RFPIC12F675FT-I/SS

Overview

The rfPIC12F675FT-I/SS is a 20-pin SSOP RF microcontroller integrating an 8-bit RISC CPU with a UHF ASK/FSK transmitter. It features 1024 x 14 words of FLASH program memory, 128 bytes of EEPROM, and 64 bytes of SRAM. The device operates on a 2.0V to 5.5V supply with a maximum clock frequency of 20 MHz. Key peripherals include a 10-bit 4-channel ADC, analog comparator, two timers, and interrupt capabilities. The integrated transmitter supports frequencies from 380 MHz to 450 MHz with output power adjustable in steps from +10 dBm to -12 dBm.

Feature Summary

• Integrated UHF ASK/FSK Transmitter: Supports data rates up to 40 Kbps with output power ranging from +10 dBm to -12 dBm across four steps.
• High-Performance RISC CPU: Features 35 single-cycle instructions (except branches), an 8-level hardware stack, and direct/indirect addressing modes.
• Memory Architecture: Includes 1024 x 14 words of Flash program memory, 128 x 8 bytes of Data EEPROM, and 64 x 8 bytes of SRAM.
• Analog Peripherals: Equipped with a 10-bit Analog-to-Digital Converter (4 channels) and an analog comparator with 16 internal reference levels.

Applications

• Automotive Remote Keyless Entry (RKE) systems
• Tire pressure sensors
• Wireless sensors
• Low power telemetry
• Meter reading

Procurement Notes

Verify the 'FT' suffix indicates tape and reel packaging when sourcing. Confirm the 'I' designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure the specific frequency band variant matches the application requirements, as this part number corresponds to the F series (380-450 MHz).

Selection Notes

Select this component for applications requiring short-range wireless transmission within the 380-450 MHz band. It is suitable for designs needing low power consumption during transmission and sleep modes. Consider the 20-pin SSOP package constraints and the need for external crystal components for the RF section when designing the PCB layout.

Part Context

This device belongs to the rfPIC12F675 family, which includes variants for different frequency bands: K (290-350 MHz), F (380-450 MHz), and H (850-930 MHz). The 'FT' suffix typically denotes tape and reel packaging, while 'I' specifies the industrial temperature grade. The base architecture remains consistent across these variants.

Replacement Considerations

Direct replacements must match the 380-450 MHz frequency range and 20-pin SSOP package. Other members of the rfPIC12F675 family (e.g., rfPIC12F675K or rfPIC12F675H) are pin-compatible but operate at different frequencies. Standard PIC12F675 devices lack the integrated RF transmitter.