Renesas SLG46537V-SKT

Overview

SLG46537V-SKT from Renesas Electronics is a programmable mixed-signal matrix IC with asynchronous state machine, 4 analog comparators, 2 voltage references, 19 combination function macrocells, I²C interface, and OTP memory. It operates from 1.8 V to 5 V across –40 °C to +85 °C and integrates RC/XTAL oscillators, deglitch filters, and an analog temperature sensor. It serves as a configurable logic-and-analog subsystem in power sequencing and system monitoring.

For engineers reviewing the SLG46537V-SKT datasheet, SLG46537V-SKT pinout, SLG46537V-SKT application, or SLG46537V-SKT equivalent, this page delivers verified electrical specs, STQFN-20/MSTQFN-22 package mapping, ASM timing behavior, ACMP input ranges, I²C timing compliance (400 kHz), and real-world use cases in PC peripherals and handheld electronics.

Technical Context

The SLG46537V-SKT implements a user-programmable interconnect matrix routing signals between 18 GPIOs, 4 ACMPs, 2 VREFs, and 19 macrocells-including LUTs, DFFs, counters/delays, and pipe delay structures. Its Asynchronous State Machine supports 8 states with flexible transition logic and sub-60 ns output transitions at 5 V.

I²C communication uses dedicated open-drain SCL/SDA pins (IO6/IO7) compliant with standard-mode (400 kHz) timing, while dual supply domains isolate IO groups (0–8 and 9–17) for independent current management. The device includes two RC oscillators (25 kHz/2 MHz/25 MHz), crystal oscillator support, and programmable deglitch filters with edge detection.

Key Specifications

Pinout & Package

SLG46537V-SKT is available in STQFN-20 (2 mm × 3 mm, 0.4 mm pitch) and MSTQFN-22 (2 mm × 2.2 mm, 0.4 mm pitch) packages. Pin functions are identical across both variants except for NC placements and minor IO reassignments; both support full feature set including I²C, ACMP, XTAL, and VREF.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SLG46536V and SLG46620V, the SLG46537V-SKT uniquely balances ASM-based deterministic control, 4 ACMPs, and compact STQFN-20 packaging-making it optimal for mid-complexity power management where timing predictability and analog integration are critical.

Availability

SLG46537V-SKT is available at Aetrix Electronics and suitable for PC peripheral design, handheld electronics development, and data communications equipment requiring stable component supply and rapid prototyping support.

Supply support for SLG46537V-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 IoT markets.

The SLG46537V-SKT belongs to the GreenPAK programmable mixed-signal product line, designed to replace discrete logic, timing, and analog functions with field-configurable, low-power ICs for system-level integration.

FAQ

What is the maximum I²C clock frequency supported by SLG46537V-SKT?

The SLG46537V-SKT supports standard-mode I²C operation up to 400 kHz. This is confirmed in Section 5.5 of the datasheet, where tLOW, tHIGH, and other timing parameters are specified for 400 kHz operation across all valid VDD ranges (1.8 V to 5 V). Pins IO6 (SCL) and IO7 (SDA) must be configured as NMOS open-drain outputs with external pull-ups.

Does SLG46537V-SKT include an internal temperature sensor?

Yes, the SLG46537V-SKT integrates an analog temperature sensor as a dedicated macrocell. Its output connects internally to the ACMP inputs or can be read indirectly via I²C through register-mapped values. The sensor operates across the full –40 °C to +85 °C range and is factory-calibrated for typical accuracy within ±5 °C.

Can SLG46537V-SKT operate with a 25 MHz crystal oscillator?

No-the SLG46537V-SKT supports a 25 MHz *RC oscillator*, not a 25 MHz crystal. Its crystal oscillator circuit is rated for standard fundamental-mode crystals up to 25 MHz, but actual usable frequency depends on load capacitance, stability, and drive level. The datasheet specifies XTAL0/XTAL1 pins for crystal connection and confirms functionality with crystals in the 100 kHz–25 MHz range.

How many analog comparators does SLG46537V-SKT have, and what are their input voltage limits?

The SLG46537V-SKT includes four analog comparators (ACMP0–ACMP3). Each has a positive input (ACMPx+) that accepts 0 V to VDD, and a negative input (ACMPx−) limited to 0 V to 1.2 V. This asymmetry enables precise low-voltage threshold detection using internal VREF or external references, as documented in Section 5.2 Electrical Characteristics.

Is SLG46537V-SKT pin-compatible with other GreenPAK devices like SLG46536V?

No-SLG46537V-SKT is not pin-compatible with SLG46536V. While both use STQFN packages, SLG46536V uses a 16-pin variant with different pin assignments and lacks key signals such as XTAL0/XTAL1, VREF outputs, and several ACMP inputs. Pin mappings, IO count, and functional pin roles differ significantly; PCB redesign is required for substitution.