ATMEGA168PA-PU Atmel, ATMEGA168PA-PU Datasheet - Page 34

MCU, 8BIT, AVR, 16K FLASH, 28PDIP

ATMEGA168PA-PU

Manufacturer Part Number
ATMEGA168PA-PU
Description
MCU, 8BIT, AVR, 16K FLASH, 28PDIP
Manufacturer
Atmel
Datasheet

Specifications of ATMEGA168PA-PU

Controller Family/series
Atmega
No. Of I/o's
23
Eeprom Memory Size
512Byte
Ram Memory Size
1KB
Cpu Speed
20MHz
No.
RoHS Compliant
Core Size
8bit
Program Memory Size
16KB
Oscillator Type
External, Internal
Rohs Compliant
Yes

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA168PA-PU
Manufacturer:
TI
Quantity:
1 240
8.7
8.8
8271C–AVR–08/10
128 kHz Internal Oscillator
External Clock
When this Oscillator is selected, start-up times are determined by the SUT Fuses as shown in
Table
Table 8-12.
Note:
The 128 kHz internal Oscillator is a low power Oscillator providing a clock of 128 kHz. The fre-
quency is nominal at 3V and 25°C. This clock may be select as the system clock by
programming the CKSEL Fuses to “11” as shown in
Table 8-13.
Note:
When this clock source is selected, start-up times are determined by the SUT Fuses as shown in
Table
Table 8-14.
Note:
To drive the device from an external clock source, XTAL1 should be driven as shown in
8-4. To run the device on an external clock, the CKSEL Fuses must be programmed to “0000”
(see
Table 8-15.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
BOD enabled
Fast rising power
Slowly rising power
Power Conditions
Table
8-12.
8-14.
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to
2.
1. Note that the 128 kHz oscillator is a very low power clock source, and is not designed for high
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to
The device is shipped with this option selected.
8-15).
14CK + 4.1 ms to ensure programming mode can be entered.
accuracy.
14CK + 4.1 ms to ensure programming mode can be entered.
Start-up times for the internal calibrated RC Oscillator clock selection
128 kHz Internal Oscillator Operating Modes
Start-up Times for the 128 kHz Internal Oscillator
Crystal Oscillator Clock Frequency
Nominal Frequency
Frequency
0 - 20 MHz
128 kHz
Start-up Time from Power-
Start-up Time from Power-
down and Power-save
down and Power-save
Reserved
(1)
Reserved
6 CK
6 CK
6 CK
6 CK
6 CK
6 CK
Table
8-13.
Additional Delay from
Additional Delay from
Reset (V
14CK + 65 ms
14CK + 4.1 ms
14CK + 64 ms
14CK + 4 ms
14CK
14CK
Reset
CC
CKSEL3...0
CKSEL3...0
(1)
(1)
= 5.0V)
0011
0000
(2)
SUT1...0
SUT1...0
00
01
10
11
Figure
00
01
10
11
34

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