ATmega808/809/1608/1609
ATmega808/809/1608/1609 Data Sheet
Introduction
The ATmega808/809/1608/1609 microcontrollers are part of the megaAVR
®
0-series, which uses the AVR
®
processor with hardware multiplier running at up to 20 MHz, and offers a wide range of Flash sizes up to 48 KB,
up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, 40-, or 48-pin packages. 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 in this data sheet offer 8 or 16 KB in a 28/32/48-pin package.
megaAVR
®
0-series Overview
The figure below shows the megaAVR
®
0-series devices, laying out pin count variants and memory sizes:
•
•
Vertical migration is possible without code modification, as these devices are fully pin and feature compatible
Horizontal migration to the left reduces the pin count and, therefore, the available features
Figure 1. megaAVR
®
0-series Overview
Devices described in this data sheet
Devices described in other data sheets
Flash
48 KB
ATmega4808
ATmega4808
ATmega4809
ATmega4809
32 KB
ATmega3208
ATmega3208
ATmega3209
16 KB
ATmega1608
ATmega1608
ATmega1609
8 KB
ATmega808
28
ATmega808
32
40
ATmega809
48
Pins
Devices with different Flash memory sizes typically also have different SRAM and EEPROM.
The name of a device in the megaAVR 0-series is decoded as follows:
©
2021 Microchip Technology Inc.
Complete Datasheet
DS40002172C-page 1
ATmega808/809/1608/1609
Figure 2. megaAVR
®
Device Designations
ATmega4809 - MFR - VAO
AVR® product family
Flash size in KB
Series name
Pin count
9 = 48 pins (PDIP: 40 pins)
8 = 32 pins (SSOP: 28 pins)
Variant Suffix
VAO = Automotive
Blank = Industrial
Carrier Type
R = Tape & Reel
Blank = Tube or Tray
Temperature Range
F = -40°C to +125°C (extended)
U = -40°C to +85°C (industrial)
Package Type
A = TQFP
M = VQFN
P = PDIP
X = SSOP
Memory Overview
Table 1. Memory Overview
Memory Type
Flash
SRAM
EEPROM
User row
ATmega808,
ATmega809
8 KB
1 KB
256B
32B
ATmega1608,
ATmega1609
16 KB
2 KB
256B
32B
ATmega3208,
ATmega3209
32 KB
4 KB
256B
64B
ATmega4808,
ATmega4809
48 KB
6 KB
256B
64B
Peripheral Overview
Table 2. Peripheral Overview
Feature
ATmega808
ATmega1608
ATmega3208
ATmega4808
28
20
1
3
-
1
ATmega808
ATmega1608
ATmega3208
ATmega4808
32
20
1
3
-
1
ATmega4809
ATmega809
ATmega1609
ATmega3209
ATmega4809
48
20
1
4
-
1
Pins
Max. frequency
(MHz)
16-bit Timer/Counter
type A (TCA)
16-bit Timer/Counter
type B (TCB)
12-bit Timer/Counter
type D (TCD)
Real-Time Counter
(RTC)
40
20
1
4
-
1
©
2021 Microchip Technology Inc.
Complete Datasheet
DS40002172C-page 2
ATmega808/809/1608/1609
...........continued
Feature
ATmega808
ATmega1608
ATmega3208
ATmega4808
28
3
1
1
(1)
1 (8)
-
1 (4p/3n)
-
ATmega808
ATmega1608
ATmega3208
ATmega4808
32
3
1
1
(1)
1 (12)
-
1 (4p/3n)
-
ATmega4809
ATmega809
ATmega1609
ATmega3209
ATmega4809
48
4
1
1
(1)
1 (16)
-
1 (4p/3n)
-
Pins
USART
SPI
TWI (I
2
C)
ADC (channels)
DAC (outputs)
AC (inputs)
Peripheral Touch
Controller (PTC)
(self-cap/mutual cap
channels)
Custom Logic (LUTs)
Window Watchdog
Event System
channels
General purpose I/O
PORT
40
4
1
1
(1)
1 (16)
-
1 (4p/3n)
-
1 (4)
1
6
23
PA[0:7], PC[0:3],
PD[0:7], PF[0,1,6]
6
1
1
1 (4)
1
6
27
PA[0:7], PC[0:3],
PD[0:7], PF[0:6]
7
1
1
1 (4)
1
8
33
PA[0:7], PC[0:5],
PD[0:7], PE[0:3],
PF[0:6]
8
1
1
1 (4)
1
8
41
PA[0:7], PB[0:5],
PC[0:7], PD[0:7],
PE[0:3], PF[0:6]
10
1
1
Asynchronous
external interrupts
CRCSCAN
Unified Program
and Debug Interface
(UPDI) activated by
dedicated pin
1.
