ATMEGA48-20MMH Atmel, ATMEGA48-20MMH Datasheet - Page 32

• Manufacturer Part Number: ATMEGA48-20MMH
• Description: MCU AVR 4KB FLASH 20MHZ 28QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48-20MMH

• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: ATMEGA48x
• Core: AVR8
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 16 MHz
• Operating Supply Voltage: 2.7 V to 5.5 V
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.15
9.16
9.17
2545SS–AVR–07/10
Rev. 2545E-02/05
Rev. 2545D-07/04
Rev. 2545C-04/04
3.
4.
5.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
1.
2.
3.
4.
Table notes in
Updated instructions used with WDTCSR in relevant code examples.
Updated cross-reference in
Updated
Updated
Updated
MLF-package alternative changed to “Quad Flat No-Lead/Micro Lead Frame Package
QFN/MLF”.
Updated
Updated
Updated
Updated
305and
Added
Updated
Updated
266.
Updated
Updated
Updated
Updated
Updated
and
Updated
Moved “TIMSK2 – Timer/Counter2 Interrupt Mask Register” on page17.11.6 and
“TIFR2 – Timer/Counter2 Interrupt Flag Register” on page17.11.7 to
“Register Description” on page
Updated equation in
Added
Updated
Updated Ordering Information for
Updated
Updated equation in
Speed Grades changed: 12MHz to 10MHz and 24MHz to 20MHz
Updated
Updated
Table 26-11 on page
“Pin Change Interrupt Timing” on page 65
“Page Size” on page
Table 27-16 on page 299
Section 27.8.3 “Serial Programming Instruction set” on page
Section 34. “Errata” on page
“EECR – The EEPROM Control Register” on page
“Calibrated Internal RC Oscillator” on page
“External Clock” on page
“8-bit Timer/Counter Block Diagram” on page
“Enter Programming Mode” on page
“DC Characteristics” on page
“Ordering Information” on page
“Errata ATmega88” on page 360
“System Clock Prescaler” on page
“Serial Programming Algorithm” on page
“Errata ATmega88” on page 360
“Speed Grades” on page
“Ordering Information” on page
“Errata ATmega88” on page
“SPMCSR – Store Program Memory Control and Status Register” on page
Table 8-5 on page
Table 28-3 on page
Section 28.2 “DC Characteristics” on page 302
“Bit Rate Generator Unit” on page
“Bit Rate Generator Unit” on page
282.
“Electrical Interconnection” on page
288.
30,
152.
306,
Table 28-4 on page
“ATmega168” on page
34.
304.
Table 28-6 on page
360.
357.
302.
349.
349.
and
and
35.
290.
“Errata ATmega168” on page
“Errata ATmega168” on page
298.
ATmega48/88/168
32.
306,
89.
215.
215.
351.
308,
Table 26-9 on page
21.
updated.
Table 28-2 on page
209.
299.
361.
361.
281,
32