ATMEGA8-16MU Atmel, ATMEGA8-16MU Datasheet - Page 99
![IC AVR MCU 8K 16MHZ 5V 32-QFN](/photos/12/32/123219/atmega8-16mu_sml.jpg)
ATMEGA8-16MU
Manufacturer Part Number
ATMEGA8-16MU
Description
IC AVR MCU 8K 16MHZ 5V 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8-16MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Controller Family/series
AVR MEGA
No. Of I/o's
23
Eeprom Memory Size
512Byte
Ram Memory Size
1KB
Cpu Speed
16MHz
Rohs Compliant
Yes
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 99 of 302
- Download datasheet (6Mb)
Timer/Counter 1 –
TCNT1H and TCNT1L
Output Compare
Register 1 A –
OCR1AH and OCR1AL
Output Compare
Register 1 B –
OCR1BH and OCR1BL
2486Z–AVR–02/11
Table 40. Clock Select Bit Description
If external pin modes are used for the Timer/Counter1, transitions on the T1 pin will clock the
counter even if the pin is configured as an output. This feature allows software control of the
counting.
The two Timer/Counter I/O locations (TCNT1H and TCNT1L, combined TCNT1) give direct
access, both for read and for write operations, to the Timer/Counter unit 16-bit counter. To
ensure that both the high and Low bytes are read and written simultaneously when the CPU
accesses these registers, the access is performed using an 8-bit temporary High byte Register
(TEMP). This temporary register is shared by all the other 16-bit registers.
Registers” on page 77.
Modifying the counter (TCNT1) while the counter is running introduces a risk of missing a Com-
pare Match between TCNT1 and one of the OCR1x Registers.
Writing to the TCNT1 Register blocks (removes) the Compare Match on the following timer clock
for all compare units.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
CS12
0
0
0
0
1
1
1
1
CS11
0
0
1
1
0
0
1
1
R/W
R/W
R/W
7
0
7
0
7
0
CS10
0
1
0
1
0
1
0
1
R/W
R/W
R/W
6
0
6
0
6
0
Description
No clock source. (Timer/Counter stopped)
clk
clk
clk
clk
clk
External clock source on T1 pin. Clock on falling edge
External clock source on T1 pin. Clock on rising edge
R/W
R/W
R/W
I/O
I/O
I/O
I/O
I/O
5
0
5
0
5
0
/1 (No prescaling)
/8 (From prescaler)
/64 (From prescaler)
/256 (From prescaler)
/1024 (From prescaler)
R/W
R/W
R/W
OCR1A[15:8]
OCR1B[15:8]
4
TCNT1[15:8]
0
4
0
4
0
OCR1A[7:0]
OCR1B[7:0]
TCNT1[7:0]
R/W
R/W
R/W
3
0
3
0
3
0
R/W
R/W
R/W
2
0
2
0
2
0
R/W
R/W
R/W
1
0
1
0
1
0
R/W
R/W
R/W
ATmega8(L)
0
0
0
0
0
0
See “Accessing 16-bit
OCR1AH
OCR1BH
OCR1AL
OCR1BL
TCNT1H
TCNT1L
99
Related parts for ATMEGA8-16MU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATMEGA8-16AU](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 32TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PU](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 28DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AC](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AI](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PC](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PI](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MC](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MUR](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
MCU AVR 8KB FLASH 16MHZ 32QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MI](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AJ](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 32-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16MJ](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16PJ](/photos/7/21/72189/453-28-dip_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 28-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA8-16AUR](/photos/6/91/69154/313-32-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 8K 16MHZ 5V 32TQFP
Manufacturer:
Atmel
Datasheet: