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Microchip Technology 23LC1024T-E/SNVAO
- Part No.:
- 23LC1024T-E/SNVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
23LC1024T-E/SNVAO.pdf
- Description:
- IC SRAM 1MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,675
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Product details
Overview
23LC1024T-E/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 +125°C (E-temp), delivering 20 MHz clock rate in I-temp and 16 MHz in E-temp, 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 automotive infotainment and ADAS control modules.
For engineers reviewing the 23LC1024T-E/SNVAO datasheet, 23LC1024T-E/SNVAO pinout, 23LC1024T-E/SNVAO application, or 23LC1024T-E/SNVAO equivalent, this page delivers verified electrical specs, package mapping to 8-lead SOIC, confirmed SDI/SQI mode timing behavior, HOLD functionality limitations in quad mode, and validated alternative parts for extended-temperature serial memory replacement.
Technical Context
The 23LC1024T-E/SNVAO implements a SPI-compatible serial bus with three configurable modes: Byte (single-byte access), Page (32-byte auto-increment within page), and Sequential (full-array wraparound). It supports dual-data-rate SDI (SIO0/SIO1) and quad-data-rate SQI (SIO0–SIO3) protocols, with dedicated command set (0x03 READ, 0x02 WRITE, 0x3B EDIO, 0x38 EQIO, 0xFF RSTIO) and a writable MODE register controlling operation mode.
Its architecture features unlimited read/write cycles, zero write time, and data retention down to 1.0 V VCC. The HOLD pin enables mid-sequence suspension in SPI/SDI modes but is repurposed as SIO3 in SQI mode - disabling hold functionality entirely when quad interface is active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128K × 8 bits) - supports 128 KB of volatile buffer storage with byte-addressable access |
| Supply Voltage Range | 2.5–5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains without level shifting |
| Max Clock Frequency | 16 MHz at –40°C to +125°C - defines maximum sustained data throughput in automotive E-temp applications |
| Read Current | 3 mA at 5.5 V, 20 MHz - determines power budget impact during active streaming operations |
| Standby Current | 4 µA at +85°C - enables low-power sleep states in always-on vehicle subsystems |
| Data Retention Voltage | 1.0 V minimum - guarantees RAM contents survive brown-out events down to critical supply threshold |
| Page Size | 32 bytes - constrains burst write length before address wraparound or page boundary crossing |
Pinout & Package
8-lead SOIC (3.90 mm body, SN suffix), RoHS-compliant, surface-mount package with standard JEDEC outline and matte tin (Sn) finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS | Chip Select Input | Active-low enable; forces device into high-impedance standby when high, required for multi-drop SPI bus sharing |
| 2: SO/SIO1 | Serial Output / SDI/SQI Bidirectional I/O | Outputs data in SPI mode; serves as second data lane in SDI and first quad lane in SQI |
| 3: SIO2 | Serial I/O 2 (SQI-only) | Unused and must be pulled high in SPI/SDI modes; third data lane in SQI mode only |
| 4: VSS | Ground Reference | Primary return path for all internal logic and I/O circuits; requires low-impedance PCB connection |
| 5: SI/SIO0 | Serial Input / SDI/SQI Bidirectional I/O | Accepts commands/addresses/data in SPI mode; serves as first data lane in SDI and primary quad lane in SQI |
| 6: SCK | Serial Clock Input | Synchronizes all data transfers; rising edge latches input, falling edge updates output |
| 7: HOLD/SIO3 | Hold Control / SQI Bidirectional I/O | Pauses ongoing SPI/SDI transactions when pulled low; becomes fourth data lane in SQI mode (HOLD disabled) |
| 8: VCC | Power Supply | 2.5–5.5 V main supply; decoupling capacitor (0.1 µF) required near pin per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI (SQI) Interface | Enables 4-bit-per-clock transfers using SIO0–SIO3, doubling bandwidth vs. standard SPI at same clock frequency |
| Unlimited Read/Write Cycles | Eliminates wear-leveling firmware overhead and enables true SRAM-like usage in cyclic logging applications |
| Zero Write Time | Removes write latency penalty - data is stored immediately upon CS deassertion, enabling deterministic timing-critical writes |
| Three Access Modes | Byte (single-location), Page (32-byte block), and Sequential (full-array streaming) modes provide flexibility for diverse data structures |
| HOLD Pin Functionality | Allows pausing active SPI sequences without resetting state - critical for interrupt-driven host systems managing concurrent peripherals |
Applications
| Automotive Instrument Cluster | Industrial PLC Data Logger |
|---|---|
Use Scenario: Real-time storage of gauge calibration offsets and driver preference settings across ignition cycles. IC Role / Device Role / Timing Role: Volatile SRAM buffer interfacing directly with MCU's SPI peripheral for sub-millisecond parameter reads/writes. Use Value: 16 MHz E-temp clock rate ensures <10 µs access time for 32-byte page writes, meeting ASIL-B timing constraints. |
Use Scenario: Cyclic buffering of sensor readings (temperature, pressure, vibration) during network downtime. IC Role / Device Role / Timing Role: High-reliability serial memory providing seamless wraparound sequential writes without firmware address management. Use Value: Unlimited endurance and zero write time eliminate flash wear-out concerns and guarantee >10-year field operation in unattended deployments. |
| ADAS Camera Preprocessing Unit | Medical Patient Monitor Buffer |
