Datasheet
2
11090BS–ATARM–22-Oct-13
SAM3S8/SD8 Summary
1. Description
The Atmel SAM3S8/SD8 series is a member of a family of Flash microcontrollers based on the
high performance 32-bit ARM Cortex-M3 RISC processor. It operates at a maximum speed of
64 MHz and features up to 512 Kbytes of Flash (dual plane on SAM3SD8) and up to 64 Kbytes
of SRAM. The peripheral set includes a Full Speed USB Device port with embedded transceiver,
a High Speed MCI for SDIO/SD/MMC, an External Bus Interface featuring a Static Memory Con-
troller providing connection to SRAM, PSRAM, NOR Flash, LCD Module and NAND Flash, 2(3)x
USARTs, (3 on SAM3SD8C) 2x UARTs, 2x TWIs, 3x SPI, an I2S, as well as 1 PWM timer, 6x
general-purpose 16-bit timers (with stepper motor and quadrature decoder logic support), an
RTC, a 12-bit ADC, a 12-bit DAC and an analog comparator.
The SAM3S8/SD8 series is ready for capacitive touch thanks to the QTouch
®
library, offering an
easy way to implement buttons, wheels and sliders.
The SAM3S8/SD8 device is a medium range general purpose microcontroller with the best ratio
in terms of reduced power consumption, processing power and peripheral set. This enables the
SAM3S8/SD8 to sustain a wide range of applications including consumer, industrial control, and
PC peripherals.
It operates from 1.62V to 3.6V and is available in 64- and 100-pin QFP, 64-pin QFN, and 100-pin
BGA packages.
The SAM3S8/SD8 series is the ideal migration path from the SAM7S series for applications that
require more performance. The SAM3S8/SD8 series is pin-to-pin compatible with the SAM7S
series.
1.1 Configuration Summary
The SAM3S8/SD8 series devices differ in memory size, package and features. Table 1-1 sum-
marizes the configurations of the device family.
Notes: 1. Full Modem support on USART1.
2. One channel is reserved for internal temperature sensor.
Table 1-1. Configuration Summary
Feature SAM3S8B SAM3S8C SAM3SD8B SAM3SD8C
Flash 512 Kbytes 512 Kbytes 512 Kbytes 512 Kbytes
SRAM 64 Kbytes 64 Kbytes 64 Kbytes 64 Kbytes
Package
LQFP64
QFN64
LQFP100
BGA100
LQFP64
QFN64
LQFP100
BGA100
Number of PIOs 47 79 47 79
12-bit ADC 11 channels
(2)
16 channels
(2)
11 channels
(2)
16 channels
(2)
12-bit DAC 2 channels 2 channels 2 channels 2 channels
Timer Counter
Channels
666 6
PDC Channels 22 22 24 24
USART/UART 2/2
(1)
2/2
(1)
2/2
(1)
3/2
(1)
HSMCI 1 port/4 bits 1 port/4 bits 1 port/4 bits 1 port/4 bits
External Bus
Interface
-
8-bit data,
4 chip selects,
24-bit address
-
8-bit data,
4 chip selects,
24-bit address