Key facts
- Brand
- Atmel
- Model
- AT89C2051
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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Atmel AT89C2051 Datasheet
The AT89C2051 microcontroller combines a CMOS 8‑bit CPU with 2 KB of on‑chip Flash memory, 128 bytes of RAM and a range of peripherals such as two 16‑bit timer/counters, a serial UART, an analog comparator and direct LED drive outputs. It operates from 2.7 V to 6 V and can run at frequencies up to 24 MHz, with idle and power‑down modes for low‑power applications.
The document provides pin configurations, special function registers, programming procedures for the Flash memory, timing characteristics, and ordering information for commercial, industrial and automotive package variants.
Atmel AT89C2051 specifications
| Internal RAM | 128 bytes (8‑bit) |
|---|---|
| Programmable I/O lines | 15 |
| Timer/Counters | Two 16‑bit |
| Operating voltage range | 2.7 V to 6 V |
| Maximum CPU frequency | 24 MHz |
| Power modes | Idle and Power‑Down |
| Analog comparator | On‑chip |
| LED drive capability | Direct drive outputs |
Source: Atmel AT89C2051 Datasheet
All Atmel AT89C2051 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating voltage range of the AT89C2051?
The device operates from 2.7 V to 6 V.
How many programmable I/O lines does the AT89C2051 provide?
It provides 15 programmable I/O lines.
What is the operating voltage range of the AT89C2051?
The device operates from 2.7 V to 6 V.
How much flash memory does the AT89C2051 provide?
It includes 2 Kbytes of flash programmable memory.