ATMEGA103L-4AC Atmel, ATMEGA103L-4AC Datasheet - Page 42
ATMEGA103L-4AC
Manufacturer Part Number
ATMEGA103L-4AC
Description
IC MCU 128K 4MHZ A/D LV 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA103-6AC.pdf
(141 pages)
2.ATMEGA103-6AC.pdf
(4 pages)
3.ATMEGA103L-4AC.pdf
(4 pages)
Specifications of ATMEGA103L-4AC
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
64-TQFP, 64-VQFP
For Use With
ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 42 of 141
- Download datasheet (3Mb)
Timer/Counter0 – TCNT0
Timer/Counter2 – TCNT2
42
ATmega103(L)
In PWM mode, this bit has no effect.
• Bits 2, 1, 0 – CS02, CS01, CS00/CS22, CS21, CS20: Clock Select Bits 2, 1 and 0
The Clock Select2 bits 2, 1 and 0 define the prescaling source of the Timer/Counter.
Table 11. Timer/Counter0 Prescale Select
Table 12. Timer/Counter2 Prescale Select
The Stop condition provides a Timer Enable/Disable function. The CK down divided
modes are scaled directly from the CK CPU clock. If the external pin modes are used for
Timer/Counter2, transitions on PD7/(T2) will clock the counter even if the pin is config-
ured as an output. This feature can give the user software control of the counting.
Bit
$32 ($42)
Read/Write
Initial Value
Bit
$24 ($44)
Read/Write
Initial Value
CS02
CS22
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CS01
CS21
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MSB
MSB
R/W
R/W
7
0
7
0
CS00
CS20
R/W
R/W
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
6
0
6
0
Description
Timer/Counter0 is stopped.
PCK0
PCK0/8
PCK0/32
PCK0/64
PCK0/128
PCK0/256
PCK0/1024
Description
Timer/Counter2 is stopped.
CK
CK/8
CK/64
CK/256
CK/1024
External Pin PD7(T2), falling edge
External Pin PD7(T2), rising edge
R/W
R/W
5
0
5
0
R/W
R/W
4
0
4
0
R/W
R/W
3
0
3
0
R/W
R/W
2
0
2
0
R/W
R/W
1
0
1
0
LSB
R/W
LSB
R/W
0
0
0
0
0945I–AVR–02/07
TCNT0
TCNT2
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