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PIC16F876T-20I/SO Equivalent & Substitute Parts
Part Overview
The PIC16F876T-20I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, featuring 14KB FLASH program memory, 256 x 8 EEPROM, and 368 x 8 RAM. This device operates at 20MHz with integrated peripherals including I2C, SPI, and UART/USART connectivity, along with Brown-out Detect/Reset, Power-on Reset, PWM, and Watchdog Timer functions. The part is supplied in 28-SOIC surface mount packaging and maintains Active product status with ROHS3 compliance. Equivalent and substitute parts are identified based on matching core functionality, memory architecture, and electrical operating parameters to support design flexibility and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PIC16F876T-20I/SO |
| Manufacturer | Microchip Technology |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Program Memory Size | 14KB (8K x 14) |
| Program Memory Type | FLASH |
| EEPROM Size | 256 x 8 |
| RAM Size | 368 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 5.5V |
| Number of I/O | 22 |
| Data Converters | A/D 5x10b |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Oscillator Type | External |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the PIC16F876T-20I/SO are identified based on the following substitution criteria:
Parametric Equivalent (PIC16F876AT-I/SO): This part maintains identical core specifications including 8-bit architecture, 20MHz speed, 14KB FLASH memory, 256 x 8 EEPROM, 368 x 8 RAM, 22 I/O pins, 5x10-bit A/D converters, external oscillator requirement, and 4V ~ 5.5V supply voltage range. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), which does not affect electrical or functional compatibility. This part is classified as a direct parametric equivalent.
Manufacturer Recommended Substitute (PIC16F886T-I/SO): This part shares the same 8-bit core, 20MHz speed, 14KB FLASH memory, 256 x 8 EEPROM, 368 x 8 RAM, identical package format (28-SOIC), and operating temperature range. Key differences include expanded I/O capability (24 pins versus 22), enhanced A/D converter (11x10b versus 5x10b), internal oscillator support (versus external-only), and extended supply voltage range (2V ~ 5.5V versus 4V ~ 5.5V). This part is classified as a manufacturer-recommended substitute with enhanced peripheral capabilities.
Parameter Comparison
| Parameter | PIC16F876T-20I/SO (Main) | PIC16F876AT-I/SO (Parametric Equivalent) | PIC16F886T-I/SO (MFR Recommended) |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Size | 8-Bit | 8-Bit | 8-Bit |
| Speed | 20MHz | 20MHz | 20MHz |
| Program Memory Size | 14KB (8K x 14) | 14KB (8K x 14) | 14KB (8K x 14) |
| Program Memory Type | FLASH | FLASH | FLASH |
| EEPROM Size | 256 x 8 | 256 x 8 | 256 x 8 |
| RAM Size | 368 x 8 | 368 x 8 | 368 x 8 |
| Number of I/O | 22 | 22 | 24 |
| Data Converters | A/D 5x10b | A/D 5x10b | A/D 11x10b |
| Connectivity | I2C, SPI, UART/USART | I2C, SPI, UART/USART | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Oscillator Type | External | External | Internal |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 5.5V | 4V ~ 5.5V | 2V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
PIC16F876AT-I/SO is selected as the parametric equivalent when direct functional replacement is required with identical electrical specifications. Both parts maintain Active product status, ROHS3 compliance, and MSL Level 1 rating. The packaging format difference (Cut Tape & Digi-Reel® versus Tape & Reel) does not affect circuit-level compatibility or performance characteristics.
PIC16F886T-I/SO is designated as the manufacturer-recommended substitute when design requirements permit utilization of enhanced peripheral capabilities. This part is suitable for applications requiring additional I/O pins (24 versus 22) or expanded analog conversion channels (11x10b versus 5x10b). The internal oscillator support and extended supply voltage range (2V ~ 5.5V) provide additional design flexibility. All three parts maintain identical Active product status and ROHS3 compliance certification.
Frequently Asked Questions (FAQ)
Q: Can PIC16F876AT-I/SO be used as a direct replacement for PIC16F876T-20I/SO?
A: Yes. PIC16F876AT-I/SO is a parametric equivalent with identical electrical specifications, memory configuration, I/O count, and operating parameters. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), which does not affect functional compatibility.
Q: What are the key differences between PIC16F886T-I/SO and the main part?
A: PIC16F886T-I/SO provides enhanced capabilities: 24 I/O pins (versus 22), 11x10-bit A/D converters (versus 5x10-bit), internal oscillator support (versus external-only requirement), and extended supply voltage range (2V ~ 5.5V versus 4V ~ 5.5V). Core memory, speed, and temperature specifications remain identical.
Q: Is PIC16F886T-I/SO backward compatible with designs using PIC16F876T-20I/SO?
A: PIC16F886T-I/SO is functionally compatible for applications utilizing the core 22 I/O pins and 5 A/D channels of the original design. The additional 2 I/O pins and 6 A/D channels are available for expanded functionality but are not required for basic compatibility.
Q: Are all three parts certified for the same environmental and compliance standards?
A: Yes. All three parts maintain Active product status, ROHS3 compliance, MSL Level 1 rating, and identical operating temperature range (-40°C ~ 85°C).
Q: What packaging options are available for these parts?
A: All three parts are supplied in 28-SOIC surface mount packaging (0.295", 7.50mm Width). PIC16F876T-20I/SO is available in Tape & Reel format, while PIC16F876AT-I/SO and PIC16F886T-I/SO are available in Cut Tape & Digi-Reel® format.
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