My Inquiry
My Account
Microchip Technology 93LC56CT-E/MC15KVAO
- Part No.:
- 93LC56CT-E/MC15KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
93LC56CT-E/MC15KVAO.pdf
- Description:
- IC EEPROM 2KBIT MICROWIRE 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,988
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93LC56CT-E/MC15KVAO from Microchip Technology Inc. is a 2 Kbit low-voltage serial EEPROM with Microwire-compatible 3-wire interface, 128 × 16-bit organization, and automotive-grade temperature range (−40°C to +125°C). It features self-timed erase/write cycles, automatic ERAL before WRAL, power-on/off data protection, and Ready/Busy status signaling via DO pin. Used in engine control units for calibration storage requiring nonvolatile retention over 200 years.
For engineers reviewing the 93LC56CT-E/MC15KVAO datasheet, 93LC56CT-E/MC15KVAO pinout, 93LC56CT-E/MC15KVAO application, or 93LC56CT-E/MC15KVAO equivalent, key selection criteria include VCC range (2.5–5.5 V), 16-bit word mode (ORG = VCC), automotive qualification (E-temp), 1M endurance cycles, and DFN-8 (MC) package compatibility with space-constrained PCB layouts.
Technical Context
The 93LC56CT-E/MC15KVAO implements a synchronous serial Microwire interface with CS, CLK, and DI/DO pins, supporting x16 memory organization when ORG is tied to VCC. Its internal logic includes auto-erase-before-write, ERAL/WRAL command execution, and power-on reset detection at 1.5 V typical.
It operates across −40°C to +125°C with guaranteed timing: max 3 MHz clock frequency at VCC ≥ 4.5 V, 6 ms program cycle time, and 200 ns data output delay. The device enters Standby mode when CS is low and asserts Ready/Busy on DO during active programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (128 × 16-bit organization) |
| VCC Range | 2.5 V to 5.5 V - supports wide-input industrial and automotive power rails |
| Temperature Range | −40°C to +125°C (Automotive E-grade) - qualified for under-hood ECUs |
| Endurance | 1,000,000 erase/write cycles - enables frequent firmware or calibration updates |
| Data Retention | 200 years at 25°C - ensures long-term reliability without refresh |
| Interface | Microwire-compatible 3-wire serial (CS, CLK, DI/DO) - minimal GPIO usage on host MCU |
| Write Cycle Time | 6 ms typical - defines minimum interval between successive write commands |
Pinout & Package
93LC56CT-E/MC15KVAO uses an 8-lead 2×3 mm DFN (MC) package with exposed pad (VSS or floating). Pin 1 is marked by laser; pin 1 ID corner is top-left when notch faces up. Package is Pb-free, RoHS-compliant, and moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions to reset internal state |
| CLK | Serial Clock | Synchronizes all data transfers; rising edge clocks in opcode/address/data; stoppable mid-sequence |
| DI | Data Input | Accepts Start bit, instruction opcodes, addresses, and write data; shares net with DO in bus-configured systems |
| DO | Data Output / Status | Outputs read data or Ready/Busy signal (low = busy); high-Z when CS low or not reading |
| VSS | Ground | Reference for all I/O and internal circuitry; connected to exposed pad in MC package |
| ORG | Organization Select | Logic high selects 16-bit mode; tied to VCC for this part; NC on A/B variants |
| NC | No Internal Connection | Pin 7 is unconnected - no routing or termination required |
| VCC | Power Supply | 2.5–5.5 V supply; internal POR triggers at ~1.5 V; must be ≥4.5 V for ERAL/WRAL execution |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed Erase/Write | Eliminates external timing control; 6 ms typical cycle reduces host MCU overhead |
| Auto-ERAL before WRAL | Guarantees full-array erase prior to bulk write - prevents partial-data corruption |
| Power-On/Off Data Protection | Hardware lockout below 1.5 V VCC - prevents inadvertent writes during brownout |
| Ready/Busy Status on DO | Enables polling-based write completion detection without interrupt or timer dependency |
| Sequential Read Mode | Continuous address increment on DO while CS remains high - accelerates block reads |
| Pb-free & RoHS Compliant | Matte tin finish meets global environmental compliance requirements for automotive production |
Applications
| Engine Control Unit (ECU) Calibration Storage | Advanced Driver Assistance Systems (ADAS) Configuration Memory |
|---|---|
|
Use Scenario: Storing real-time sensor calibration coefficients and adaptive learning parameters in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed infrequently but requiring guaranteed retention over vehicle lifetime. Use Value: 200-year data retention and 1M endurance support field updates and recalibration without hardware replacement. |
Use Scenario: Holding camera alignment offsets, radar beamforming tables, and sensor fusion weights in lane-keeping assist modules. IC Role / Device Role / Timing Role: Microwire EEPROM interfaced to automotive-qualified MCU for secure boot-time parameter loading. Use Value: Automotive temperature rating (−40°C to +125°C) and 2.5–5.5 V operation ensure reliable function in under-bumper ADAS housings. |
| Body Control Module (BCM) User Preference Storage | Electric Power Steering (EPS) Motor Profile Memory |
