23LCV1024T-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 23LCV1024T-I/SN is a 1 Mbit serial SRAM from Microchip with SPI interface, operating at 3.3 V with a 20 MHz clock and battery-backup VCAP retention mode. Organized as 128K x 8 bits in an 8-pin SOIC package. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 23LCV1024T-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1 Mbit capacity (128K x 8) with 20 MHz SPI clock for high-bandwidth serial memory access
- Battery-backup VCAP pin enables data retention during power-down without volatile data loss
- 8-pin SOIC package with separate I/O pins simplifies SPI bus sharing in multi-device systems
Applications
The 23LCV1024T-I/SN serves as external data buffer or scratchpad memory in microcontroller systems that need more RAM than the MCU integrates, such as data loggers, IoT gateways, and communication protocol stacks requiring large packet buffers. Its battery-backup VCAP retention mode makes it ideal for metering and industrial control applications where power failure must not cause data loss. The SPI interface at up to 20 MHz is compatible with virtually all embedded processors including PIC, AVR, and ARM Cortex-M devices.
Specifications
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 32Weeks |
| YTEOL | 14 |
| Clock Frequency-Max (fCLK) | 20MHz |
| I/O Type | SEPARATE |
| JESD-30 Code | R-PDSO-G8 |
| Memory Density | 1048576bit |
| Memory IC Type | STANDARD SRAM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 131072words |
| Number of Words Code | 128000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 128KX8 |
| Output Characteristics | 3-STATE |
| Output Enable | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Qualification Status | Not Qualified |
| Standby Current-Max | 0.00001A |
| Standby Voltage-Min | 2.5V |
| Supply Current-Max | 0.01mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 23LCV1024T-I/SN:
Microchip Technology Inc I-temp 1Mb VBAT SPI SRAM, 2.5-5.5V
Frequently Asked Questions
How much data can the 23LCV1024T-I/SN store and at what clock speed is it accessed?
The 23LCV1024T-I/SN stores 1 Mbit (128 kilobytes) organized as 128K x 8 bits and is accessed via SPI at up to 20 MHz, delivering a theoretical throughput of 2.5 MB/s in sequential burst mode. This capacity suits buffering large sensor data streams or holding communication protocol stacks in 8-bit and 32-bit microcontroller systems.
How does the VCAP battery-backup feature protect data during power interruptions?
The VCAP pin connects an external capacitor or battery that maintains 1.5 V to 3.6 V across the memory array when the primary 3.3 V rail fails, retaining all 128 kilobytes of SRAM data without an erase-write cycle. This is valuable in energy meters, industrial PLCs, and data loggers where losing buffered measurements during a brownout is unacceptable.
Can 23LCV1024T-I/SN replace an I2C EEPROM for applications needing faster write cycles?
Yes, SRAM has no write-endurance limit and zero write latency compared to typical I2C EEPROM devices that require 5 ms page write cycles and are limited to roughly 1 million write cycles. The 23LCV1024T-I/SN at 20 MHz SPI can complete a 128-byte write in under 60 µs, making it 80x faster for high-frequency data logging where EEPROM endurance would be exhausted within weeks.
Is 23LCV1024T-I/SN pin-compatible with the 23LC1024 or 23A1024 for migration between variants?
The 23LCV1024T-I/SN shares the same 8-pin SOIC pinout and SPI protocol as the 23LC1024 and 23A1024, with the key difference being the added VCAP battery-backup capability on the HOLD/VCAP pin. This pin-compatible footprint allows upgrading from a standard 1 Mbit SPI SRAM to a battery-backed variant on existing PCBs without layout changes, only a capacitor or coin-cell addition is needed.
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