ATMEGA162-16MUR Atmel, ATMEGA162-16MUR Datasheet - Page 40
![MCU AVR 16KB FLASH 16MHZ 44QFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA162-16MUR
Manufacturer Part Number
ATMEGA162-16MUR
Description
MCU AVR 16KB FLASH 16MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA162-16MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN Exposed Pad
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
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External Clock
Clock output
buffer
40
ATmega162/V
Table 13. Internal RC Oscillator Frequency Range.
To drive the device from an external clock source, XTAL1 should be driven as shown in
20. To run the device on an external clock, the CKSEL Fuses must be programmed to “0000”.
Figure 20. External Clock Drive Configuration
When this clock source is selected, start-up times are determined by the SUT Fuses as shown in
Table
Table 14. Start-up Times for the External Clock Selection
When applying an external clock, it is required to avoid sudden changes in the applied clock fre-
quency to ensure stable operation of the MCU. A variation in frequency of more than 2% from
one clock cycle to the next can lead to unpredictable behavior. It is required to ensure that the
MCU is kept in reset during such changes in the clock frequency.
Note that the System Clock Prescaler can be used to implement run-time changes of the internal
clock frequency while still ensuring stable operation. Refer to
41
When the CKOUT Fuse is programmed, the system clock will be output on PortB 0. This mode is
suitable when chip clock is used to drive other circuits on the system. The clock will be output
also during Reset and the normal operation of PortB will be overridden when the fuse is pro-
OSCCAL Value
SUT1..0
for details.
00
01
10
11
0x3F
0x7F
14.
0x00
Start-up Time from
Power-down and
Power-save
Min Frequency in Percentage of
6 CK
6 CK
6 CK
Nominal Frequency
EXTERNAL
SIGNAL
CLOCK
100%
50%
75%
Additional Delay from
Reset (V
Reserved
4.1 ms
65 ms
CC
–
= 5.0V)
Max Frequency in Percentage of
Nominal Frequency
“System Clock Prescaler” on page
Recommended Usage
BOD enabled
Fast rising power
Slowly rising power
100%
150%
200%
2513K–AVR–07/09
Figure
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