ARM7TDMI microcontroller, 32-bit, 1.8 V, 256KB, 55MHz, LQFP-128

Summary

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 packages.

Additional Features

- Microcontroller Features

- Core
- ARM7TDMI® ARM® Thumb® Processor 32-bit RISC Architecture
- High-density 16-bit Instruction Set
- EmbeddedICE™ In-circuit Emulation, Debug Communication Channel Support

- Memories
- 256 Kbytes embedded Flash
- 32 Kbytes embedded SRAM, Single-cycle Access at Maximum Speed
- Memory Controller (MC), External Bus Interface
- Memory Protection Unit

- System
- 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

- Package
- 128-lead LQFP
- 144-ball LFBGA RoHS-compliant Package

- Peripheral Features
- 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)

- Analog Features
- One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os

- Fully Static Operation
- Up to 55 MHz at 1.8V and 85°C Worst Case Conditions
- Up to 48 MHz at 1.65V and 85°C Worst Case Conditions

- Debugger Development Support
- SAM-BA - Interface with SAM-BA Graphic User Interface
- IEEE® 1149.1 JTAG Boundary Scan on All Digital Pins