Microchip Technology 23LCV02M-I/SL

Overview

23LCV02M-I/SL from Microchip Technology is a 2-Mbit serial SRAM with SPI/SDI/SQI interface, 143 MHz max clock frequency, 2.2–3.6 V supply range, industrial temperature rating (–40°C to +85°C), and integrated VBAT pin for external battery backup. It delivers zero write time, unlimited read/write cycles, and on-chip ECC for data integrity in embedded memory buffering applications.

For engineers reviewing the 23LCV02M-I/SL datasheet, 23LCV02M-I/SL pinout, 23LCV02M-I/SL application, or 23LCV02M-I/SL equivalent, this device supports high-speed serial memory expansion in space-constrained systems requiring non-volatile retention during main power loss, configurable page size (32/256 bytes), and multi-mode interface flexibility (SPI/SDI/SQI) without PCB redesign.

Technical Context

The 23LCV02M-I/SL implements a triple-mode serial interface-defaulting to SPI mode at power-up-with software-configurable SDI (2-bit I/O) and SQI (4-bit I/O) modes enabled via EDIO/EQIO commands. Its internal address counter supports byte, page, and sequential read/write operations, with automatic wraparound at 256 KB boundary.

It integrates hardware ECC logic that detects and corrects single-bit errors during reads, latching status in the STATUS register's ECS bit; retains both RAM contents and STATUS register settings during VCC brownout via automatic VBAT switchover at 1.75–1.95 V trip point.

Key Specifications

Pinout & Package

23LCV02M-I/SL is packaged in 14-lead SOIC (SL) with exposed pad not present; pin 1 is CS, pin 14 is VCC, and pin 10 is VBAT. All NC pins (5–9) must remain unconnected. The package is RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial SRAM applications.

Compared with 23LCV02M-I/SL, 23AA02M-I/SN removes VBAT capability and reduces pin count, while FM25V20A-G trades interface flexibility and hardware backup for intrinsic non-volatility and infinite write endurance-making each suitable for distinct power architecture and reliability priorities.

Availability

23LCV02M-I/SL is available at Aetrix Electronics and suitable for industrial data loggers, automotive telematics units, medical wearable sensor hubs, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 23LCV02M-I/SL 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

Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 23LCV02M belongs to Microchip's serial SRAM product line, designed specifically for embedded systems needing fast, reliable, low-power memory expansion with seamless battery backup integration and multi-protocol interface scalability.

FAQ

What is the maximum clock frequency supported by the 23LCV02M-I/SL in High-Speed Read mode?

The 23LCV02M-I/SL supports up to 143 MHz in High-Speed Read (0x0B) mode across SPI, SDI, and SQI interfaces. This is confirmed in Table 1-3 AC Characteristics and Section 3.7 of the datasheet. Standard Read (0x03) mode is limited to 40 MHz. The 23LCV02M-I/SL achieves this speed with sub-3 ns timing margins including TCSS, TSU, and TV under industrial conditions.

Does the 23LCV02M-I/SL require external pull-up resistors on its I/O pins?

No, the 23LCV02M-I/SL does not require external pull-ups on SI, SO, SCK, or CS for standard operation-the device incorporates internal weak pull-ups on inputs per functional description in Section 2.1–2.8. However, external termination may be needed for signal integrity in high-speed (>40 MHz) or long-trace layouts. The 23LCV02M-I/SL datasheet specifies VIH/VIL thresholds relative to VCC, not absolute voltages.

How does the VBAT pin function during main power failure?

The VBAT pin on the 23LCV02M-I/SL enables automatic switchover when VCC drops below the 1.75–1.95 V trip point (VTRIP), preserving both RAM contents and STATUS register settings. No external circuitry is required-the 23LCV02M-I/SL handles detection, switching, and reversion autonomously. VBAT operates from 1.4 V to 3.6 V and draws only 70 µA typical standby current.

Can the 23LCV02M-I/SL operate in SDI or SQI mode immediately after power-up?

No-the 23LCV02M-I/SL defaults to SPI mode after power-on reset for backward compatibility. SDI mode is entered via the EDIO command (0x3B), and SQI mode via EQIO (0x38); both require explicit host initialization. The STATUS register PROT bits (12–11) reflect the current mode and are read-only. The 23LCV02M-I/SL remains in the selected mode until reset or RSTIO command.

What page sizes are supported by the 23LCV02M-I/SL and how are they configured?

The 23LCV02M-I/SL supports user-selectable 32-byte or 256-byte pages, controlled by bit 8 (PAGE SIZE) in the STATUS register. Writing '0' selects 32-byte pages (8,192 total pages); writing '1' selects 256-byte pages (1,024 total pages). This setting affects internal address wrap behavior during page-mode reads/writes and is retained across VCC cycles when VBAT is active.