Renesas SLG46538V

Overview

SLG46538V from Renesas Electronics is a programmable mixed-signal matrix IC with asynchronous state machine and dual-supply operation (VDD: 1.8–5 V, VDD2 ≤ VDD). It integrates four analog comparators, two voltage references, 19 combination function macrocells, I²C interface, crystal/RC oscillators, 8-byte RAM + OTP memory, and supports level translation between independent voltage domains. It serves as a configurable logic-and-analog bridge in power management and signal conditioning circuits for PC peripherals and handheld electronics.

For engineers reviewing the SLG46538V datasheet, SLG46538V pinout, SLG46538V application, or SLG46538V equivalent, this device enables rapid prototyping of custom mixed-signal functions without ASIC development-particularly where dual-voltage domain interfacing, low-power comparator-based triggering, or reconfigurable timing/logic is required in space-constrained embedded systems.

Technical Context

The SLG46538V implements a user-programmable interconnect matrix routing signals between 17 GPIOs, four ACMPs, two VREF outputs, and macrocells including LUTs, DFFs, counters, filters, and a state machine with eight states. Its dual-supply architecture isolates I/O groups (IO0–IO8 on VDD; IO9/IO10/IO12–IO17 on VDD2) to enable bidirectional level translation without external components.

Configuration is stored in one-time-programmable (OTP) NVM, but supports on-chip emulation via GreenPAK Designer for iterative logic/macrocell validation prior to programming. The device includes Power-On Reset, deglitch filters with edge detection, and I²C serial communication compliant with standard protocol timing.

Key Specifications

Pinout & Package

SLG46538V is supplied in 20-pin STQFN package (2 × 3 × 0.55 mm, 0.4 mm pitch), RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SLG46538V, SLG46537V reduces footprint and cost at the expense of dual-supply flexibility and analog resource depth, while SLG46620V trades crystal timing and voltage-domain isolation for integrated ADC capability-making each alternative optimal only under specific architectural constraints.

Availability

SLG46538V is available at Aetrix Electronics and suitable for PC peripheral design, industrial sensor interface development, and portable electronics power management requiring stable component supply across high-mix, low-volume production runs.

Supply support for SLG46538V 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 applications.

The SLG46538V belongs to the GreenPAK family of configurable mixed-signal ICs, designed to replace discrete logic, analog, and timing components with field-programmable, low-power, small-footprint alternatives for rapid system customization.

FAQ

What is the primary function of the SLG46538V in a system design?

The SLG46538V serves as a user-programmable mixed-signal matrix that replaces multiple discrete components-including comparators, logic gates, timers, and level shifters-with a single configurable IC. Its dual-supply architecture enables hardware-level voltage domain bridging, while its macrocells implement custom signal conditioning, sequencing, and interface logic without firmware. This makes SLG46538V ideal for consolidating analog and digital functions in compact, low-power embedded systems.

Does the SLG46538V support in-system reprogramming after OTP configuration?

No-the SLG46538V uses one-time-programmable (OTP) non-volatile memory for final configuration storage. However, Renesas GreenPAK Designer supports full on-chip emulation: users can load and test configurations dynamically while powered, allowing unlimited logic revisions before committing to OTP. Once programmed, the SLG46538V retains its configuration permanently, ensuring deterministic behavior in production.

Can the SLG46538V operate with different supply voltages on VDD and VDD2 simultaneously?

Yes-the SLG46538V explicitly supports independent VDD and VDD2 supplies, provided VDD2 ≤ VDD and both fall within their respective ranges (1.71–5.5 V for VDD; 1.71–VDD for VDD2). This allows true bidirectional level translation: for example, VDD = 3.3 V and VDD2 = 1.8 V enables interfacing between a 3.3 V microcontroller and 1.8 V sensors or FPGAs, using only the SLG46538V's native I/O structures without external translators.

How many analog comparators does the SLG46538V include, and what are their key electrical limits?

The SLG46538V integrates four analog comparators (ACMP0–ACMP3). Each accepts positive inputs across 0–VDD and negative inputs up to 1.2 V (independent of VDD). Input leakage is ≤1000 nA, and hysteresis is programmable via macrocell configuration-not fixed. The comparators drive internal logic directly and support deglitch filtering; they do not provide rail-to-rail output swing but feed cleanly into downstream macrocells for decision-making or state transitions.

Is the SLG46538V pin-compatible with other GreenPAK devices like the SLG46537V or SLG46620V?

No-SLG46538V is not pin-compatible with SLG46537V (16-pin) or SLG46620V (20-pin with different pin mapping). While all three use STQFN packages, their pinouts differ significantly: SLG46538V dedicates Pins 16–20 to XTAL0/1, EXT_CLK0–2, VREF0/VREF1, and IO17, whereas SLG46620V repurposes those pins for ADC inputs and additional GPIOs. Board layout must be designed specifically for SLG46538V; no drop-in replacement is possible without PCB revision.