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PIC12F508T-E/SN Equivalent & Substitute Parts
Part Overview
The PIC12F508T-E/SN is an 8-bit microcontroller from Microchip Technology's PIC® 12F series, designed for embedded applications requiring compact flash memory and low-pin-count configurations. This device features 768B of FLASH program memory, 25 x 8 bytes of RAM, and operates at 4MHz with an internal oscillator. The part is currently in active production status and maintains full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical packaging allow direct functional replacement in circuit designs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Core Processor | PIC |
| Core Size | 8-Bit |
| Speed | 4MHz |
| Program Memory Size | 768B (512 x 12) |
| Program Memory Type | FLASH |
| RAM Size | 25 x 8 |
| Number of I/O | 5 |
| Voltage Supply (Vcc/Vdd) | 2V ~ 5.5V |
| Oscillator Type | Internal |
| Peripherals | POR, WDT |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the PIC12F508T-E/SN is determined by strict equivalence across the following critical parameters:
Electrical Equivalence Requirements:
- Core processor architecture (PIC)
- Core size (8-Bit)
- Operating speed (4MHz)
- Program memory capacity (768B FLASH)
- RAM capacity (25 x 8)
- I/O pin count (5)
- Supply voltage range (2V ~ 5.5V)
- Peripheral set (POR, WDT)
- Oscillator configuration (Internal)
Mechanical Equivalence Requirements:
- Package type (8-SOIC)
- Physical dimensions (0.154", 3.90mm Width)
- Mounting technology (Surface Mount)
Compliance Requirements:
- RoHS3 compliance status
- Moisture sensitivity level (MSL 1)
The PIC12F508T-I/SN meets all electrical and mechanical equivalence criteria and is classified as a direct substitute.
Parameter Comparison
| Parameter | PIC12F508T-E/SN (Main) | PIC12F508T-I/SN (Substitute) |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Series | PIC® 12F | PIC® 12F |
| Core Processor | PIC | PIC |
| Core Size | 8-Bit | 8-Bit |
| Speed | 4MHz | 4MHz |
| Program Memory Size | 768B (512 x 12) | 768B (512 x 12) |
| Program Memory Type | FLASH | FLASH |
| RAM Size | 25 x 8 | 25 x 8 |
| Number of I/O | 5 | 5 |
| Voltage Supply (Vcc/Vdd) | 2V ~ 5.5V | 2V ~ 5.5V |
| Oscillator Type | Internal | Internal |
| Peripherals | POR, WDT | POR, WDT |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active |
Engineering Selection Recommendations
The PIC12F508T-I/SN is a direct functional equivalent to the PIC12F508T-E/SN. Both devices share identical electrical specifications, memory configurations, I/O architecture, and physical packaging. Both maintain active production status and full RoHS3 compliance with MSL 1 rating.
The primary distinction between these parts is the operating temperature range: the main part (PIC12F508T-E/SN) operates across -40°C to 125°C, while the substitute (PIC12F508T-I/SN) operates across -40°C to 85°C. Selection between these parts depends on the specific thermal requirements of the target application. For applications operating within the -40°C to 85°C range, either part is suitable. For applications requiring operation above 85°C, the PIC12F508T-E/SN is the appropriate choice.
Frequently Asked Questions (FAQ)
Q: Can PIC12F508T-I/SN replace PIC12F508T-E/SN in all applications?
A: The PIC12F508T-I/SN is electrically and mechanically equivalent to the PIC12F508T-E/SN for applications operating within the -40°C to 85°C temperature range. Applications requiring operation above 85°C must use the PIC12F508T-E/SN.
Q: Are the pin configurations identical between these parts?
A: Yes. Both parts use the 8-SOIC package with identical pinout, I/O configuration (5 pins), and electrical characteristics. Direct socket substitution is possible within temperature specifications.
Q: Do both parts have the same memory configuration?
A: Yes. Both devices feature 768B FLASH program memory (512 x 12), 25 x 8 bytes of RAM, and identical peripheral sets (POR, WDT).
Q: What is the significance of the temperature range difference?
A: The operating temperature range defines the maximum ambient temperature at which the device maintains specified electrical performance. The PIC12F508T-E/SN supports extended temperature operation to 125°C, while the PIC12F508T-I/SN is rated to 85°C. Selection depends on application thermal environment.
Q: Are both parts RoHS3 compliant?
A: Yes. Both the PIC12F508T-E/SN and PIC12F508T-I/SN are ROHS3 compliant with MSL 1 rating and REACH unaffected status.
Q: What packaging options are available?
A: Both parts are supplied in 8-SOIC surface mount packages with 0.154" width (3.90mm). The PIC12F508T-I/SN is available in Cut Tape (CT) and Digi-Reel® packaging options.
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