ATMEGA103L-4AI Atmel, ATMEGA103L-4AI Datasheet - Page 48
ATMEGA103L-4AI
Manufacturer Part Number
ATMEGA103L-4AI
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-4AI
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
-40°C ~ 85°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
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ATmega103(L)
Figure 33. Timer/Counter1 Block Diagram
Timer/Counter1 can also be used as an 8-, 9- or 10-bit Pulse Width Modulator. In this
mode the counter and the OCR1A/OCR1B Registers serve as a dual glitch-free stand-
alone PWM with centered pulses. Refer to page 53 for a detailed description of this
function.
The Input Capture function of Timer/Counter1 provides a capture of the Timer/Counter1
contents to the Input Capture Register (ICR1), triggered by an external event on the
Input Capture pin – PD4/(IC1). The actual capture event settings are defined by the
Timer/Counter1 Control Register (TCCR1B). In addition, the Analog Comparator can be
set to trigger the Input Capture. Refer to “Analog Comparator” on page 75 for details on
this. The ICP pin logic is shown in Figure 34.
Figure 34. ICP Pin Schematic Diagram
15
15
15
15
TIMER/COUNTER1 OUTPUT COMPARE REGISTER A
REGISTER (TIMSK)
TIMER INT. MASK
T/C1 INPUT CAPTURE REGISTER (ICR1)
T/C1 OVER-
FLOW IRQ
TIMER/COUNTER1 (TCNT1)
16-BIT COMPARATOR
8
8
8
8
T/C1 COMPARE
7
7
7
7
MATCHA IRQ
REGISTER (TIFR)
TIMER INT. FLAG
CAPTURE
TRIGGER
T/C1 COMPARE
MATCHB IRQ
0
0
0
0
REGISTER A (TCCR1A)
15
15
TIMER/COUNTER1 OUTPUT COMPARE REGISTER B
T/C CLEAR
T/C CLOCK SOURCE
UP/DOWN
CAPTURE IRQ
T/C1 CONTROL
T/C1 INPUT
16-BIT COMPARATOR
CONTROL
8
8
LOGIC
7
7
REGISTER B (TCCR1B)
T/C1 CONTROL
0945I–AVR–02/07
0
0
CK
T1
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