Renesas M38223E4FP

Overview

M38223E4FP from Renesas Electronics is an 8-bit CMOS single-chip microcomputer in the 3822 Group (740 Family / 38000 Series), featuring on-chip mask ROM, 128 bytes RAM, 16-bit timer X/Y, 8-bit A/D converter with 8 channels, LCD drive control circuit, and serial I/O. It operates at up to 8 MHz in high-speed mode and targets embedded control in consumer appliances and industrial equipment.

For engineers reviewing the M38223E4FP datasheet, M38223E4FP pinout, M38223E4FP application, or M38223E4FP equivalent, key selection criteria include its 48-pin SDIP package, built-in LCD driver supporting up to 4×28 segments, 8-channel 8-bit ADC with sample-and-hold, and support for stop/wait low-power modes with wake-up via INT or key input interrupt.

Technical Context

The M38223E4FP implements the 740 CPU core with 16-bit address space, supports single-chip mode using internal oscillator (XIN–XOUT) or external crystal (XCIN–XCOUT), and integrates a programmable clock divider selecting f(XIN)/2, f(XIN)/4, or f(XIN)/8. Its reset circuit includes power-on reset and external RESET pin assertion.

Peripheral integration includes two 16-bit timers (X and Y) with capture/compare functions, three 8-bit timers (1–3) with PWM capability, full-duplex serial I/O supporting UART and clock-synchronous modes, and an LCD drive control circuit with selectable bias (1/2 or 1/3) and duty (1/4 or 1/8).

Key Specifications

Pinout & Package

Package: 48-pin SDIP (Shrink Dual In-line Package), 0.6 inch width, 2.54 mm pitch - suitable for through-hole prototyping and legacy PCB assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with M38223E8FP (larger ROM) and UPD78F0503GC-GAD-AX (flash-based, feature-rich), the M38223E4FP delivers optimized cost and power efficiency for fixed-function, high-volume applications where 16 KB ROM and mask-programmed security are sufficient.

Availability

M38223E4FP is available at Aetrix Electronics and suitable for home appliance control, industrial panel meters, remote control units, and thermostat interfaces requiring stable component supply across long production lifecycles.

Supply support for M38223E4FP 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 global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The 3822 Group belongs to Renesas' legacy 740-family 8-bit microcontroller line, designed specifically for cost-sensitive, low-power embedded control in consumer electronics and industrial human-interface applications.

FAQ

What is the maximum operating frequency of the M38223E4FP?

The M38223E4FP supports a maximum main clock frequency of 8 MHz when configured in high-speed mode (f(XIN)/2) with an 8 MHz crystal on XIN–XOUT. Its internal CPU execution speed scales directly with this clock, delivering up to 8 million instruction cycles per second under optimal conditions. The device also supports middle-speed (f(XIN)/4) and low-speed (f(XIN)/8) modes for power optimization. All timing specifications in the 3822 Group User's Manual assume operation within the 4.5–5.5 V supply range.

Does the M38223E4FP include an internal oscillator circuit?

Yes, the M38223E4FP includes a fully integrated oscillator circuit supporting both external crystal/resonator connections (XIN–XOUT for high/middle-speed modes; XCIN–XCOUT for low-speed mode) and internal feedback configuration. No external capacitors are required for basic operation, though load capacitors may be added per crystal manufacturer recommendations. The oscillator stabilizes within 1024 φ cycles after power-on, and the CPU remains halted until oscillation is confirmed.

Can the M38223E4FP drive a 4×28-segment LCD directly?

Yes, the M38223E4FP's built-in LCD drive control circuit supports static and multiplexed LCD panels up to 4 commons and 28 segments (4×28). It provides programmable bias (1/2 or 1/3) and duty (1/4 or 1/8) settings, along with dedicated COM0–COM3 and SEG0–SEG27 outputs (shared with P0/P2 pins). This eliminates the need for external LCD driver ICs in applications such as microwave ovens and panel meters.

What low-power modes does the M38223E4FP support?

The M38223E4FP supports two hardware-controlled low-power states: Stop mode (CPU and peripheral clocks halted; current ≤10 µA) and Wait mode (CPU halted but peripheral clocks active; current ≤1 mA). Both modes can be exited via external interrupt (INT0–INT7), key input (K0–K7), or timer overflow. Wake-up latency is ≤6 φ cycles from Stop mode and immediate from Wait mode, making it suitable for battery-powered remote controls and sensor nodes.

Is the M38223E4FP RoHS compliant?

Yes, the M38223E4FP complies with the EU RoHS Directive (2011/65/EU) as confirmed by Renesas Electronics' environmental compliance documentation. It contains lead-free terminations and meets maximum concentration limits for cadmium, hexavalent chromium, mercury, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE). Full material declarations and test reports are available upon request from Renesas or authorized distributors.