Renesas SLG46108V-SKT

Overview

SLG46108V-SKT from Renesas Electronics is a one-time programmable (OTP) ultra-small mixed-signal configurable IC implementing logic, timing, filtering, and power management functions in a single STQFN-8 package (1.0 × 1.2 × 0.55 mm). It integrates four LUTs (two 2-bit, two 3-bit), three 8-bit counter/delay generators, RC oscillator (25 kHz or 2 MHz), POR, and six programmable I/O pins - delivering system-level glue logic replacement for space-constrained embedded control applications.

For engineers reviewing the SLG46108V-SKT datasheet, SLG46108V-SKT pinout, SLG46108V-SKT application, or SLG46108V-SKT equivalent, this device serves as a low-power, field-configurable alternative to discrete logic, timers, and level translators in PC peripherals, handheld electronics, and datacom interface conditioning circuits where board area and BOM count reduction are critical.

Technical Context

The SLG46108V-SKT implements a user-programmable interconnect matrix routing signals between six I/O pins and internal macrocells including combinational LUTs, DFF/latch blocks, pipe delay stages, and CNT/DLY units. Its RC oscillator supports auto- and forced-power modes with selectable pre-divider (÷1/÷2/÷4/÷8) and secondary divider (÷1/÷2/÷3/÷4/÷8/÷12/÷24/÷64), enabling precise clock generation without external components.

Each I/O pin supports multiple configurations: digital input (with/without Schmitt trigger or low-voltage mode), push-pull (1X/2X), open-drain NMOS/PMOS (1X/2X), and selectable 10 kΩ/100 kΩ/1 MΩ pull-up or pull-down resistors - with Pin 2 fixed as input-only and Pins 4 & 8 configurable as bidirectional I/O.

Key Specifications

Pinout & Package

Pb-free 8-pin STQFN package: 1.0 mm × 1.2 mm × 0.55 mm body, 0.4 mm pitch, exposed thermal pad (not electrically connected). Compatible with standard reflow profiles and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SLG46122V and SLG46533V, the SLG46108V-SKT offers the smallest footprint and lowest static power for pure digital glue logic - making it optimal for ultra-compact, battery-sensitive applications where analog or expanded I/O are unnecessary.

Availability

SLG46108V-SKT is available at Aetrix Electronics and suitable for keyboard debounce, USB power sequencing, industrial sensor interface conditioning, and legacy display backlight control requiring stable component supply and long-term manufacturability.

Supply support for SLG46108V-SKT 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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The GreenPAK family - including SLG46108V-SKT - was designed to replace discrete logic, timers, and level translators with field-programmable mixed-signal ICs targeting space-constrained, cost-sensitive embedded control systems.

FAQ

What programming tools are required to configure the SLG46108V-SKT?

The SLG46108V-SKT is programmed using Renesas' free GreenPAK Designer software and a compatible programming adapter (e.g., SLG4DVKLB-817). The tool enables schematic- or text-based design entry, simulation, and OTP programming via the device's I²C-compatible interface. No external programmer license or subscription is required, and on-chip emulation allows functional validation before final NVM programming.

Can the SLG46108V-SKT operate reliably at 1.8 V supply while driving 3.3 V logic inputs?

Yes - the SLG46108V-SKT supports 1.8 V operation and its GPIO pins can be configured as push-pull or open-drain outputs with programmable drive strength. When used as an open-drain NMOS output with external 3.3 V pull-up, it safely interfaces with 3.3 V logic inputs. Its VIH/VIL thresholds scale with VDD, ensuring correct recognition of 3.3 V signals when configured as an input with Schmitt trigger enabled.

Does the SLG46108V-SKT support reprogramming after initial OTP configuration?

No - the SLG46108V-SKT uses one-time programmable (OTP) non-volatile memory. Once programmed, the configuration is permanent and cannot be erased or rewritten. However, GreenPAK Designer supports full on-chip emulation: the design runs dynamically in RAM while powered, allowing unlimited iteration and verification before committing to OTP. This ensures design correctness prior to final programming of SLG46108V-SKT.

How does the RC oscillator accuracy affect timing-critical functions like pulse generation?

The SLG46108V-SKT's RC oscillator exhibits ±7.66 % frequency variation over -40 °C to +85 °C at 1.8 V. For pulse generation, this translates to ±7.7 % timing error in delay or period - acceptable for non-precision tasks like switch debouncing or power sequencing, but insufficient for UART baud rate generation or audio clocking. For such cases, use an external clock input or select a higher-accuracy oscillator variant like SLG46533V with integrated reference.

What is the maximum output current capability of SLG46108V-SKT GPIO pins?

At 5 V supply, SLG46108V-SKT GPIO pins support up to 5.47 mA sink current (open-drain NMOS 2X, VOL = 0.15 V) and 56.32 mA source current (push-pull 2X, VOH = 2.4 V). Total per-side current limits apply: ≤45 mA through VDD and ≤90 mA through GND. These ratings allow direct driving of small LEDs, MOSFET gates, or logic inputs - but not high-current loads like relays or motors without external buffering.