Key facts
- Brand
- Intel
- Model
- 8XC251SA
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-04
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Intel 8XC251SA/SB/SP/SQ Microcontroller Datasheet
The 8XC251SA/SB/SP/SQ family is a high‑performance CHMOS 8‑bit microcontroller compatible with MCS‑51 instruction set and pin‑compatible with 40‑pin PDIP and 44‑pin PLCC sockets. It offers a 40‑byte register file, linear addressing, and expanded external memory space up to 256 KB.
Key features include selectable on‑chip RAM (1 KB or 512 B), ROM/OTPROM/EPROM options (8 KB, 16 KB, or none), 32 programmable I/O lines, three 16‑bit timers/counters, a hardware watchdog timer, and a programmable serial I/O port. The device is available in PDIP, PLCC, and ceramic DIP packages and operates from 0 to 16 MHz with a 5 V ±10 % supply.
Intel 8XC251SA specifications
| Device Speed | 0 - 16 MHz; 5 V ±10 % |
|---|---|
| On‑chip RAM | 1 KB (SA/SB) or 512 B (SP/SQ) |
| On‑chip ROM/OTPROM/EPROM | 8 KB (SA/SP), 16 KB (SB/SQ), or none |
| Programmable I/O Lines | 32 |
| Interrupt Sources | Seven maskable with four priority levels |
| Timer/Counters | Three flexible 16‑bit |
| Watchdog Timer | Hardware |
| Package Options | PDIP, PLCC, Ceramic DIP |
All Intel 8XC251SA documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How many programmable I/O lines does the 8XC251 family provide?
It provides 32 programmable I/O lines.
What package types are offered for the 8XC251SA/SB/SP/SQ microcontroller?
The microcontroller is available in 44‑pin PLCC, 40‑pin PDIP, and 40‑pin ceramic DIP packages.
What is the maximum external clock frequency for the 8XC251 microcontroller?
The device supports up to a 16 MHz external clock frequency.
From: Intel 8XC251SA/SB/SP/SQ High-Performance CHMOS Microcontroller Datasheet
How many programmable I/O lines does the 8XC251 provide?
It provides 32 programmable I/O lines.
From: Intel 8XC251SA/SB/SP/SQ High-Performance CHMOS Microcontroller Datasheet