The AT89S8253 is another member of the MCS-51 microcontroller family from Microchip Technology. It builds upon the foundation of the AT89S5x series (like the AT89S51 and AT89S52) with some significant enhancements:
Increased Flash Memory: The AT89S8253 typically offers 12 KB of Flash memory, providing more storage space for complex programs compared to the 4KB or 8KB of the AT89S5x series.
More Capable Peripherals: It boasts a wider range of on-chip peripherals, including:
More I/O lines: Typically 32 or 40 programmable I/O lines for better device interaction.
Additional Timers/Counters: Often featuring three 16-bit timers/counters for more precise timing and control.
Enhanced Analog Capabilities: Some versions may include an Analog-to-Digital Converter (ADC) for converting analog signals (like voltage) into digital data.
Serial Communication Interface: It likely includes a Serial Peripheral Interface (SPI) for communication with other devices.
Here's a table for a quick comparison:
Feature
AT89S51/AT89S52
AT89S8253
Flash Memory
4 KB or 8 KB
12 KB
RAM
128 bytes
Varies
I/O Lines
32
32 or 40
Timers/Counters
2 (16-bit)
3 (16-bit)
In-System Programming
Yes
Yes
Watchdog Timer
Basic
May vary
Power-Down Mode
Varies
Varies
Additional Peripherals
Limited
More extensive
Applications:
The AT89S8253's increased memory and capabilities make it suitable for a wider range of embedded system applications compared to the AT89S5x series. Here are some examples:
Data acquisition systems: The ADC allows for reading analog sensor data.
Motor control: Timers and I/O lines can be used to control motors.
Complex control systems: More memory and peripherals enable handling intricate tasks.
Resources:
Microchip Technology product page (might be limited as the AT89S8253 is an older model): You can try searching using the part number.
Datasheet: Search online using keywords like "AT89S8253 datasheet" to find the datasheet from various sources.
Development Board Information: Search for "AT89S8253 development board" to find boards for experimenting with this microcontroller. Availability might be lower compared to the AT89S5x series due to it being an older model.
Remember, the specific features and functionalities of the AT89S8253 can vary depending on the exact model number. Always consult the datasheet for the specific variant you're considering.