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Microchip Technology 23A1024-E/P

Name: 23A1024-E/P
Brand: Microchip Technology
SKU: 23A1024-E/P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 23A1024-E/P

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: 23A1024-E/P.pdf

Description:: IC SRAM 1MBIT SPI/QUAD 8DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

23A1024-E/P from Microchip Technology is a 1 Mbit (128K × 8) low-voltage SPI Serial SRAM with SDI and SQI interface support, operating from 1.7–2.2 V over –40°C to +125°C. It delivers 20 MHz clock rate in SPI/SDI/SQI modes, 3 mA read current at 2.2 V, and 4 µA standby current at +85°C, enabling fast, low-power data buffering in automotive infotainment and engine control units.

For engineers reviewing the 23A1024-E/P datasheet, 23A1024-E/P pinout, 23A1024-E/P application, or 23A1024-E/P equivalent, key selection criteria include its 1.7–2.2 V supply range, E-temp qualification, 8-lead PDIP package, dual/quad I/O capability, and zero write time for deterministic memory access in safety-critical embedded systems.

Technical Context

The 23A1024-E/P implements a serial SRAM architecture with three configurable access modes-Byte, Page (32-byte), and Sequential-controlled via a writable MODE register. Its instruction set includes READ (0x03), WRITE (0x02), EDIO (0x3B), EQIO (0x38), and RSTIO (0xFF), enabling dynamic bus mode switching between SPI, SDI, and SQI protocols without reset.

It supports full-duplex SPI operation with dedicated SI/SO pins, bidirectional SDI using SI/SO (SIO0/SIO1), and quad-data-rate SQI using SIO0–SIO3. HOLD functionality is active only in SPI/SDI modes and disabled in SQI mode, while V_DR = 1.0 V ensures reliable data retention during brown-out conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	1 Mbit (128K × 8 bits); supports byte/page/sequential reads/writes with automatic address increment
Supply Voltage	1.7–2.2 V; enables direct interfacing with 1.8 V logic domains and low-power microcontrollers
Max Clock Frequency	20 MHz (I-temp), 16 MHz (E-temp); defines maximum sustained data throughput of ~2.5 MB/s in SPI mode
Read Current	3 mA at 2.2 V, 20 MHz; determines active power budget in high-bandwidth logging applications
Standby Current	4 µA at +85°C; enables ultra-low-power sleep states in always-on automotive modules
Data Retention Voltage	1.0 V minimum; guarantees RAM contents survive undervoltage events down to 1.0 V without backup capacitor
Interface Modes	SPI (4-wire), SDI (dual I/O), SQI (quad I/O); allows bandwidth scaling from 20 Mbps to 80 Mbps depending on host controller capability

Pinout & Package

8-lead PDIP package (300 mil body), RoHS-compliant, through-hole mountable with 0.3 inch width and standard DIP footprint.

Pin/Terminal	Circuit Role	Design Meaning
1 - CS	Chip Select Input	Active-low enable; forces device into Standby mode when high, tri-states SO to allow bus sharing
2 - SO/SIO1	Serial Output / SDI/SQI I/O 1	Output-only in SPI; bidirectional in SDI/SQI; latched on SCK rising edge (input), updated after falling edge (output)
3 - SIO2	Serial I/O 2 (SQI only)	Unused in SPI/SDI; must be pulled high or tied to VCC if not used in SQI mode to prevent bus lockup
4 - VSS	Ground Reference	Primary return path for all I/O and core logic; requires low-impedance connection to system ground plane
5 - SI/SIO0	Serial Input / SDI/SQI I/O 0	Input-only in SPI; bidirectional in SDI/SQI; receives instructions, addresses, and data MSB-first
6 - SCK	Serial Clock Input	Synchronizes all data transfers; rising edge latches input, falling edge updates output; max 20 MHz (I), 16 MHz (E)
7 - HOLD/SIO3	Hold Input / SQI I/O 3	HOLD active only in SPI/SDI; suspends ongoing transfer without resetting address pointer; disabled in SQI mode
8 - VCC	Power Supply	1.7–2.2 V nominal; bypassing with 100 nF ceramic capacitor near pin is mandatory for stable operation

