SIM3L167-C-GQ Equivalent & Substitute Parts

Part Overview

The SIM3L167-C-GQ is a 32-bit ARM Cortex-M3 microcontroller manufactured by Silicon Labs, featuring 256KB FLASH memory and operating at 50MHz. This device is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Finding equivalent or substitute parts is necessary for legacy system maintenance, production continuity, and long-term supply chain planning when original inventory becomes unavailable.

Key Parameters

Parameter	SIM3L167-C-GQ
Manufacturer	Silicon Labs
Core Processor	ARM Cortex-M3
Core Size	32-Bit Single-Core
Speed	50MHz
Program Memory Size	256KB (256K x 8) FLASH
RAM Size	32K x 8
Voltage Supply (Vcc/Vdd)	1.8V ~ 3.8V
Number of I/O	62
Package / Case	80-TQFP (12x12)
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution eligibility for the SIM3L167-C-GQ is determined by the following critical parameters:

Program Memory Size: 256KB FLASH memory is the primary functional requirement
RAM Size: 32K x 8 minimum capacity
Number of I/O: 62 I/O pins required for system integration
Voltage Supply Range: 1.8V ~ 3.8V operating window
Operating Temperature Range: -40°C ~ 85°C (TA)
Connectivity Interfaces: I2C, SPI, UART/USART support
Peripherals: DMA, PWM, WDT, Brown-out Detect/Reset, POR
Mounting Type: Surface Mount
RoHS Compliance: Environmental regulatory requirement

The MSP430F6747IPZ meets the core memory, I/O count, voltage supply, temperature range, connectivity, and peripheral requirements. However, architectural differences exist in core processor type, clock speed, and package form factor that must be evaluated for specific application requirements.

Parameter Comparison

Parameter	SIM3L167-C-GQ	MSP430F6747IPZ	Match Status
Program Memory Size	256KB (256K x 8) FLASH	256KB (256K x 8) FLASH	Match
RAM Size	32K x 8	32K x 8	Match
Number of I/O	62	62	Match
Voltage Supply (Vcc/Vdd)	1.8V ~ 3.8V	1.8V ~ 3.6V	Partial (MSP430F6747IPZ range is narrower)
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	Match
Connectivity	I2C, IrDA, SmartCard, SPI, UART/USART	I2C, IrDA, LINbus, SPI, UART/USART	Partial (different protocol support)
Peripherals	Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT	Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 4x24b Sigma Delta Converter	Superset (MSP430F6747IPZ includes additional converters)
Core Speed	50MHz	25MHz	Difference (MSP430F6747IPZ is 50% slower)
Package / Case	80-TQFP (12x12)	100-LQFP (14x14)	Different (different pin count and footprint)
RoHS Status	RoHS Compliant	ROHS3 Compliant	Match (both compliant)
Product Status	Not For New Designs	Active	Advantage (MSP430F6747IPZ is actively supported)

Engineering Selection Recommendations

The MSP430F6747IPZ is available as an active product from Texas Instruments, providing long-term supply chain stability compared to the SIM3L167-C-GQ, which is classified as Not For New Designs. Both devices meet the core memory, I/O, temperature, and compliance requirements.

Selection of MSP430F6747IPZ requires evaluation of the following factors:

Package Footprint Change: Migration from 80-TQFP (12x12) to 100-LQFP (14x14) necessitates PCB redesign
Clock Speed Reduction: Operating frequency decreases from 50MHz to 25MHz; application timing requirements must be reassessed
Voltage Supply Range: Upper limit reduces from 3.8V to 3.6V; power supply specifications must be verified
Connectivity Differences: SmartCard interface is not available on MSP430F6747IPZ; LINbus is added
Regulatory Compliance: Both devices meet RoHS requirements; MSP430F6747IPZ includes ROHS3 and REACH Unaffected certifications

Frequently Asked Questions (FAQ)

Q: Can MSP430F6747IPZ be used as a direct pin-for-pin replacement?

A: No. The SIM3L167-C-GQ uses an 80-pin TQFP package, while the MSP430F6747IPZ uses a 100-pin LQFP package. PCB redesign is required for physical and electrical integration.

Q: What is the impact of the 25MHz clock speed on MSP430F6747IPZ compared to the 50MHz SIM3L167-C-GQ?

A: The MSP430F6747IPZ operates at half the clock frequency. Applications dependent on timing-critical operations, real-time processing, or high-speed data acquisition must be re-evaluated for performance compatibility.

Q: Are the voltage supply ranges compatible?

A: The SIM3L167-C-GQ supports 1.8V to 3.8V, while the MSP430F6747IPZ supports 1.8V to 3.6V. If your system operates above 3.6V, the MSP430F6747IPZ is not suitable. Within the 1.8V to 3.6V range, both devices are compatible.

Q: What connectivity protocols are lost or gained in substitution?

A: The SIM3L167-C-GQ includes SmartCard interface support, which is not present on MSP430F6747IPZ. The MSP430F6747IPZ adds LINbus connectivity. Verify that your application does not require SmartCard functionality before proceeding with substitution.

Q: Does the MSP430F6747IPZ provide equivalent peripheral functionality?

A: Yes, for standard peripherals. Both devices include DMA, PWM, WDT, Brown-out Detect/Reset, POR, and LCD support. The MSP430F6747IPZ includes additional 4x24-bit Sigma Delta Converters not present in the SIM3L167-C-GQ.

Q: What are the long-term supply implications?

A: The SIM3L167-C-GQ is Not For New Designs, indicating limited future availability. The MSP430F6747IPZ is Active, providing extended supply chain support and long-term availability assurance.

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