ATSAM3S8BA-AU vs ATSAM3S4BA-AU Comparison
Detailed side-by-side comparison of ATSAM3S8BA-AU by Microchip Technology and ATSAM3S4BA-AU by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATSAM3S8BA-AU - Cortex-M3 64MHz 512KB Flash MCU | Microchip
ATSAM3S8BA-AU ✓ ActiveMicrochip Technology
ATSAM3S4BA-AU - 64MHz Cortex-M3 MCU 256KB Flash | Microchip (Tape & Reel)
ATSAM3S4BA-AU ✓ ActiveSpecification Comparison
| Parameter | ATSAM3S8BA-AU | ATSAM3S4BA-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Processor | ARM Cortex-M3 revision 2.0 | ARM Cortex-M3 (32-bit RISC) |
| Core Size | 32-bit | 32-bit |
| Maximum Clock Speed | 64 MHz | — |
| Program Memory Size | 512KB (512K x 8) | 256KB (256K x 8) Flash |
| Program Memory Type | FLASH | — |
| SRAM Size | [DATA_NEEDED: SRAM size] | — |
| Supply Voltage | 1.8 V / 2.5 V / 3.3 V | — |
| Number of I/O | 47 | — |
| Connectivity | I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB | HSMCI, I2C, I2S, IrDA, SPI, SSC, TWI, UART, USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT | — |
| MPU | Yes (Memory Protection Unit) | — |
| Instruction Set | Thumb-2 | — |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) |
| Mounting Style | SMD (Surface Mount) | — |
| Packaging | Tray | — |
| Family Compatibility | Pin-to-pin compatible with AT91SAM7S series | — |
| Touch Support | Native Atmel QTouch capacitive touch | — |
| RoHS Status | Compliant (LQFP, Grn, MRL per Mouser) | Compliant (RoHS/Green per distributor listings) |
| Maximum Clock Frequency | — | 64 MHz |
| RAM Size | — | 49KB SRAM |
| Supply Voltage Range | — | 1.62 V to 3.6 V |
| Supply Voltage (Typical) | — | 1.8 V / 3.3 V |
| DMA | — | Yes (peripheral DMA controller) |
| Mounting Type | — | Surface Mount |
| Pin Count | — | 64 |
| Operating Temperature | — | [DATA_NEEDED: operating temperature range] |
| Series | — | SAM3S (SAM3S4B) |
| Pin Compatibility | — | Pin-to-pin compatible with SAM3N4B and SAM7S64 |
| MSL Level | — | [DATA_NEEDED: moisture sensitivity level] |
| ECCN / HTS | — | [DATA_NEEDED: ECCN] |