Renesas M34519E8FP#U0

Overview

M34519E8FP#U0 from Renesas Electronics is a 4-bit single-chip CMOS microcomputer with One Time PROM (8192 × 10 bits), 384 × 4-bit RAM, 10-bit 8-channel A/D converter, four 8-bit timers (including PWM-capable Timer 4), and serial I/O. It operates from 2.5 V to 5.5 V and supports ceramic resonator, quartz crystal, RC, and on-chip oscillator clock sources - used in consumer appliance control systems requiring low-power mixed-signal integration.

For engineers reviewing the M34519E8FP#U0 datasheet, M34519E8FP#U0 pinout, M34519E8FP#U0 application, or M34519E8FP#U0 equivalent, key selection considerations include its OTP memory configuration, 42-pin SSOP package, 10-key-on wakeup capability, voltage drop detection circuit (reset at ~3.5 V), and dual-function pins such as D6/CNTR0 and D7/CNTR1 for event counting and PWM output.

Technical Context

The M34519E8FP#U0 implements the 4500-series CPU core with a minimum instruction execution time of 0.5 µs at 6 MHz (XIN through-mode) and supports eight interrupt sources - including two external (INT0/INT1), four timer-based, one A/D, and one serial I/O. Its clock system allows dynamic selection among XIN-derived frequencies (÷1, ÷2, ÷4, ÷8) and on-chip RING oscillator modes via the MR register.

It integrates analog and digital peripherals on a single die: an 8-channel 10-bit successive-approximation A/D converter with dedicated analog input pins (AIN0–AIN7 mapped to P60–P63 and P40–P43), LED drive capability via Port D, and configurable N-channel open-drain or CMOS output structures across multiple ports - enabling direct interface with switches, sensors, and indicators without external level-shifting.

Key Specifications

Pinout & Package

Package: 42-pin plastic molded SSOP (42P2R-A), 0.65 mm lead pitch, body size 12.8 × 7.6 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-bit microcontroller applications.

Compared with M34519M8FP#U0, the M34519E8FP#U0 offers field-programmable firmware at the cost of one-time write limitation; versus uPD78F0503GC-FAA-AX, it delivers lower gate count, smaller footprint, and simpler toolchain - making it optimal for cost-constrained, functionally fixed appliance subsystems.

Availability

M34519E8FP#U0 is available at Aetrix Electronics and suitable for washing machine control units, smart thermostat sensor interfaces, office printer paper jam detectors, and LED lighting dimmer modules requiring stable component supply across extended production lifecycles.

Supply support for M34519E8FP#U0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and consumer markets.

The 4519 Group - including M34519E8FP#U0 - was designed for cost-sensitive, low-power embedded control in household appliances and office automation equipment, emphasizing integrated A/D, timer flexibility, and minimal external component count.

FAQ

What is the memory configuration of the M34519E8FP#U0?

The M34519E8FP#U0 features 8192 words × 10-bit One Time PROM for program storage and 384 words × 4-bit RAM for data. Unlike mask ROM variants, this OTP configuration allows programming during manufacturing but cannot be erased or rewritten - making it ideal for fixed-function applications where firmware stability is critical and field updates are unnecessary. The M34519E8FP#U0 uses this memory map to execute control algorithms directly from PROM with deterministic timing.

Does the M34519E8FP#U0 support external crystal oscillation?

Yes, the M34519E8FP#U0 supports external quartz crystal oscillation via the XIN and XOUT pins, specifically at 32 kHz. The device includes an internal feedback resistor between these pins, eliminating the need for an external resistor in crystal mode. This capability enables precise real-time clock functionality in applications such as thermostat scheduling or washing machine cycle timing - and is fully documented in the REJ03B0007-0301 datasheet for the M34519E8FP#U0.

How many analog input channels does the M34519E8FP#U0 provide?

The M34519E8FP#U0 provides eight analog input channels (AIN0–AIN7) implemented as a 10-bit successive-approximation A/D converter. Channels AIN0–AIN3 map to port pins P60–P63, and AIN4–AIN7 map to P40–P43 - all share bidirectional I/O functionality. This configuration allows flexible use: analog sensing when needed, or digital I/O otherwise - a key advantage in space-constrained designs like compact appliance control boards using the M34519E8FP#U0.

Can the M34519E8FP#U0 generate PWM signals?

Yes, the M34519E8FP#U0 generates hardware PWM via Timer 4, with the output routed to the CNTR1 pin (shared with D7). This PWM signal supports variable duty cycle and frequency control - enabling direct drive of LEDs, small DC motors, or solenoids without external driver ICs. The M34519E8FP#U0's Timer 4 implementation includes dual reload registers, allowing seamless waveform updates during operation - critical for flicker-free dimming or smooth motor acceleration.

What is the purpose of the CNVSS pin on the M34519E8FP#U0?

The CNVSS pin on the M34519E8FP#U0 enables or disables the internal voltage drop detection circuit: applying "H" level activates the circuit (triggering reset at ~3.5 V), while "L" level disables it. This pin must be tied to VSS (0 V) to ensure proper operation - per the REJ03B0007-0301 datasheet, failure to do so may cause unpredictable reset behavior. The CNVSS control gives designers flexibility to disable brown-out detection in systems with highly regulated supplies, optimizing the M34519E8FP#U0's reliability across diverse power architectures.