Use Scenario: Temporary frame metadata storage (exposure, gain, timestamp) between image capture and compression stages. IC Role / Device Role / Timing Role: Low-latency SPI-accessible memory supporting burst-mode transfers synchronized to camera pixel clock. Use Value: SDI mode enables 2× throughput vs. SPI, reducing bus occupancy by 50% and freeing MCU cycles for real-time image analysis. |
Use Scenario: Secure short-term storage of vital sign waveforms (ECG, SpO₂) during wireless transmission gaps. IC Role / Device Role / Timing Role: E-temp qualified SRAM ensuring data integrity under clinical-grade thermal stress (–40°C to +125°C ambient). Use Value: 4 µA standby current extends battery life in portable monitors; 1.0 V data retention supports graceful shutdown during low-battery events. |
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); integrates lithium backup; 2.7–3.6 V supply; 25 MHz max clock | Retains data without external backup; suited for power-loss-critical medical/industrial recorders | Select when data persistence during main power failure is mandatory - adds cost and complexity vs. pure SRAM |
| IS66WV1M8ALL-16MLI | 1 Mbit parallel SRAM; 3.3 V only; 16 ns access time; 32-pin TSOP-II; no serial interface | Higher bandwidth but consumes more PCB area and MCU GPIOs; no SDI/SQI capability | Choose only if existing design uses parallel memory bus and board space allows larger footprint |
Compared with CY14V101QS-SXIT and IS66WV1M8ALL-16MLI, the 23LC1024T-E/SNVAO offers optimal balance of automotive-grade temperature range, SPI/SDI/SQI flexibility, ultra-low standby power, and compact SOIC packaging - making it ideal for new designs prioritizing serial interface simplicity and E-temp reliability without nonvolatile overhead.
Availability
23LC1024T-E/SNVAO is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial data loggers, and ADAS preprocessing units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 23LC1024T-E/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 devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 23LC1024T-E/SNVAO belongs to Microchip's serial SRAM product line, engineered specifically for high-reliability, low-power, extended-temperature applications in automotive, industrial, and medical electronics where SPI bus simplicity and deterministic timing are essential.
FAQ
What is the operating temperature range for the 23LC1024T-E/SNVAO?
The 23LC1024T-E/SNVAO is rated for –40°C to +125°C (automotive E-temp grade), validated across full range for AC/DC characteristics including 16 MHz max clock, 4 µA standby current, and reliable SDI/SQI mode operation - making it suitable for under-hood and dashboard-mounted automotive systems.
Does the 23LC1024T-E/SNVAO support Quad SPI (QSPI) mode?
Yes, the 23LC1024T-E/SNVAO supports Serial Quad Interface (SQI) mode via the EQIO command (0x38), using SIO0–SIO3 pins for 4-bit-per-clock transfers. However, HOLD functionality is disabled in SQI mode, as pin 7 becomes SIO3 - a key design constraint requiring firmware awareness.
What is the maximum clock frequency of the 23LC1024T-E/SNVAO at +125°C?
At –40°C to +125°C (E-temp), the 23LC1024T-E/SNVAO supports up to 16 MHz clock frequency, as specified in Table 1-2 AC Characteristics. This is lower than its 20 MHz rating at I-temp (–40°C to +85°C) to ensure timing margin under worst-case thermal and voltage conditions.
Can the 23LC1024T-E/SNVAO retain data during power loss?
The 23LC1024T-E/SNVAO retains data down to 1.0 V VCC (per D011 in DS20005142C), enabling graceful holdover during brown-out events. However, it is volatile memory - data is lost when VCC drops below 1.0 V or is removed entirely. External backup circuitry is required for true nonvolatile retention.
Is the 23LC1024T-E/SNVAO pin-compatible with the 23A1024 series?
No - while both share identical pinout and package (SOIC-8), the 23LC1024T-E/SNVAO operates at 2.5–5.5 V and supports E-temp, whereas the 23A1024 series requires 1.7–2.2 V and lacks E-temp qualification. Voltage mismatch makes direct substitution unsafe without system-level validation.
23LC1024T-E/SNVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 16 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
23LC1024T-E/SNVAO FAQ
1.How can I place an order for 23LC1024T-E/SNVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 23LC1024T-E/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 23LC1024T-E/SNVAO reliable?
The price and inventory of 23LC1024T-E/SNVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 23LC1024T-E/SNVAO is usually 5 days.
3.What payment methods are accepted for 23LC1024T-E/SNVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 23LC1024T-E/SNVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 23LC1024T-E/SNVAO?
23LC1024T-E/SNVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 23LC1024T-E/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 23LC1024T-E/SNVAO?
For technical support, including 23LC1024T-E/SNVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 23LC1024T-E/SNVAO requirements.
6.How does Aetrix verify that 23LC1024T-E/SNVAO is sourced from the original manufacturer or authorized distributors?
All 23LC1024T-E/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 23LC1024T-E/SNVAO meets industry standards.
7.What is the process for return or replacement of 23LC1024T-E/SNVAO?
All 23LC1024T-E/SNVAO units undergo pre-shipment inspection (PSI). If there is an issue with 23LC1024T-E/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 23LC1024T-E/SNVAO part is unused and in its original packaging.
Return procedure for 23LC1024T-E/SNVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
23LC1024T-E/SNVAO Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT24C04C-SSHM-T
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