AT90USB162 Atmel Corporation, AT90USB162 Datasheet - Page 37

• Manufacturer Part Number: AT90USB162
• Manufacturer: Atmel Corporation

Specifications of AT90USB162

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 22
• Ext Interrupts: 21
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 5
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

6.9.2
7707F–AVR–11/10
PLL Control and Status Register – PLLCSR
Figure 6-6.
• Bit 7..5 – Res: Reserved Bits
These bits are reserved bits in the AT90USB82/162 and always read as zero.
• Bit 4..2 – PLLP2:0 PLL prescaler
These bits allow to configure the PLL input prescaler to generate the 8MHz input clock for the
PLL.
Table 6-10.
• Bit 1 – PLLE: PLL Enable
When the PLLE is set, the PLL is started and if needed internal RC Oscillator is started as a PLL
reference clock. If PLL is selected as a system clock source the value for this bit is always 1.
Bit
$29 ($29)
Read/Write
Initial Value
PLLP2
XTAL2
XTAL1
0
0
0
0
1
1
1
1
0
7
R
PLL Clocking System
PLL input prescaler configurations
XTAL
0
Clock Mux (fuse)
6
R
PLLP1
Clock Switch
PLL clock
Prescaler
0
0
1
1
0
0
1
1
Ext.
5
R
0
Int RC
8MHz.
4
PLLP2
R
0
clk
8MHz
PLLP0
0
1
0
1
0
1
0
1
3
PLLP1
R
0
PLL
PLLE
6x
2
PLLP0
R
0
Detector
Lock
AT90USB82/162
Clock Division Factor
PLOCK
1
PLLE
R/W
0/1
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
1
2
0
PLOCK
R
0
clk USB (48MHz)
System Clock
PLLCSR
37