This document introduces the features and characteristics of the LPC2101 MCU
The AT91M55800A is a member of Atmel's AT91 16/32‑bit microcontroller family based on the ARM7TDMI® ARM® Thumb® processor core. It offers a high‑performance 32‑bit RISC architecture, low power consumption, and a rich set of peripherals including SRAM, external bus interface, timers, ADC/DAC, USARTs, SPI, and power‑management features.
The handbook details pin configurations for both 176‑lead LQFP and 176‑ball BGA packages, pin descriptions, ordering information, and revision history, making it a comprehensive reference for designers and engineers working with this microcontroller.
| Processor Core | ARM7TDMI® ARM® Thumb® |
|---|---|
| Internal SRAM | 8K Bytes |
| Maximum External Address Space | 128M Bytes |
| Chip Selects (External Bus Interface) | 8 |
| Programmable I/O Lines | 58 |
| Timer/Counter | 6‑channel 16‑bit |
| USARTs | 3 |
| ADC | 8‑channel 10‑bit |
| DAC | 2‑channel 10‑bit |
| Core Operating Voltage Range | 2.7 V to 3.6 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Options | 176‑lead LQFP (Green) or 176‑ball BGA (RoHS‑compliant) |
It uses the ARM7TDMI® ARM® Thumb® Processor Core.
The device provides 8 K Bytes of internal SRAM.
The external bus interface supports up to 128 M Bytes of address space.
It operates from –40 °C to +85 °C.