atmega323l ATMEL Corporation, atmega323l Datasheet - Page 44
atmega323l
Manufacturer Part Number
atmega323l
Description
Atmega323 8-bit Avr Microcontroller With 32k Bytes Of In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA323L.pdf
(247 pages)
- Current page: 44 of 247
- Download datasheet (4Mb)
44
ATmega323(L)
Figure 31. Prescaler for Timer/Counter2
The clock source for Timer/Counter2 is named PCK2. PCK2 is by default connected to
the main system clock CK. By setting the AS2 bit in ASSR, Timer/Counter2 is asynchro-
nously clocked from the PC6(TOSC1) pin. This enables use of Timer/Counter2 as a
Real Time Counter (RTC). When AS2 is set, pins PC6(TOSC1) and PC7(TOSC2) are
disconnected from Port C. A crystal can then be connected between the PC6(TOSC1)
and PC7(TOSC2) pins to serve as an independent clock source for Timer/Counter2.
The Oscillator is optimized for use with a 32.768 kHz crystal. Applying an external clock
source to TOSC1 is not recommended. Setting the PSR2 bit in SFIOR resets the pres-
caler. This allows the user to operate with a predictable prescaler.
XTAL1
PSR2
CS20
CS21
CS22
AS2
CK
PCK2
Clear
TIMER/COUNTER2 CLOCK SOURCE
0
10-BIT T/C PRESCALER
TCK2
1457G–AVR–09/03
Related parts for atmega323l
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: