Renesas SLG46881V

Overview

SLG46881V from Renesas Electronics is a programmable mixed-signal matrix IC featuring an asynchronous state machine (ASM), dual-supply operation (VDD: 2.5–5 V; VDD2: 1–1.8 V), twelve combination function macrocells, two high-speed and two low-power rail-to-rail analog comparators, and integrated I²C interface. It enables configurable logic, timing, sensing, and signal conditioning in ultra-low-power portable electronics.

For engineers reviewing the SLG46881V datasheet, SLG46881V pinout, SLG46881V application, or SLG46881V equivalent, key selection criteria include its 1 V–1.8 V VDD2 supply range, ultra-low-power digital input capability, 32-pin STQFN package, and support for both hardware-based ASM and software-configurable LUT/DFF/CNT/DLY functions.

Technical Context

The SLG46881V implements a fault-tolerant Zero Static Power Asynchronous State Machine with twelve states, enabling deterministic real-time response without clock domain constraints. Its dual-supply architecture isolates core logic (VDD2) from I/O and analog blocks (VDD), supporting mixed-voltage system integration.

It integrates four independent 8-bit counter/delay macrocells plus one 16-bit CNT/DLY or 4-bit LUT, all programmable via one-time NVM. The device includes dedicated f(1) computation macrocell with ACMP coupling, crystal oscillator support, and analog temperature sensor - all operating across –40 °C to +85 °C.

Key Specifications

Pinout & Package

SLG46881V is housed in a 32-pin STQFN package (4 mm × 4 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are fully defined in Renesas datasheet sections 2.1 and 5.x, distinguishing GPI/GPO/IO configurations per VDD or VDD2 domain and supporting I²C mode, crystal input, and latch-enabled inputs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal logic applications.

Compared with SLG46880V and SLG46537V, the SLG46881V uniquely supports sub-1.8 V logic domains, integrates fault-tolerant ASM for complex state handling, and delivers full mixed-signal configurability in a single chip - making it optimal for next-generation portable and battery-constrained systems requiring hardware autonomy.

Availability

SLG46881V is available at Aetrix Electronics and suitable for fitness bands, smartphone power management, USB-C adapters, and industrial handheld scanners requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for SLG46881V 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of analog and mixed-signal design heritage.

The GreenPAK family - including SLG46881V - was designed to replace discrete analog and digital glue logic with field-programmable, ultra-low-power mixed-signal ICs targeting space- and energy-constrained portable and wearable electronics.

FAQ

What is the minimum VDD2 supply voltage supported by SLG46881V?

The SLG46881V supports a VDD2 supply range of 1 V (±5 %) to 1.8 V (±10 %). This allows direct interfacing with 1.2 V or 1.5 V logic domains without level shifters. Operation below 0.95 V is not guaranteed per datasheet Section 3.3, and startup behavior may be unstable outside this window. The SLG46881V leverages this low-voltage capability to achieve ultra-low-power digital input operation - a feature absent in SLG46880V.

Does SLG46881V support in-system programming after soldering?

Yes, SLG46881V supports in-system programming via its I²C interface using standard-mode (100 kbps) or fast-mode (400 kbps) protocols. Configuration data is written to one-time programmable NVM through Renesas' GreenPAK Designer software and compatible programmers (e.g., SLG4DVKHV). No external high-voltage supply is needed. Once programmed, the SLG46881V retains configuration across power cycles - critical for field-deployed devices where firmware updates are impractical.

How does the f(1) computation macrocell in SLG46881V differ from standard LUTs?

The f(1) macrocell in SLG46881V is a dedicated hardware unit that executes a single Boolean function (e.g., AND, OR, XOR) with direct input from ACMP0H and output to a GPO - all in one cycle, with no routing delay. Unlike general-purpose LUTs, it cannot be reconfigured as flip-flops or counters and has fixed ACMP coupling. This enables sub-100 ns conditional actions (e.g., "turn on LED if ACMP0H trips") without consuming macrocell resources - a capability unique to SLG46881V among GreenPAK devices.

Can SLG46881V generate accurate timing delays longer than 1 second?

Yes, SLG46881V supports programmable delays up to 2.7 seconds using its 8-bit counter/delay macrocells clocked by the 2.048 kHz oscillator. For longer intervals, cascaded CNT/DLY macrocells or the 16-bit CNT/DLY (with 25 MHz clock) extend range to ~262 ms at max frequency - but true multi-second accuracy relies on the 2.048 kHz source. The SLG46881V's crystal oscillator option further improves long-delay stability, achieving ±50 ppm accuracy versus RC-based alternatives.

Is the analog temperature sensor in SLG46881V factory-calibrated?

Yes, the SLG46881V's analog temperature sensor is factory-calibrated at 25 °C and exhibits a linear output of approximately 10 mV/°C across –40 °C to +85 °C (Section 20, datasheet). Output is ratiometric to VDD, so measurement accuracy depends on stable VDD reference. No user calibration is required for ±3 °C typical accuracy; however, system-level compensation may improve precision in thermally non-uniform PCB layouts. This sensor is identical in SLG46880/81 variants.