MCL908QT2CDWE Equivalent & Substitute Parts

Part Overview

The MCL908QT2CDWE is an 8-bit microcontroller from NXP USA Inc. belonging to the HC08 series. This device features 1.5KB of FLASH program memory, 128 bytes of RAM, and operates at 2MHz with a supply voltage range of 2.4V to 3.6V. The part is mounted in an 8-SO package and includes integrated peripherals such as Low Voltage Detection (LVD), Power-On Reset (POR), and Pulse Width Modulation (PWM) capability with 4 channels of 8-bit analog-to-digital conversion.

The MCL908QT2CDWE is classified as obsolete. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

MCL908QT2CDWE

NXP USA Inc.In Stock: 1136MCL908QT2CDWE Datasheet

Current PartRFQ

MC9RS08KA2CSC

NXP USA Inc.In Stock: 2546MC9RS08KA2CSC Datasheet

MFR RecommendedRFQ

MC9S08QG4CDNE

NXP USA Inc.In Stock: 1090MC9S08QG4CDNE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCL908QT2CDWE is determined by the following critical parameters: core processor architecture, core size (8-bit), package type (8-SOIC), operating temperature range (-40°C ~ 85°C), supply voltage compatibility, and compliance certifications (ROHS3, REACH Unaffected).

The two substitute parts identified are both NXP microcontrollers in 8-SOIC packages with 8-bit architecture and matching operating temperature ranges. Both maintain ROHS3 compliance and REACH Unaffected status. However, each substitute introduces functional enhancements including increased program memory, higher clock speeds, and expanded peripheral capabilities. These enhancements position them as forward-compatible alternatives suitable for legacy system redesigns or upgrades.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full compliance with ROHS3 and REACH Unaffected requirements, matching the environmental and regulatory status of the original MCL908QT2CDWE.

The MC9RS08KA2CSC is an active product from the RS08 series. It provides increased program memory (2KB versus 1.5KB) and higher clock speed (10MHz versus 2MHz) while maintaining a narrower supply voltage range (1.8V ~ 5.5V). The package footprint is reduced (0.154" versus 0.209" width). This part is suitable for applications requiring enhanced performance within the specified voltage envelope.

The MC9S08QG4CDNE is an active product from the S08 series. It offers the highest program memory capacity (4KB), fastest clock speed (20MHz), and largest RAM allocation (256 x 8 bytes). It includes expanded connectivity options (I2C, SCI, SPI) and enhanced analog conversion (A/D 4x10b). The supply voltage range is 1.8V ~ 3.6V. This part is appropriate for applications demanding maximum computational capability and peripheral integration.

Frequently Asked Questions (FAQ)

Q: Can the MC9RS08KA2CSC or MC9S08QG4CDNE be used as direct pin-for-pin replacements for the MCL908QT2CDWE?

A: Both substitute parts use the 8-SOIC package format, but physical dimensions differ. The MCL908QT2CDWE uses an 8-SOIC package with 0.209" width, while both substitutes use 8-SOIC packages with 0.154" width. PCB layout and footprint verification is required before implementation.

Q: What are the key differences in memory configuration between these parts?

A: The MCL908QT2CDWE provides 1.5KB program memory and 128 bytes RAM. The MC9RS08KA2CSC provides 2KB program memory and 63 bytes RAM. The MC9S08QG4CDNE provides 4KB program memory and 256 bytes RAM. Applications with larger code or data requirements benefit from the increased memory in the substitute parts.

Q: Are there supply voltage compatibility considerations?

A: The MCL908QT2CDWE operates at 2.4V ~ 3.6V. The MC9RS08KA2CSC supports 1.8V ~ 5.5V, offering broader voltage tolerance. The MC9S08QG4CDNE supports 1.8V ~ 3.6V. Existing power supply designs may require adjustment if substituting with the MC9RS08KA2CSC in systems currently operating below 2.4V or above 3.6V.

Q: How do the I/O pin counts compare?

A: The MCL908QT2CDWE provides 5 I/O pins, while both substitute parts provide 4 I/O pins. Applications requiring all 5 I/O connections must evaluate whether the reduced pin count is acceptable or if alternative solutions are necessary.

Q: What peripheral differences exist between these microcontrollers?

A: The MCL908QT2CDWE includes LVD, POR, and PWM. The MC9RS08KA2CSC includes LVD, POR, and WDT (Watchdog Timer). The MC9S08QG4CDNE includes LVD, POR, PWM, and WDT, plus I2C, SCI, and SPI connectivity. Applications dependent on specific peripherals must confirm availability in the selected substitute.

Q: What is the significance of the different clock speeds?

A: The MCL908QT2CDWE operates at 2MHz, the MC9RS08KA2CSC at 10MHz, and the MC9S08QG4CDNE at 20MHz. Higher clock speeds enable faster instruction execution and improved real-time responsiveness. Applications with timing-critical operations may benefit from the increased speed of the substitute parts.