TWI can operate as host and client at the same time on different pins.
©
2021 Microchip Technology Inc.
Complete Datasheet
DS40002172C-page 3
ATmega808/809/1608/1609
Features
•
AVR
®
CPU:
– Single-cycle I/O access
– Two-level interrupt controller
– Two-cycle hardware multiplier
Memories:
– 8 or 16 KB In-system self-programmable Flash memory
– 256B EEPROM
– 2 KB SRAM
– Write/Erase endurance:
• Flash 10,000 cycles
• EEPROM 100,000 cycles
– Data retention: 40 years at 55°C
System:
– Power-on Reset (POR) circuit
– Brown-out Detector (BOD)
– Clock options:
• 16/20 MHz low-power internal oscillator
• 32.768 kHz Ultra Low-Power (ULP) internal oscillator
• 32.768 kHz external crystal oscillator
• External clock input
– Single-pin Unified Program Debug Interface (UPDI)
– Three sleep modes:
• Idle with all peripherals running for immediate wake-up
• Standby
– Configurable operation of selected peripherals
– SleepWalking peripherals
• Power-Down with limited wake-up functionality
Peripherals:
– One 16-bit Timer/Counter type A (TCA) with a dedicated period register and three compare channels
– Up to four 16-bit Timer/Counters type B (TCB) with input capture
– One 16-bit Real-Time Counter (RTC) running from an external crystal or an internal RC oscillator
– Up to four USARTs with fractional baud rate generator, auto-baud, and start-of-frame detection
– Host/client Serial Peripheral Interface (SPI)
– Host/client TWI with dual address match
• Can operate simultaneously as host and client
• Standard mode (Sm, 100 kHz)
• Fast mode (Fm, 400 kHz)
• Fast mode plus (Fm+, 1 MHz)
– Event System for core independent and predictable inter-peripheral signaling
– Configurable Custom Logic (CCL) with up to four programmable Look-up Tables (LUT)
– One Analog Comparator (AC) with a scalable reference input
– One 10-bit 150 ksps Analog-to-Digital Converter (ADC)
– Five selectable internal voltage references: 0.55V, 1.1V, 1.5V, 2.5V, and 4.3V
– CRC code memory scan hardware
• Optional automatic CRC scan before code execution is allowed
– Watchdog Timer (WDT) with Window mode, with a separate on-chip oscillator
– External interrupt on all general purpose pins
•
•
•
©
2021 Microchip Technology Inc.
Complete Datasheet
DS40002172C-page 4
ATmega808/809/1608/1609
•
I/O and Packages:
– Up to 41 programmable I/O lines
– 28-pin SSOP
– 32-pin VQFN 5x5 and TQFP 7x7
– 48-pin VQFN 6x6 and TQFP 7x7
Temperature Ranges:
– Industrial: -40°C to +85°C
– Extended: -40°C to +125°C
Speed Grades -40°C to +105°C:
– 0-5 MHz @ 1.8V – 5.5V
– 0-10 MHz @ 2.7V – 5.5V
– 0-20 MHz @ 4.5V – 5.5V
Speed Grades +105°C to +125°C:
– 0-8 MHz @ 2.7V - 5.5V
– 0-16 MHz @ 4.5V - 5.5V
Speed Grades -40°C to +125°C - Automotive Range Parts (-VAO):
– 0-8 MHz @ 2.7V - 5.5V
– 0-16 MHz @ 4.5V - 5.5V
VAO variants available: Designed, manufactured, tested, and qualified per the AEC-Q100 requirements for
automotive applications.
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©
2021 Microchip Technology Inc.
Complete Datasheet
DS40002172C-page 5