SIM3C136-B-GQR Equivalent & Substitute Parts

Part Overview

The SIM3C136-B-GQR is a 32-bit ARM Cortex-M3 microcontroller manufactured by Silicon Labs, featuring 32KB FLASH memory and operating at 80MHz. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs, production continuity, and long-term system support. The SIM3C1xx series is no longer in active production, requiring engineers to evaluate compatible alternatives that maintain functional equivalence within acceptable parameter tolerances.

Substiute Parts

SIM3C136-B-GQR

Silicon LabsIn Stock: 1060SIM3C136-B-GQR Datasheet

Current PartRFQ

NUC230SC2AE

Nuvoton Technology CorporationIn Stock: 1114NUC230SC2AE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SIM3C136-B-GQR is evaluated based on the following critical parameters:

• Memory Configuration: Program memory (32KB FLASH) and RAM (8K x 8) must match or exceed the original specification
• Core Architecture: 32-bit single-core processor with equivalent instruction set compatibility
• I/O Count: Minimum 49 I/O pins to support existing circuit designs
• Package Footprint: 64-pin QFP family packages (TQFP or LQFP) with compatible pinout mapping
• Voltage Supply Range: Operating voltage window must encompass or overlap the original 1.8V ~ 3.6V range
• Connectivity Interfaces: I2C, SPI, UART/USART, and SmartCard support required for protocol compatibility
• Peripheral Set: DMA, PWM, WDT, and Brown-out Detect/Reset functionality must be present

The NUC230SC2AE qualifies as a substitute based on matching memory size, I/O count, package family, and core connectivity requirements, despite differences in core processor architecture (Cortex-M0 vs. Cortex-M3) and voltage supply range.

Parameter Comparison

Engineering Selection Recommendations

The NUC230SC2AE is suitable as a substitute for the SIM3C136-B-GQR in applications where the following conditions are met:

Compatibility Factors:

• The design operates within the overlapping voltage supply range of 2.5V ~ 3.6V
• The application can accommodate a 72MHz clock speed instead of 80MHz
• The circuit board layout can be redesigned to accommodate the 64-LQFP (7x7) package footprint, which differs from the original 64-TQFP (10x10)
• The loss of one I/O pin (49 vs. 50) does not impact the application's functional requirements

Compliance Advantages:

• NUC230SC2AE is an active product with ongoing manufacturer support and availability
• RoHS3 compliance and REACH unaffected status provide regulatory alignment for new designs
• Extended operating temperature range (-40°C ~ 105°C) offers broader environmental tolerance

Limitations:

• Core processor architecture differs (ARM Cortex-M0 vs. Cortex-M3), requiring verification of instruction set compatibility and software recompilation
• Package footprint change necessitates PCB redesign
• Voltage supply range minimum is higher (2.5V vs. 1.8V), restricting low-voltage applications

Frequently Asked Questions (FAQ)

Q: Can the NUC230SC2AE directly replace the SIM3C136-B-GQR without PCB modifications?

A: No. The NUC230SC2AE uses a 64-LQFP (7x7) package, while the SIM3C136-B-GQR uses a 64-TQFP (10x10) package. Although both are 64-pin QFP devices, the physical footprints differ, requiring PCB redesign and layout changes.

Q: Are there software compatibility concerns between these two microcontrollers?

A: Yes. The SIM3C136-B-GQR uses an ARM Cortex-M3 core, while the NUC230SC2AE uses an ARM Cortex-M0 core. Although both are ARM-based 32-bit architectures, instruction set differences may exist. Firmware must be recompiled and tested for the target processor. Peripheral register maps and driver implementations may require adjustment.

Q: What is the minimum voltage supply requirement for the NUC230SC2AE?

A: The NUC230SC2AE operates at 2.5V ~ 5.5V, with a minimum of 2.5V. The original SIM3C136-B-GQR supports 1.8V ~ 3.6V. Applications requiring operation below 2.5V cannot use the NUC230SC2AE as a substitute.

Q: Does the NUC230SC2AE have the same number of I/O pins?

A: No. The NUC230SC2AE provides 49 I/O pins, while the SIM3C136-B-GQR provides 50 I/O pins. This single-pin difference may impact designs that utilize all available I/O. Verify that your application can function with one fewer I/O pin.

Q: What is the clock speed difference, and does it affect real-time applications?

A: The NUC230SC2AE operates at 72MHz, compared to the SIM3C136-B-GQR at 80MHz. This represents an 8MHz (10%) reduction in clock speed. Applications with strict timing requirements or high-speed data processing may require performance validation and potential algorithm optimization.

Q: Is the NUC230SC2AE available in production quantities?

A: Yes. The NUC230SC2AE is classified as an active product with 1061 pieces in stock, ensuring availability for production and development. The SIM3C136-B-GQR is obsolete and subject to limited availability.