ATMEGA165P-16MUR Atmel, ATMEGA165P-16MUR Datasheet - Page 30
![IC MCU AVR 16K 16MHZ 64MLF](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA165P-16MUR
Manufacturer Part Number
ATMEGA165P-16MUR
Description
IC MCU AVR 16K 16MHZ 64MLF
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165P-16MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
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
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN, Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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7.6
8019K–AVR–11/10
Low-frequency Crystal Oscillator
The CKSEL0 Fuse together with the SUT1..0 Fuses select the start-up times as shown in
7-6.
Table 7-6.
Notes:
The Low-frequency Crystal Oscillator is optimized for use with a 32.768 kHz watch crystal.
When selecting crystals, load capasitance and crystal’s Equivalent Series Resistance, ESR
must be taken into consideration. Both values are specified by the crystal vendor. ATmega165P
oscillator is optimized for very low power consumption, and thus when selecting crystals, see
Table 7-7
Table 7-7.
Note:
The Low-frequency Crystal Oscillator provides an internal load capacitance of typical 6.5 pF.
Crystals with recommended 6.5 pF load capacitance can be without external capacitors as
shown in
CKSEL0
0
0
0
0
1
1
1
1
1. These options should only be used when not operating close to the maximum frequency of the
2. These options are intended for use with ceramic resonators and will ensure frequency stability
1. Maximum ESR is typical value based on characterization.
Figure 7-3 on page
for maximum ESR recommendations on 9 pF and 6.5 pF crystals.
device, and only if frequency stability at start-up is not important for the application. These
options are not suitable for crystals.
at start-up. They can also be used with crystals when not operating close to the maximum fre-
quency of the device, and if frequency stability at start-up is not important for the application.
SUT1..0
Start-up Times for the Crystal Oscillator Clock Selection
Maximum ESR Recommendation for 32.768 kHz Crystal
00
01
10
11
00
01
10
11
Crystal CL (pF)
6.5
9
Start-up Time from
Power-down and
31.
Power-save
258 CK
258 CK
1K CK
1K CK
1K CK
16K CK
16K CK
16K CK
(2)
(2)
(2)
(1)
(1)
Additional Delay
14CK + 4.1 ms
14CK + 4.1 ms
14CK + 4.1 ms
14CK + 65 ms
14CK + 65 ms
14CK + 65 ms
(V
from Reset
CC
14CK
14CK
= 5.0V)
Max ESR [kΩ]
ATmega165P
Recommended Usage
Ceramic resonator, fast
rising power
Ceramic resonator, slowly
rising power
Ceramic resonator, BOD
enabled
Ceramic resonator, fast
rising power
Ceramic resonator, slowly
rising power
Crystal Oscillator, BOD
enabled
Crystal Oscillator, fast
rising power
Crystal Oscillator, slowly
rising power
60
35
(1)
Table
30
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