Key facts
- Brand
- Atmel
- Model
- AT89S8253
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
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Atmel AT89S8253 8-bit Microcontroller Handbook
The AT89S8253 is a low‑power, high‑performance 8‑bit CMOS microcontroller with 12 KB ISP Flash, 2 KB EEPROM, 256 B RAM and 32 programmable I/O lines. It operates from 2.7 V to 5.5 V and can run at frequencies up to 24 MHz. The device includes three 16‑bit timers, a full‑duplex UART, and a four‑level interrupt controller.
The handbook covers the device description, pin configurations for PDIP, TQFP and PLCC packages, detailed port and pin functions, the on‑chip Special Function Register map, and the auxiliary, clock, SPI and interrupt registers. Package dimensions and Atmel contact information are also provided.
Atmel AT89S8253 specifications
| Flash program memory | 12 KB ISP Flash |
|---|---|
| EEPROM data memory | 2 KB EEPROM |
| Internal RAM | 256 × 8‑bit |
| Programmable I/O lines | 32 |
| Timer/Counters | Three 16‑bit |
| Operating voltage range | 2.7 V to 5.5 V |
| Maximum CPU frequency | 24 MHz |
| Package option | 42‑pin PDIP |
All Atmel AT89S8253 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the size of the flash memory in the AT89S8253?
The AT89S8253 provides 12 KB of In‑System Programmable flash memory.
How many programmable I/O lines does the AT89S8253 have?
It has 32 programmable I/O lines.
What is the flash memory capacity of the AT89S8253?
The device contains 12 KB of in‑system programmable flash memory.
How many programmable I/O lines does the AT89S8253 have?
It provides 32 programmable I/O lines.