Key Features

Feature	Design Value
Zero Write Time	Eliminates write cycle delays-data is stored immediately upon CS deactivation, enabling real-time timestamping and event capture
Unlimited Read/Write Cycles	Supports continuous logging and buffer rotation over product lifetime without wear-out concerns
Page Mode (32-byte)	Reduces command overhead by allowing up to 32 sequential bytes per WRITE instruction, improving burst throughput by 3× vs. byte mode
SDI/SQI Compatibility	Enables bandwidth scaling from 20 Mbps (SPI) to 40 Mbps (SDI) and 80 Mbps (SQI) using same physical device and layout
E-Temp Qualification	Rated for –40°C to +125°C ambient; validated for under-hood automotive use without derating or thermal margin penalties

Applications

Automotive Engine Control Unit (ECU)	Industrial PLC Data Logger
Use Scenario: Real-time storage of sensor calibration coefficients, fault codes, and transient engine parameters during cold cranking and hot restart. IC Role / Device Role / Timing Role: Nonvolatile SRAM buffer interfaced directly to MCU's SPI port; provides deterministic <100 ns access latency and zero-write-time updates. Use Value: Maintains critical runtime data across ignition cycles without EEPROM wear or battery backup, leveraging 1.0 V data retention voltage during 9–12 V brown-outs.	Use Scenario: High-speed cyclic buffering of analog input samples from 16-channel ADC in factory-floor motion control systems. IC Role / Device Role / Timing Role: High-bandwidth serial memory co-processor supporting burst writes at 20 MHz SPI or 40 MHz SDI to match sampling rate. Use Value: Enables 32-byte page writes to reduce CPU overhead by 75% versus byte-by-byte transfers, sustaining >2.4 MB/s effective throughput.
Medical Infusion Pump Controller	Avionics Health Monitoring Module
Use Scenario: Storing dose history, alarm logs, and therapy profiles with guaranteed integrity during mains power loss or battery switchover. IC Role / Device Role / Timing Role: Safety-critical SRAM with E-temp rating and 4 µA standby current; accessed via isolated SPI interface. Use Value: Meets IEC 62304 Class C software requirements by eliminating write latency and ensuring data persistence down to 1.0 V supply.	Use Scenario: Capturing flight-test telemetry streams (vibration, temperature, pressure) at 10 kHz sample rate across multiple sensors. IC Role / Device Role / Timing Role: High-reliability serial buffer supporting SQI mode for 80 Mbps burst capture into FPGA-based acquisition logic. Use Value: Reduces host processor load and PCB routing complexity versus parallel SRAM, while maintaining DO-254 traceability via documented timing margins.

Automotive Engine Control Unit (ECU)

Industrial PLC Data Logger

Use Scenario: Real-time storage of sensor calibration coefficients, fault codes, and transient engine parameters during cold cranking and hot restart.

IC Role / Device Role / Timing Role: Nonvolatile SRAM buffer interfaced directly to MCU's SPI port; provides deterministic <100 ns access latency and zero-write-time updates.

Use Value: Maintains critical runtime data across ignition cycles without EEPROM wear or battery backup, leveraging 1.0 V data retention voltage during 9–12 V brown-outs.

Use Scenario: High-speed cyclic buffering of analog input samples from 16-channel ADC in factory-floor motion control systems.

IC Role / Device Role / Timing Role: High-bandwidth serial memory co-processor supporting burst writes at 20 MHz SPI or 40 MHz SDI to match sampling rate.

Use Value: Enables 32-byte page writes to reduce CPU overhead by 75% versus byte-by-byte transfers, sustaining >2.4 MB/s effective throughput.

Medical Infusion Pump Controller

Avionics Health Monitoring Module

Use Scenario: Storing dose history, alarm logs, and therapy profiles with guaranteed integrity during mains power loss or battery switchover.

IC Role / Device Role / Timing Role: Safety-critical SRAM with E-temp rating and 4 µA standby current; accessed via isolated SPI interface.

Use Value: Meets IEC 62304 Class C software requirements by eliminating write latency and ensuring data persistence down to 1.0 V supply.

Use Scenario: Capturing flight-test telemetry streams (vibration, temperature, pressure) at 10 kHz sample rate across multiple sensors.

IC Role / Device Role / Timing Role: High-reliability serial buffer supporting SQI mode for 80 Mbps burst capture into FPGA-based acquisition logic.

