ATMEGA48-20MMH Atmel, ATMEGA48-20MMH Datasheet - Page 374

• 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

27 Memory Programming ......................................................................... 284
28 Electrical Characteristics .................................................................... 302
29 Typical Characteristics ........................................................................ 314
vi
26.2Overview ..............................................................................................................268
26.3Application and Boot Loader Flash Sections .......................................................268
26.4Read-While-Write and No Read-While-Write Flash Sections ..............................269
26.5Boot Loader Lock Bits .........................................................................................271
26.6Entering the Boot Loader Program ......................................................................272
26.7Addressing the Flash During Self-Programming .................................................273
26.8Self-Programming the Flash ................................................................................274
26.9Register Description ............................................................................................282
27.1Program And Data Memory Lock Bits .................................................................284
27.2Fuse Bits ..............................................................................................................285
27.3Signature Bytes ...................................................................................................287
27.4Calibration Byte ...................................................................................................287
27.5Page Size ............................................................................................................288
27.6Parallel Programming Parameters, Pin Mapping, and Commands .....................288
27.7Parallel Programming ..........................................................................................290
27.8Serial Downloading ..............................................................................................297
28.1Absolute Maximum Ratings* ...............................................................................302
28.2DC Characteristics ...............................................................................................302
28.3Speed Grades .....................................................................................................304
28.4Clock Characteristics ...........................................................................................305
28.5System and Reset Characteristics ......................................................................306
28.62-wire Serial Interface Characteristics .................................................................307
28.7SPI Timing Characteristics ..................................................................................308
28.8ADC Characteristics ............................................................................................310
28.9Parallel Programming Characteristics .................................................................311
29.1Active Supply Current ..........................................................................................314
29.2Idle Supply Current ..............................................................................................317
29.3Supply Current of I/O modules ............................................................................320
29.4Power-Down Supply Current ...............................................................................322
29.5Power-Save Supply Current ................................................................................323
29.6Standby Supply Current ......................................................................................323
29.7Pin Pull-up ...........................................................................................................324
ATmega48/88/168
2545S–AVR–07/10