Key facts
- Brand
- Atmel
- Model
- 89S51
- Category
- microcontrollers
- Industry
- Electronics
- Documents
- 2
- Languages
- ZH · EN
- Last added
- 2023-03-30
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ATMEL 89S51 ISP Experiment Board User Manual
The document is a user guide for the ATMEL 89S51 experiment board designed for beginners. It serves as a development tool that helps users learn microcontroller basics by allowing them to connect external devices like a 7290 digital keyboard control board and use a universal board area. This manual is written in Chinese.
Read onlineATMEL 89S51 specifications
| Flash Memory | 4 KB |
|---|---|
| Internal RAM | 128 bytes (8‑bit) |
| Programmable I/O Lines | 32 |
| Timer/Counters | Two 16‑bit |
| UART | Full‑duplex serial channel |
| Operating Voltage | 4.0 V to 5.5 V |
| Maximum Clock Frequency | 33 MHz |
| Watchdog Timer | Present |
| Low‑Power Modes | Idle and Power‑down |
All ATMEL 89S51 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the purpose of this experiment board?
It is designed as a tool for beginners to learn and master basic microcontroller knowledge.
Can I add or remove external devices on the board?
Yes, it has a universal board area that allows users to freely add or subtract peripherals according to their needs.
What is the flash memory size of the AT89S51?
The AT89S51 contains 4 KB of in‑system programmable flash memory.
How many programmable I/O pins does the AT89S51 provide?
It provides 32 programmable I/O lines.