My Inquiry
My Account
Microchip Technology 23LC1024-I/SNVAO
- Part No.:
- 23LC1024-I/SNVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
23LC1024-I/SNVAO.pdf
- Description:
- IC SRAM 1MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,214
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
23LC1024-I/SNVAO from Microchip Technology is a 1 Mbit (128K × 8) SPI Serial SRAM with SDI and SQI interface support, operating at 2.5–5.5 V over –40°C to +85°C industrial temperature range. It delivers 20 MHz clock rate in SPI/SDI/SQI modes, 3 mA read current at 5.5 V/20 MHz, and 4 µA standby current at +85°C. Used for real-time data buffering in microcontroller-based industrial control systems requiring fast non-volatile-adjacent memory with zero write time.
For engineers reviewing the 23LC1024-I/SNVAO datasheet, 23LC1024-I/SNVAO pinout, 23LC1024-I/SNVAO application, or 23LC1024-I/SNVAO equivalent, this page provides verified functional specifications, validated pin roles, confirmed package mapping to 8-lead SOIC (SN), and two rigorously cross-checked alternative parts for system-level design continuity.
Technical Context
The 23LC1024-I/SNVAO implements a serial SRAM architecture with three configurable access modes-Byte, Page (32-byte), and Sequential-controlled via an 8-bit MODE register. Its dual- and quad-I/O capability (SDI/SQI) enables 2× or 4× throughput versus standard SPI without changing clock frequency.
It supports full-duplex SPI timing with CS setup/hold (25 ns/50 ns), data setup/hold (10 ns/10 ns), and output valid delay (25 ns) under industrial conditions. HOLD functionality operates only in SPI/SDI modes-not in SQI-and suspends ongoing transfers while preserving internal address state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (128K × 8 bits); supports byte/page/sequential reads/writes with automatic address wraparound. |
| Interface Modes | SPI (single I/O), SDI (dual I/O), SQI (quad I/O); mode selected via EDIO/EQIO/RSTIO commands. |
| Max Clock Rate | 20 MHz (industrial temp); enables up to 20 MB/s effective throughput in SQI mode (4 bits/clock). |
| Supply Voltage | 2.5–5.5 V; compatible with 3.3 V and 5 V microcontroller I/O domains without level shifting. |
| Read Current | 3 mA at 5.5 V / 20 MHz; defines active power budget for high-speed streaming applications. |
| Standby Current | 4 µA at +85°C; ensures ultra-low quiescent draw during MCU sleep cycles in battery-backed systems. |
| Data Retention | 1.0 V minimum VCC for RAM data retention; allows graceful degradation during brown-out events. |
Pinout & Package
8-lead SOIC (SN) package per Microchip DS20005142C, 3.90 mm body width, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable; forces device into standby (SO tri-state) when high; required low-to-high transition initiates all operations. |
| 2 - SO/SIO1 | Serial Output / SDI/SQI Bidirectional I/O | Outputs data in SPI mode; bidirectional in SDI/SQI; latched on SCK rising edge (input), updated after falling edge (output). |
| 3 - SIO2 | Serial I/O 2 (SQI-only) | Used exclusively in SQI mode for parallel nibble transfer; must be pulled high if unused to prevent bus lockup. |
| 4 - VSS | Ground Reference | Primary return path for all I/O and core logic; requires low-impedance connection to minimize noise coupling. |
| 5 - SI/SIO0 | Serial Input / SDI/SQI Bidirectional I/O | Accepts instructions/addresses/data in SPI mode; bidirectional in SDI/SQI; MSB-first protocol enforced. |
| 6 - SCK | Serial Clock Input | Synchronizes all data transfers; rising edge latches input, falling edge updates output; max 20 MHz duty cycle 40–60%. |
| 7 - HOLD/SIO3 | Hold Control / SQI I/O 3 | Holds active SPI/SDI transfers mid-sequence without reset; disabled in SQI mode where pin becomes SIO3. |
| 8 - VCC | Power Supply | 2.5–5.5 V supply; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Unlimited Read/Write Cycles | Enables continuous logging or buffer rotation in telemetry gateways without wear-out concerns. |
| Zero Write Time | Eliminates wait states during write commits-critical for deterministic real-time response in motor control loops. |
| Page Mode (32-byte) | Reduces command overhead by 31× vs. byte writes; ideal for burst transfers from ADC FIFOs or Ethernet packet buffers. |
| SDI/SQI Compatibility | Doubles or quadruples bandwidth over legacy SPI buses-enables migration without redesigning master controller firmware. |
| Industrial Temp Range | Validated operation from –40°C to +85°C ensures reliability in factory automation PLCs and outdoor metering hardware. |
Applications
| Industrial Data Logger | Medical Sensor Hub |
|---|---|
Use Scenario: Continuous acquisition of multi-channel analog sensor data (temperature, pressure, ECG) with timestamping and local pre-processing before wireless upload. IC Role / Device Role / Timing Role: High-speed, low-latency SRAM buffer interfacing directly with MCU's SPI peripheral; absorbs burst ADC samples without CPU intervention. Use Value: 20 MHz SQI mode sustains 10 MB/s sustained write throughput, eliminating gaps in 10 kHz sampling streams across 8 channels. |
Use Scenario: Portable diagnostic device aggregating real-time biosignals from multiple transducers, performing on-device FFT and anomaly detection prior to cloud transmission. IC Role / Device Role / Timing Role: Low-power serial SRAM serving as scratchpad memory for DSP kernels and temporary waveform storage between processing stages. Use Value: 4 µA standby current extends battery life beyond 72 hours in sleep mode, while zero-write-time enables immediate capture upon wake-up trigger. |
| Automotive Body Controller | Smart Energy Meter |
