0;
// CLKSEL0.RCE = 1;
// while (CLKSTA.RCON != 1);
// CLKSEL0.CLKS = 0;
// CLKSEL0.EXTE = 0;
// if (UDINT.WAKEUPI == 1)
// UDINT.WAKEUPI = 0;
// CLKSEL0.EXTE = 1;
// CLKSEL0.CLKS = 1;
// PLLCSR.PLLE = 1;
// CLKSEL0.RCE = 0;
// while (PLLCSR.PLOCK != 1);
// USBCON.FRZCLK = 0;
3
RCE
R/W
See Bit Description
2
EXTE
R/W
AT90USB82/162
1
-
R
upstream-resume
0
CLKS
R/W
2
non-Idle
CLKSEL0
Ext
27