ATMEGA161L-4PC Atmel, ATMEGA161L-4PC Datasheet - Page 40
ATMEGA161L-4PC
Manufacturer Part Number
ATMEGA161L-4PC
Description
IC AVR MCU 16K LV 4MHZ COM 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA161-8AC.pdf
(159 pages)
Specifications of ATMEGA161L-4PC
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
35
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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8-bit Timer/Counters
T/C0 and T/C2
40
ATmega161(L)
• Bit 0
When this bit is set (one), the Timer/Counter1 and Timer/Counter0 prescaler will be
reset. The bit will be cleared by hardware after the operation is performed. Writing a
zero to this bit will have no effect. Note that Timer/Counter1 and Timer/Counter0 share
the same prescaler and a reset of this prescaler will affect both timers. This bit will
always be read as zero.
Figure 31 shows the block diagram for Timer/Counter0. Figure 32 shows the block dia-
gram for Timer/Counter2.
Figure 31. Timer/Counter0 Block Diagram
–
PSR10: Prescaler Reset Timer/Counter1 and Timer/Counter0
7
7
7
TIMER/COUNTER0
8-BIT COMPARATOR
OUTPUT COMPARE
REGISTER0 (OCR0)
REGISTER (TIMSK)
TIMER INT. MASK
(TCNT0)
0
0
0
T/C0 OVER-
FLOW IRQ
T/C CLEAR
T/C CLK SOURCE
UP/DOWN
REGISTER (TIFR)
TIMER INT. FLAG
T/C0 COMPARE
MATCH IRQ
REGISTER (TCCR0)
T/C0 CONTROL
CONTROL
LOGIC
SPECIAL FUNCTIONS
IO REGISTER (SFIOR)
1228D–AVR–02/07
CK
T0
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