Microchip's ARM®-based SAM7SE256 is a member of the SAM7SE series of flash microcontrollers based on the 32-bit ARM7TDMI RISC processor.
It operates at a maximum speed of 55MHz and features 256KB of flash memory and 32KB of SRAM. The peripheral set includes an external bus interface (EBI) supporting static memory, ECC-enabled NAND, CompactFlash and SDRAM, UART, two USARTs, TWI (I2C), SPI, SSC, four 16-bit PWM controllers, three 16-bit timers, an RTT and one 8x10-bit ADC.
It achieves single-cycle instruction access from embedded flash at 27 MIPS. The multi-layer bus matrix, multiple SRAM banks, PDC, and DMA support parallel tasks and maximize data throughput.
The SAM7SE256 operates from 1.65V to 3.6V and is available in 144-pin LFBGA and LQFP 128-pin package.
ARM7TDMI® ARM® Thumb® Processor 32-bit RISC Architecture
High-density 16-bit Instruction Set
EmbeddedICE™ In-circuit Emulation, Debug Communication Channel Support
256 Kbytes embedded Flash
32 Kbytes embedded SRAM, Single-cycle Access at Maximum Speed
Memory Controller (MC), External Bus Interface
Memory Protection Unit
Based on Power-on Reset Cells and Low-power Factory-calibrated Brownout Detector
Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and One PLL
Power Management Controller (PMC)
Advanced Interrupt Controller (AIC)
Two-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention
20-bit Programmable Counter plus 12-bit Interval Counter
Windowed Watchdog (WDT)
Real-time Timer (RTT)
Three Parallel Input/Output Controllers (PIO)
Eleven Peripheral DMA Controller (PDC) Channels
Four High-current Drive I/O lines, Up to 16 mA Each
128-lead LQFP Green Package
144-ball LFBGA RoHS-compliant Package
One Synchronous Serial Controller (SSC)
Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)
One Master/Slave Serial Peripheral Interfaces (SPI)
One USB 2.0 Full Speed (12 Mbits per second) Device Port
One Three-channel 16-bit Timer/Counter (TC)
One Four-channel 16-bit PWM Controller (PWMC)
One Two-wire Interface (TWI)
One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os
Fully Static Operation
Debugger Development Support
SAM-BA - Interface with SAM-BA Graphic User Interface
IEEE® 1149.1 JTAG Boundary Scan on All Digital Pins
SAM-ICE is a JTAG emulator designed for SAMA5, SAM3, SAM4, SAM7 and SAM9 ARM® core-based MCUs and MPUs, including Thumb mode. It supports download speeds up to 720K Bytes per second and maximum JTAG speeds up to 12 MHZ. It also supports Serial Wire Debug (SWD) and Serial Wire Viewer (SWV) from SAM-ICE hardware V6.