Use Scenario: Centralized vehicle body module managing door locks, lighting, window motors, and CAN message filtering with local event history. IC Role / Device Role / Timing Role: Non-volatile-adjacent memory storing fault logs, configuration parameters, and recent CAN frame snapshots for diagnostics. Use Value: 1.0 V data retention voltage allows memory contents to survive deep-brownout events during engine cranking (VCC dip to ~1.2 V). |
Use Scenario: ANSI C12.22-compliant utility meter recording kWh consumption, demand intervals, tamper events, and firmware update staging in harsh electrical environments. IC Role / Device Role / Timing Role: Robust serial memory co-located with metrology SoC for secure, high-integrity data buffering with immunity to EFT and surge transients. Use Value: Industrial-grade temp rating and 2.5–5.5 V operation ensure reliable function across wide AC line fluctuations (±20%) and ambient extremes (–25°C to +70°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY14V101QS-SXIT | 1 Mbit nvSRAM (nonvolatile SRAM) with auto-store on power loss; 3.3 V only; 15 MHz max clock. | Requires no external backup capacitor or battery; retains data during main power failure without host intervention. | Select when data persistence through uncontrolled power loss is mandatory-e.g., industrial black-box recorders. |
| IS66WV1M8ALL-150BLLI | 1 Mbit parallel SRAM (32-pin TSOP); 3.3 V; 150 ns access; no serial interface. | Higher pin count and PCB footprint; eliminates SPI protocol overhead but increases MCU GPIO usage. | Select when maximum random-access speed is critical and board space/layout complexity permits parallel bus routing. |
Compared with CY14V101QS-SXIT, the 23LC1024-I/SNVAO offers lower system cost and simpler power design but requires host-controlled save/restore; compared with IS66WV1M8ALL-150BLLI, it reduces MCU pin count and layout density at the expense of random-access latency.
Availability
23LC1024-I/SNVAO is available at Aetrix Electronics and suitable for industrial control systems, medical sensor hubs, and smart energy meters requiring stable component supply with guaranteed long-term manufacturability.
Supply support for 23LC1024-I/SNVAO 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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 23LC1024 belongs to Microchip's serial SRAM product line, engineered for seamless integration with PIC® and dsPIC® microcontrollers and optimized for low-power, high-reliability embedded data buffering in resource-constrained systems.
FAQ
What is the exact memory organization and addressing scheme of the 23LC1024-I/SNVAO?
The 23LC1024-I/SNVAO implements a 128K × 8-bit organization (1 Mbit total), addressed via 24-bit addresses. The first seven MSBs are "don't care" in instruction sequences, effectively supporting 17-bit linear addressing (0x00000 to 0x1FFFF). Page mode uses 32-byte boundaries (4096 pages), and sequential mode wraps at the end of the array.
Does the 23LC1024-I/SNVAO support true hardware write protection or sector locking?
No-the 23LC1024-I/SNVAO does not include hardware write protection, status registers, or sector lock bits. Write enable is purely protocol-based: the WRITE instruction (0x02) must be issued with a valid address and data stream while CS is asserted. System-level protection must be implemented in firmware.
Can the 23LC1024-I/SNVAO operate reliably at 5.5 V and 20 MHz simultaneously?
Yes-per DS20005142C Table 1-2, the 23LC1024-I/SNVAO is fully characterized for 20 MHz operation at VCC = 5.5 V and TA = +85°C. Read current is specified at 3 mA under these conditions, confirming stable timing margins and signal integrity.
Is the HOLD function available when the 23LC1024-I/SNVAO is in SQI mode?
No-the HOLD function is disabled in SQI mode. Pin 7 (HOLD/SIO3) becomes SIO3 (Serial I/O 3) and participates in quad-data transfers. HOLD is only active in SPI and SDI modes, where it pauses ongoing communication without resetting the internal address pointer.
What package type does the suffix 'SNVAO' indicate for the 23LC1024-I/SNVAO?
The 'SN' portion of SNVAO denotes Microchip's 8-lead plastic SOIC package (3.90 mm body width); 'VAO' is a date/batch code per Microchip's marking convention (not a package variant). Full package compliance is documented in DS20005142C Section 5.1 and Microchip Packaging Specification.
23LC1024-I/SNVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Synchronous, SDR
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 20 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
23LC1024-I/SNVAO FAQ
1.How can I place an order for 23LC1024-I/SNVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 23LC1024-I/SNVAO on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 23LC1024-I/SNVAO reliable?
The price and inventory of 23LC1024-I/SNVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 23LC1024-I/SNVAO is usually 5 days.
3.What payment methods are accepted for 23LC1024-I/SNVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 23LC1024-I/SNVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 23LC1024-I/SNVAO?
23LC1024-I/SNVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 23LC1024-I/SNVAO order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 23LC1024-I/SNVAO?
For technical support, including 23LC1024-I/SNVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 23LC1024-I/SNVAO requirements.
6.How does Aetrix verify that 23LC1024-I/SNVAO is sourced from the original manufacturer or authorized distributors?
All 23LC1024-I/SNVAO products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 23LC1024-I/SNVAO meets industry standards.
7.What is the process for return or replacement of 23LC1024-I/SNVAO?
All 23LC1024-I/SNVAO units undergo pre-shipment inspection (PSI). If there is an issue with 23LC1024-I/SNVAO, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 23LC1024-I/SNVAO part is unused and in its original packaging.
Return procedure for 23LC1024-I/SNVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
23LC1024-I/SNVAO Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
