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Renesas Electronics HD4074418S — Discrete Semiconductors
Renesas Electronics

HD4074418S 4-bit OTPROM MCU, 9 MHz

MPNHD4074418S
End of Life

HD4074418S, 4-bit OTPROM microcontroller, 9 MHz, Bulk package.

$15.44Ref. price · indicative, final on quote
HD4074418S datasheet
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Specifications

HD4074418S Technical Specifications
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Product details

4-bit OTPROM MCU at 9 MHz – what it means for the BOM

The HD4074418S is a 4-bit microcontroller with on-chip OTPROM, clocked at 9 MHz. The OTPROM means the program memory is written once during manufacturing – no field firmware updates, no in-system reprogramming. That suits high-volume, fixed-function embedded control where the code is locked before the build. Common in appliance controllers, remote transmitters, and dedicated interface modules where the algorithm never changes after production release.

Lifecycle – Active, but OTP demands careful planning

The HD4074418S carries an Active lifecycle status. For a one-time-programmable part, that matters: you want to be sure the mask ROM or OTP image is locked well before the build window.

Frequently asked questions

What does OTPROM mean for programming?

OTPROM (one-time programmable read-only memory) means the program code is written once during device manufacturing and cannot be erased or rewritten. The firmware must be final and fully tested before the OTP programming step. No field updates are possible.