This document introduces the features and characteristics of STM32F103C8T6, which uses the ARM7TDMI® ARM® Thumb® processor core with a high-performance 32-bit RISC architecture and a high-density 16-bit instruction set, and is the leader in MIPS/Watt.
The AT91M42800A is a 32‑bit microcontroller from Atmel’s AT91 family, built around an ARM7TDMI® core with Thumb® support. It offers a high‑density 16‑bit instruction set, low power consumption, and a rich set of peripherals including timers, USARTs, SPI interfaces, and a programmable external bus.
The document provides detailed feature tables, pin‑out diagrams for both LQFP‑144 and BGA‑144 packages, pin descriptions, block diagrams, register listings, packaging information, and errata notes for developers and system designers.
| Processor Core | ARM7TDMI® ARM® Thumb® |
|---|---|
| Internal SRAM | 8 KB |
| Maximum External Address Space | 64 MB |
| Chip Selects | Up to 8 |
| External Data Bus Width | 8/16‑bit (software programmable) |
| Programmable I/O Lines | 54 |
| Timer/Counter Channels | 6 channels, 16‑bit |
| USARTs | 2 |
| SPI Interfaces | 2 Master/Slave |
| System Timers | 3 (PIT, RTT, WDT) |
| Operating Voltage (Core/PLL) | 2.7 V to 3.6 V |
| Operating Voltage (I/O) | 2.7 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C |
| Package Options | 144‑lead LQFP (green) and 144‑ball BGA (RoHS compliant) |
It uses the ARM7TDMI® ARM® Thumb® processor core.
The device includes 8 KB of internal SRAM.
The external bus can address up to 64 MB of memory.
It is offered in a 144‑lead LQFP package (green) and a 144‑ball BGA package that is RoHS compliant.