
32-bit SAMD21 Cortex-M0+
Uno: 8-bit ATmega328PU
Uno WiFi: 8-bit ATmega4809
8-bit ATmega4809
32-bit Nordic nRF52840
Cortex-M4F
32-bit STM32H747XI dual-core
Cortex-M7+M4
8-bit ATmega32u4
32-bit Cortex-M0
8-bit ATmega32u4
8-bit ATmega32u4
8-bit ATmega32u4
32-bit ESP32-Pico
32-bit ESP32
32-bit nRF52832
256KB flash, 32KB RAM
Uno: 32KB flash, 2KB RAM
Uno WiFi: 32KB flash, 6KB RAM
48KB flash, 6KB RAM
1MB flash, 256KB RAM
2MB/16MB Int/Ext flash,
1MB/8MB Int/Ext RAM
32KB flash, microSD
16KB RAM
32KB flash
1MB RAM, 2MB flash,
SD card slot
32KB flash
520KB SRAM, 448KB ROM
520KB RAM, 4MB flash
512KB flash, 64KB RAM
8–15
14–20
14–22
14–22
15–22
11–20
11–20
11–20
20
5
8
16 (1 Grove)
12–30
1–6
1–5/6
8
8
1–6 ...