Use Value: Reduces host processor load and PCB routing complexity versus parallel SRAM, while maintaining DO-254 traceability via documented timing margins.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
23LC1024-E/P	Wider VCC range (2.5–5.5 V); higher ICC (10 mA read @ 5.5 V); same pinout, timing, and instruction set	Designed for 3.3 V/5 V systems; unsuitable for 1.8 V logic domains requiring 23A1024-E/P's 1.7–2.2 V operation	Select 23LC1024-E/P only when host MCU operates at ≥2.5 V and higher read current is acceptable
IS61WV102416BLL-10MLI	Parallel 16-bit x 64K SRAM; 10 ns access; 3.3 V only; no serial interface or SDI/SQI support	Requires 24+ signal lines and dedicated address/data bus; incompatible with SPI-based designs	Choose only for legacy parallel-bus architectures where board space and pin count permit; not a drop-in replacement

Compared with 23LC1024-E/P, the 23A1024-E/P offers lower supply voltage and reduced active current but identical E-temp rating and package; versus the IS61WV102416BLL-10MLI, it trades parallel speed and simplicity for serial footprint savings and flexible interface modes.

Availability

23A1024-E/P is available at Aetrix Electronics and suitable for automotive ECU development, industrial data loggers, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 23A1024-E/P 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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.

The 23A1024-E/P belongs to Microchip's serial SRAM product line, engineered specifically for low-voltage, high-speed, and extended-temperature embedded applications where deterministic zero-write-time memory access is required without battery backup or EEPROM wear limitations.

FAQ

What is the operating voltage range for the 23A1024-E/P?

The 23A1024-E/P operates from 1.7 V to 2.2 V. This narrow low-voltage range enables direct integration with 1.8 V microcontrollers and reduces system power consumption. Operation outside this range-such as at 2.5 V-is not specified and may cause functional failure or data corruption. The 23A1024-E/P is distinct from the 23LC1024-E/P, which supports 2.5–5.5 V.

Does the 23A1024-E/P support Quad SPI (QSPI) mode?

Yes, the 23A1024-E/P supports Serial Quad Interface (SQI) mode via the EQIO command (0x38), enabling four-bit-per-clock data transfer at up to 16 MHz in E-temp. In SQI mode, pins SIO0–SIO3 are used as bidirectional data lines, and HOLD functionality is disabled. The device must be explicitly commanded into SQI mode; it powers up in standard SPI mode.

What is the maximum clock frequency for the 23A1024-E/P at extended temperature?

The maximum clock frequency for the 23A1024-E/P is 16 MHz when operating across the full –40°C to +125°C extended temperature range. This is explicitly specified in Table 1-2 (AC Characteristics) and applies to all interface modes-SPI, SDI, and SQI. At industrial temperature (–40°C to +85°C), the limit increases to 20 MHz.

How does the HOLD function operate on the 23A1024-E/P?

The HOLD function on the 23A1024-E/P pauses an ongoing serial transfer without resetting the internal address pointer. It is active only in SPI and SDI modes-not in SQI-and requires HOLD to be asserted while SCK is low. Upon assertion, SO immediately goes high-impedance; resuming requires HOLD to go high while SCK remains low. The 23A1024-E/P must remain selected (CS low) throughout.

Is the 23A1024-E/P pin-compatible with the 23LC1024-E/P?

Yes, the 23A1024-E/P and 23LC1024-E/P share identical 8-lead PDIP pinout, instruction set, timing specifications, and package dimensions. However, they differ electrically: 23A1024-E/P requires 1.7–2.2 V, while 23LC1024-E/P requires 2.5–5.5 V. Swapping them without adjusting supply voltage will result in non-operation or damage.

23A1024-E/P Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM

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:: 1.7V ~ 2.2V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

23A1024-E/P FAQ

1.How can I place an order for 23A1024-E/P through Aetrix?

Please submit a Request for Quotation (RFQ) for 23A1024-E/P 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 23A1024-E/P reliable?

The price and inventory of 23A1024-E/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 23A1024-E/P is usually 5 days.

3.What payment methods are accepted for 23A1024-E/P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 23A1024-E/P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 23A1024-E/P?

23A1024-E/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 23A1024-E/P 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 23A1024-E/P?

For technical support, including 23A1024-E/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 23A1024-E/P requirements.

6.How does Aetrix verify that 23A1024-E/P is sourced from the original manufacturer or authorized distributors?

All 23A1024-E/P 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 23A1024-E/P meets industry standards.

7.What is the process for return or replacement of 23A1024-E/P?

All 23A1024-E/P units undergo pre-shipment inspection (PSI). If there is an issue with 23A1024-E/P, 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 23A1024-E/P part is unused and in its original packaging.

Return procedure for 23A1024-E/P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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