Datasheet Microchip ATMEGA4808 — 数据表

ATmega3208/4808 – 28-pin
Data Sheet
megaAVRВ® 0-series
Introduction
В® В® The ATmega3208/3209/4808/4809 microcontrollers of the megaAVR 0-series are using the AVR
processor with hardware multiplier, running at up to 20 MHz, with a wide range of Flash sizes up to 48
KB, up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, or 48-pin package. The series uses the
latest technologies from Microchip with a flexible and low-power architecture including Event System and
SleepWalking, accurate analog features and advanced peripherals.
The devices described here offer Flash sizes from 32 KB to 48 KB in a 28-pin package. Features В® AVR CPU
– Single-cycle I/O access
– Two-level interrupt controller
– Two-cycle hardware multiplier
Memories
– Up to 48 KB In-system self-programmable Flash memory
– 256B EEPROM
– Up to 6 KB SRAM
– Write/Erase endurance: Flash 10,000 cycles EEPROM 100,000 cycles
– Data retention: 20 Years at 85°C
System
– Power-on Reset (POR) circuit
– Brown-out Detection (BOD)
– – …

ATmega3208/4808 – 32-pin
Data Sheet
megaAVRВ® 0-series
Introduction
В® В® The ATmega3208/3209/4808/4809 microcontrollers of the megaAVR 0-series are using the AVR
processor with hardware multiplier, running at up to 20 MHz, with a wide range of Flash sizes up to 48
KB, up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, or 48-pin package. The series uses the
latest technologies from Microchip with a flexible and low-power architecture including Event System and
SleepWalking, accurate analog features and advanced peripherals.
The devices described here offer Flash sizes from 32 KB to 48 KB in a 32-pin package. Features В® AVR CPU
– Single-cycle I/O access
– Two-level interrupt controller
– Two-cycle hardware multiplier
Memories
– Up to 48 KB In-system self-programmable Flash memory
– 256B EEPROM
– Up to 6 KB SRAM
– Write/Erase endurance: Flash 10,000 cycles EEPROM 100,000 cycles
– Data retention: 20 Years at 85°C
System
– Power-on Reset (POR) circuit
– Brown-out Detection (BOD)
– – …

megaAVR® 0-Series
Manual
Introduction
® ® The ATmega3208/3209/4808/4809 microcontrollers of the megaAVR 0-series are using the AVR
processor with hardware multiplier, running at up to 20 MHz, with a wide range of Flash sizes up to 48
KB, up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, or 48-pin package. The series uses the
latest technologies from Microchip with a flexible and low-power architecture including Event System and
SleepWalking, accurate analog features and advanced peripherals.
This Manual contains the general descriptions of the peripherals. While the available peripherals have
identical features and show the same behavior across the series, packages with fewer pins support a
subset of signals. Refer to the Data Sheet of the individual device for available pins and signals. Features
• • • ® AVR CPU
- Single-cycle I/O access
- Two-level interrupt controller
- Two-cycle hardware multiplier
Memories
- Up to 48 KB In-system self-programmable Flash memory
- 256B EEPROM
- Up to 6 KB SRAM
- Write/Erase endurance:
• Flash 10,000 cycles
• EEPROM 100,000 cycles
- Data retention: 20 Years at 85°C …