ATMEGA48A-PU Atmel, ATMEGA48A-PU Datasheet - Page 155

IC MCU AVR 4K FLASH 28PDIP

ATMEGA48A-PU

Manufacturer Part Number
ATMEGA48A-PU
Description
IC MCU AVR 4K FLASH 28PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA48A-PU

Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Controller Family/series
Atmega
No. Of I/o's
23
Eeprom Memory Size
256Byte
Ram Memory Size
512Byte
Cpu Speed
20MHz
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
8271C–AVR–08/10
Figure 17-9. Timer/Counter Timing Diagram, with Prescaler (f
Figure 17-10
Figure 17-10. Timer/Counter Timing Diagram, Setting of OCF2A, with Prescaler (f
Figure 17-11
Figure 17-11. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with Pres-
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
TCNTn
TCNTn
TCNTn
(clk
(clk
(clk
OCRnx
OCFnx
(CTC)
OCRnx
OCFnx
TOVn
clk
clk
clk
clk
clk
clk
I/O
I/O
I/O
I/O
I/O
I/O
Tn
Tn
Tn
/8)
/8)
/8)
shows the setting of OCF2A in all modes except CTC mode.
shows the setting of OCF2A and the clearing of TCNT2 in CTC mode.
caler (f
OCRnx - 1
clk_I/O
TOP - 1
MAX - 1
/8)
TOP
OCRnx
MAX
OCRnx Value
TOP
BOTTOM
OCRnx + 1
BOTTOM
clk_I/O
/8)
BOTTOM + 1
BOTTOM + 1
OCRnx + 2
clk_I/O
/8)
155

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