SPC5643LFF0MLQ1R Equivalent & Substitute Parts

Part Overview

The SPC5643LFF0MLQ1R is a 32-bit dual-core embedded microcontroller from NXP USA Inc., part of the MPC56xx Qorivva series. This device integrates an e200z4 processor core operating at 120MHz with 1MB of FLASH program memory and 128KB of RAM, housed in a 144-LQFP package. The part supports multiple communication protocols including CANbus, FlexRay, LINbus, SPI, and UART/USART, with integrated peripherals such as DMA, PWM, and watchdog timer functionality.

The SPC5643LFF0MLQ1R is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support long-term product maintenance where original components are no longer manufactured or stocked.

Key Parameters

Parameter	Value
Manufacturer	NXP USA Inc.
Core Processor	e200z4
Core Size	32-Bit Dual-Core
Speed	120MHz
Program Memory Size	1MB (1M x 8)
Program Memory Type	FLASH
RAM Size	128K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V
Data Converters	A/D 32x12b
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	144-LQFP (20x20)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SPC5643LFF0MLQ1R is determined by the following critical parameters:

Core Compatibility Parameters:

Package type: 144-LQFP (20x20) form factor
Program memory capacity: 1MB FLASH minimum
RAM capacity: 128KB minimum
Processor architecture: e200z4 or e200z4d core
Operating speed: 120MHz
Data converter capability: A/D 32x12b

Electrical Compatibility Parameters:

Supply voltage range must encompass or be compatible with 3V ~ 5.5V
Operating temperature range: -40°C ~ 125°C preferred for full compatibility

Regulatory & Compliance Parameters:

RoHS3 compliance
MSL rating: 3 (168 Hours)
REACH unaffected status

Substitute parts are grouped into two categories:

Category 1: Direct Functional Equivalents (SPC56xL Series - Dual-Core) Parts SPC56EL60L5BBFQR, SPC56EL60L5BBFQY, SPC56EL60L5CBFQR, SPC56EL60L5CBFQY, SPC56EL60L5CBFSR, and SPC56EL60L5CBOSY maintain the dual-core architecture with identical memory configuration and package. These are manufactured by STMicroelectronics and carry automotive-grade qualification (AEC-Q100).

Category 2: Manufacturer-Recommended Alternatives (SPC56xL Series - Single-Core & Enhanced Memory) Parts SPC564L60L5BCOQR, SPC564L70L5BBOSR, and SPC564L70L5BBOSY are manufacturer-recommended alternatives that transition to single-core architecture with enhanced memory options (1MB or 2MB FLASH). These parts are active products with automotive qualification.

Parameter Comparison

Parameter	SPC5643LFF0MLQ1R (Main)	SPC56EL60L5CBFQY (Direct Equivalent)	SPC564L60L5BCOQR (MFR Recommended)	SPC564L70L5BBOSY (MFR Recommended)
Manufacturer	NXP USA Inc.	STMicroelectronics	STMicroelectronics	STMicroelectronics
Series	MPC56xx Qorivva	SPC56xL	SPC56xL	SPC56xL
Core Processor	e200z4	e200z4d	e200z4d	e200z4d
Core Size	32-Bit Dual-Core	32-Bit Dual-Core	32-Bit Single-Core	32-Bit Single-Core
Speed	120MHz	120MHz	120MHz	120MHz
Program Memory Size	1MB (1M x 8)	1MB (1M x 8)	1MB (1M x 8)	2MB (2M x 8)
RAM Size	128K x 8	128K x 8	128K x 8	192K x 8
Voltage Supply (Vcc/Vdd)	3V ~ 5.5V	3V ~ 3.63V	3V ~ 3.63V	3V ~ 3.63V
Data Converters	A/D 32x12b	A/D 32x12b	A/D 32x12b	A/D 32x12b
Operating Temperature	-40°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Package / Case	144-LQFP (20x20)	144-LQFP (20x20)	144-LQFP (20x20)	144-LQFP (20x20)
Grade	Standard	Automotive	Automotive	Automotive
Qualification	Not specified	AEC-Q100	AEC-Q100	AEC-Q100
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Dual-Core Preservation):

