DSPIC33FJ128GP310AT-I/PF Equivalent & Substitute Parts

Part Overview

The DSPIC33FJ128GP310AT-I/PF is a 16-bit dsPIC microcontroller from Microchip Technology's dsPIC™ 33F series, designed for embedded applications requiring digital signal processing capabilities. This device features 128KB of FLASH program memory, 16KB of RAM, and operates at 40 MIPs with a 100-pin TQFP package. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Series	dsPIC™ 33F
Core Processor	dsPIC
Core Size	16-Bit
Speed	40 MIPs
Program Memory Size	128KB (128K x 8)
Program Memory Type	FLASH
RAM Size	16K x 8
Number of I/O	85
Voltage Supply (Vcc/Vdd)	3V ~ 3.6V
Data Converters	A/D 32x10b/12b
Connectivity	I2C, IrDA, LINbus, SPI, UART/USART
Peripherals	AC'97, Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	100-TQFP (14x14)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the DSPIC33FJ128GP310AT-I/PF is determined by strict equivalence across the following critical parameters:

Core Architecture: dsPIC 16-bit processor
Processing Speed: 40 MIPs
Memory Configuration: 128KB FLASH program memory and 16KB RAM
I/O Count: 85 I/O pins
Peripheral Set: Identical connectivity (I2C, IrDA, LINbus, SPI, UART/USART) and peripherals (AC'97, Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT)
Voltage Supply Range: 3V ~ 3.6V
Data Conversion: A/D 32x10b/12b
Package Format: 100-TQFP (14x14) surface mount
Temperature Range: -40°C ~ 85°C
Compliance: ROHS3 Compliant, REACH Unaffected

The DSPIC33FJ128GP310A-I/PF meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Parameter	DSPIC33FJ128GP310AT-I/PF	DSPIC33FJ128GP310A-I/PF
Manufacturer	Microchip Technology	Microchip Technology
Series	dsPIC™ 33F	dsPIC™ 33F
Core Processor	dsPIC	dsPIC
Core Size	16-Bit	16-Bit
Speed	40 MIPs	40 MIPs
Program Memory Size	128KB (128K x 8)	128KB (128K x 8)
RAM Size	16K x 8	16K x 8
Number of I/O	85	85
Voltage Supply (Vcc/Vdd)	3V ~ 3.6V	3V ~ 3.6V
Data Converters	A/D 32x10b/12b	A/D 32x10b/12b
Connectivity	I2C, IrDA, LINbus, SPI, UART/USART	I2C, IrDA, LINbus, SPI, UART/USART
Peripherals	AC'97, Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT	AC'97, Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	100-TQFP (14x14)	100-TQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The DSPIC33FJ128GP310A-I/PF is the qualified substitute for the obsolete DSPIC33FJ128GP310AT-I/PF. Both parts maintain identical electrical specifications, memory configuration, peripheral functionality, and package format. The substitute part carries Active product status, ensuring continued availability and manufacturing support from Microchip Technology.

Both parts comply with ROHS3 requirements and REACH regulations, with matching Moisture Sensitivity Level (MSL) ratings of 3 (168 Hours). The substitute part is supplied in Tray packaging, whereas the original part does not specify packaging type. This difference does not affect functional compatibility or electrical performance.

Selection of the DSPIC33FJ128GP310A-I/PF is appropriate for applications currently using or designed around the DSPIC33FJ128GP310AT-I/PF, with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Are the DSPIC33FJ128GP310AT-I/PF and DSPIC33FJ128GP310A-I/PF pin-compatible?

A: Yes. Both parts use the 100-TQFP (14x14) package with identical pin assignments, I/O configuration (85 pins), and electrical characteristics. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The DSPIC33FJ128GP310AT-I/PF is classified as obsolete, while the DSPIC33FJ128GP310A-I/PF is active. All functional parameters, memory specifications, and peripheral sets are identical. The substitute part is supplied in Tray packaging.

Q: Can I use the DSPIC33FJ128GP310A-I/PF in existing designs built around the DSPIC33FJ128GP310AT-I/PF?

A: Yes. The substitute part maintains full electrical and functional equivalence. No firmware modifications, PCB redesign, or application software changes are required.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the DSPIC33FJ128GP310AT-I/PF and DSPIC33FJ128GP310A-I/PF are ROHS3 Compliant and REACH Unaffected. Both carry identical Moisture Sensitivity Level (MSL) ratings of 3 (168 Hours).

Q: What is the operating temperature range for these microcontrollers?

A: Both parts operate across the temperature range of -40°C to 85°C (TA), suitable for industrial and commercial embedded applications.

Q: Are there any supply voltage differences between these parts?

A: No. Both parts require identical supply voltage of 3V to 3.6V (Vcc/Vdd) and share the same power distribution requirements.

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