Microchip Technology 23LCV04M-I/SL

Overview

23LCV04M-I/SL from Microchip Technology is a 4,096-Kbit serial SRAM with SPI/SDI/SQI interface, 2.2V–3.6V supply range, industrial temperature rating (–40°C to +85°C), built-in ECC logic, and external battery backup support via VBAT pin-used for non-volatile data retention in power-loss scenarios in embedded control systems.

For engineers reviewing the 23LCV04M-I/SL datasheet, 23LCV04M-I/SL pinout, 23LCV04M-I/SL application, or 23LCV04M-I/SL equivalent, key selection criteria include VBAT-enabled data retention, 143 MHz SQI read capability, 14-lead TSSOP/SOIC/PDIP package compatibility, and configurable page size (32/256 bytes) for memory access optimization.

Technical Context

The 23LCV04M-I/SL implements a triple-mode serial interface supporting SPI (mode 0/3), SDI (2-bit multiplexed I/O), and SQI (4-bit multiplexed I/O), enabling scalable bandwidth from 40 MHz (SPI READ) to 143 MHz (High-Speed READ). It uses on-chip ECC logic to detect and correct single-bit errors during reads, with the ECS bit latching correction status in the STATUS register.

Power management includes automatic VBAT switchover at 1.75–1.95 V (VTRIP), retaining both SRAM contents and STATUS register settings during main supply dropout. The device supports byte/page/sequential access modes, user-selectable 32- or 256-byte page sizes, and configurable output drive strength (8 levels) and slew rate (4 settings) for signal integrity tuning.

Key Specifications

Pinout & Package

23LCV04M-I/SL is available exclusively in 14-lead packages: SOIC, PDIP, and TSSOP. Pin 10 is dedicated VBAT; pins 5–9 and 11–13 are NC (no-connect). The device requires no external pull-ups on SIO lines in SQI mode due to internal termination control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 23AA04M-I/SN, the 23LCV04M-I/SL adds VBAT retention and wider voltage tolerance but requires 14-lead layout; versus IS66WV51216EBLL-100B1LI, it reduces pin count and power by >60% while adding ECC and flexible interface modes-ideal for new compact, battery-resilient designs.

Availability

23LCV04M-I/SL is available at Aetrix Electronics and suitable for industrial data loggers, automotive body control modules, medical infusion pump controllers, and smart energy meters requiring stable component supply across extended product lifecycles.

Supply support for 23LCV04M-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 devices, FPGAs, and memory solutions, serving industrial, automotive, and communications markets with high-reliability silicon.

The 23LCV04M-I/SL belongs to Microchip's serial SRAM product line, designed specifically for space-constrained, low-power, battery-resilient embedded systems needing fast, error-tolerant non-volatile data buffering.

FAQ

What is the VBAT switchover voltage threshold for the 23LCV04M-I/SL?

The 23LCV04M-I/SL switches to VBAT backup when VCC falls within 1.75 V to 1.95 V (VTRIP range). This ensures seamless data retention before main supply collapse, preserving both SRAM contents and STATUS register settings without host intervention. The 23LCV04M-I/SL maintains operation down to 1.0 V on VBAT, supporting long-term hold with standard coin cells.

Does the 23LCV04M-I/SL support SPI mode 0 and mode 3 simultaneously?

Yes, the 23LCV04M-I/SL natively supports both SPI mode 0 (CPOL=0, CPHA=0) and mode 3 (CPOL=1, CPHA=1) without reconfiguration. The device samples SIO[1:0] on the rising edge of SCK and drives outputs after the falling edge in both modes. The 23LCV04M-I/SL defaults to mode 0 after power-on reset but accepts mode 3 commands immediately upon initialization.

How does the ECC feature work in the 23LCV04M-I/SL?

The 23LCV04M-I/SL implements on-chip ECC logic that automatically detects and corrects single-bit errors during read operations. When correction occurs, the Error Correction State (ECS) bit in the STATUS register is set to '1'. The 23LCV04M-I/SL does not require host software intervention-the correction is transparent and completes within normal read timing, ensuring data integrity without performance penalty.

Can the 23LCV04M-I/SL operate at 143 MHz in all interface modes?

No-the 143 MHz maximum clock frequency applies only to High-Speed READ (0x0B) in SQI mode. In SPI mode, the 23LCV04M-I/SL supports up to 40 MHz for standard READ (0x03). SDI mode also supports 143 MHz for High-Speed READ, but standard READ remains limited to 40 MHz. The 23LCV04M-I/SL's AC characteristics confirm distinct timing specs per mode and instruction.

What package options are available for the 23LCV04M-I/SL?

The 23LCV04M-I/SL is offered exclusively in 14-lead packages: SOIC (I/SL suffix), PDIP, and TSSOP. Unlike the 8-lead 23AA04M, the 23LCV04M-I/SL requires the full 14-pin footprint to accommodate VBAT and NC pins. The "SL" in 23LCV04M-I/SL specifically denotes the 14-lead SOIC package with industrial temperature grade.