Select from the SPC56EL60L5 series (SPC56EL60L5CBFQY, SPC56EL60L5CBOSY, or SPC56EL60L5CBOSR) when dual-core functionality is required and the design operates within the 3V to 3.63V supply range. These parts maintain identical core architecture, memory configuration, and package footprint. All substitute parts in this category are active products with AEC-Q100 automotive qualification and ROHS3 compliance. The primary design consideration is the reduced supply voltage range (3V ~ 3.63V versus 3V ~ 5.5V on the original part).

For Manufacturer-Recommended Migration (Enhanced Capability):

The SPC564L60L5BCOQR provides a single-core alternative with identical 1MB FLASH and 128KB RAM, suitable for applications where dual-core functionality is not essential. The SPC564L70L5BBOSY offers increased program memory (2MB FLASH) and RAM (192KB), providing headroom for expanded firmware and data storage. Both are active products with AEC-Q100 qualification. These parts transition to single-core architecture and operate within 3V to 3.63V supply range.

Compliance & Availability:

All substitute parts maintain ROHS3 compliance, MSL 3 rating, and REACH unaffected status. The SPC56xL series parts are currently in active production with documented inventory availability, addressing the obsolescence of the original SPC5643LFF0MLQ1R.

Frequently Asked Questions (FAQ)

Q: Can SPC56EL60L5CBFQY directly replace SPC5643LFF0MLQ1R in existing designs?

A: The SPC56EL60L5CBFQY is pin-compatible and functionally equivalent in terms of core architecture, memory capacity, and package. However, the supply voltage range differs: the substitute operates at 3V ~ 3.63V while the original supports 3V ~ 5.5V. Designs operating within the 3V to 3.63V window can use this part as a direct replacement. Designs requiring the full 5.5V upper limit require voltage regulation or alternative selection.

Q: What is the difference between the SPC56EL60L5 and SPC564L60L5 series?

A: The SPC56EL60L5 series maintains dual-core architecture identical to the original part. The SPC564L60L5 series transitions to single-core architecture. Both share the same 1MB FLASH, 128KB RAM, 120MHz speed, and 144-LQFP package. Single-core variants are suitable for applications not requiring multi-core processing capability.

Q: Why do the substitute parts have a lower maximum operating temperature (-40°C ~ 105°C versus -40°C ~ 125°C)?

A: The SPC56xL series substitute parts are specified for -40°C to 105°C operation. Applications requiring operation to 125°C must evaluate thermal management or consider alternative solutions. The SPC56EL60L5CBFQR and SPC56EL60L5CBFSR variants support -40°C to 125°C operation, matching the original part's temperature range.

Q: Are all substitute parts automotive-qualified?

A: Yes. All SPC56xL series substitute parts carry AEC-Q100 automotive qualification and are classified as automotive-grade components. The original SPC5643LFF0MLQ1R does not specify automotive qualification.

Q: What packaging options are available for the substitute parts?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Tray, and standard packaging. Selection depends on assembly process requirements and volume. Inventory availability varies by packaging option and part number variant.

Q: Can I use SPC564L70L5BBOSY (2MB FLASH) as a drop-in replacement?

A: The SPC564L70L5BBOSY is pin-compatible and housed in the same 144-LQFP package. It provides enhanced memory (2MB FLASH, 192KB RAM) compared to the original 1MB FLASH, 128KB RAM configuration. This part is suitable for designs requiring additional program or data storage. The single-core architecture differs from the original dual-core design.

Q: What is the MSL rating and moisture sensitivity consideration?

A: All parts, including the original and substitutes, carry MSL 3 rating with 168-hour floor life. Standard moisture control procedures during storage, handling, and assembly apply. No additional moisture management is required beyond standard IPC guidelines for MSL 3 components.

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