AT90USB162-16MUR Atmel, AT90USB162-16MUR Datasheet - Page 28
AT90USB162-16MUR
Manufacturer Part Number
AT90USB162-16MUR
Description
IC AVR MCU 16K FLASH 32QFN
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB82-16MU.pdf
(307 pages)
Specifications of AT90USB162-16MUR
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-TQFN
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
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATSTK526 - 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
Details
Other names
AT90USB162-16MURTR
AT90USB162-16MUTR
AT90USB162-16MUTR
AT90USB162-16MUTR
AT90USB162-16MUTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90USB162-16MUR
Manufacturer:
TT
Quantity:
400 000
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6.2.4
28
AT90USB82/162
Clock Selection Register 1 – CLKSEL1
• Bit 7-6 – RCSUT[1:0]: SUT for RC oscillator
These 2 bits are the SUT value for the RC Oscillator. If the RC oscillator is selected by fuse bits,
the SUT fuse are copied into these bits. A firmware change will not have any effect because this
additionnal start-up time is only used after a reset and not after a clock switch.
• Bit 5-4 – EXSUT[1:0]: SUT for External Oscillator / Low Power Oscillator
These 2 bits are the SUT value for the External Oscillator / Low Power Oscillator. If the External
oscillator / Low Power Oscillator is selected by fuse bits, the SUT fuse are copyed into these
bits. The firmware can modify these bits by writing a new value. This value will be used at the
next start of the External Oscillator / Low Power Oscillator.
• Bit 3 – RCE: Enable RC Oscillator
The RCE bit must be written to logic one to enable the RC Oscillator. The RCE bit must be writ-
ten to logic zero to disable the RC Oscillator.
• Bit 2 – EXTE: Enable External Oscillator / Low Power Oscillator
The OSCE bit must be written to logic one to enable External Oscillator / Low Power Oscillator.
The OSCE bit must be written to logic zero to disable the External Oscillator / Low Power
Oscillator.
• Bit 0 – CLKS: Clock Selector
The CLKS bit must be written to logic one to select the External Oscillator / Low Power Oscillator
as CPU clock. The CLKS bit must be written to logic zero to select the RC Oscillator as CPU
clock. After a reset, the CLKS bit is set by hardware if the External Oscillator / Low Power Oscil-
lator is selected by the fuse bits configuration.
The firmware has to check if the clock is correctly started before selected it.
• Bit 7-4 – RCCKSEL[3:0]: CKSEL for RC oscillator
Clock configuration for the RC Oscillator. After a reset, this part of the register is loaded with the
0010b value that corresponds to the RC oscillator. Modifying this value by firmware before
switching to RC oscillator is prohibited because the RC clock will not start.
• Bit 3-0 – EXCKSEL[3:0]: CKSEL for External oscillator / Low Power Oscillator
Clock configuration for the External Oscillator / Low Power Oscillator. After a reset, if the Exter-
nal oscillator / Low Power Oscillator is selected by fuse bits, this part of the register is loaded
with the fuse configuration. Firmware can modify it to change the start-up time after the clock
switch.
Bit
Read/Write
Initial Value
7
RCCKSE
L3
R/W
0
6
RCCKS
EL2
R/W
0
5
RCCLK
SEL1
R/W
1
R/W
4
RCCLK
SEL0
0
3
EXCKSE
L3
R/W
0
2
EXCKSE
L2
R/W
0
1
EXCLKS
EL1
R/W
0
0
EXCLKS
EL0
R/W
0
7707F–AVR–11/10
CLKSEL1
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