|
Use Scenario: Saving driver seat position, mirror angle, climate presets, and lighting profiles across ignition cycles. IC Role / Device Role / Timing Role: Low-power serial EEPROM accessed during BCM wake-up sequence after key insertion. Use Value: 1 µA standby current (I-temp) and 5 µA (E-temp) minimize battery drain during vehicle sleep modes. |
Use Scenario: Storing torque compensation curves, steering assist gain maps, and fault history logs in EPS electronic control units. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory with deterministic 6 ms write latency for ASIL-B relevant data. Use Value: ERAL/WRAL atomic operations prevent partial writes during voltage transients common in 12 V automotive systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC56BT-E/SN | SOIC-8 package; same 128×16-bit organization, 2.5–5.5 V, E-temp, but no ORG pin (fixed x16) | Requires larger PCB footprint; lacks ORG flexibility but simplifies layout with no pull-up needed | Select when board space allows SOIC and ORG pin routing is undesirable |
| AT25DF021-MAHN-T | SPI interface (4-wire), 2 Mbit density, 2.7–3.6 V only, no automotive temp grade | Higher density but incompatible protocol; requires SPI-capable host and tighter VCC regulation | Select only for non-automotive designs needing >2 Kbit and SPI-native hosts |
Compared with 93LC56BT-E/SN, the 93LC56CT-E/MC15KVAO offers superior board-area efficiency in DFN-8 and retains ORG configurability; versus AT25DF021-MAHN-T, it provides automotive qualification and Microwire compatibility but lower density and different interface architecture.
Availability
93LC56CT-E/MC15KVAO is available at Aetrix Electronics and suitable for automotive control units, ADAS subsystems, and body electronics requiring stable component supply with full lifecycle traceability and E-temp qualification.
Supply support for 93LC56CT-E/MC15KVAO 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 93LC56 series belongs to Microchip's legacy Microwire-compatible EEPROM product line, designed specifically for cost-sensitive, low-pin-count embedded systems requiring robust nonvolatile storage in harsh environments.
FAQ
What is the memory organization of the 93LC56CT-E/MC15KVAO?
The 93LC56CT-E/MC15KVAO is configured as a 128 × 16-bit EEPROM. Its ORG pin is internally tied to VCC per the 'C' variant designation, selecting x16 word size. This differs from the 'A' (x8 fixed) and 'B' (x16 fixed, no ORG) versions. The 93LC56CT-E/MC15KVAO delivers 2 Kbit total capacity with 16-bit parallel access per address.
Does the 93LC56CT-E/MC15KVAO require external pull-up resistors on its I/O lines?
The 93LC56CT-E/MC15KVAO does not require external pull-ups on CS, CLK, or DI for basic operation, as these are driven actively by the host controller. However, a 10 kΩ pull-down on CS is recommended per Microchip's application guidance to prevent spurious activation during power-up. DO is open-drain capable and may need a pull-up if used in shared-bus configurations.
Can the 93LC56CT-E/MC15KVAO be used in systems with 1.8 V supply rails?
No, the 93LC56CT-E/MC15KVAO has a minimum VCC of 2.5 V and is not rated for 1.8 V operation. For 1.8 V systems, consider the 93AA56C variant (1.8–5.5 V range), which shares the same pinout and instruction set but uses different process technology and threshold characteristics. Using 93LC56CT-E/MC15KVAO below 2.5 V risks undefined behavior and failed writes.
How is the Ready/Busy status monitored on the 93LC56CT-E/MC15KVAO?
The 93LC56CT-E/MC15KVAO asserts Ready/Busy status on the DO pin: DO = low indicates ongoing erase/write operation; DO = high indicates completion. To sample status, CS must be brought high for ≥250 ns after TCSL, then DO is sampled on CLK edges. After completion, issuing a Start bit followed by CS low clears the status flag. This eliminates need for external timers or interrupts.
Is the exposed pad on the 93LC56CT-E/MC15KVAO's DFN package electrically connected?
Yes, the exposed pad on the 93LC56CT-E/MC15KVAO's MC package is internally connected to VSS and must be soldered to a PCB ground plane for thermal and electrical performance. Microchip documentation states it "may be connected to VSS or left floating", but best practice is direct VSS connection to ensure optimal ESD immunity, thermal dissipation, and signal integrity - especially critical in automotive environments.
93LC56CT-E/MC15KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8, 128 x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 6ms
- 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-DFN (2x3)
93LC56CT-E/MC15KVAO FAQ
1.How can I place an order for 93LC56CT-E/MC15KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 93LC56CT-E/MC15KVAO 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 93LC56CT-E/MC15KVAO reliable?
The price and inventory of 93LC56CT-E/MC15KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93LC56CT-E/MC15KVAO is usually 5 days.
3.What payment methods are accepted for 93LC56CT-E/MC15KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93LC56CT-E/MC15KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93LC56CT-E/MC15KVAO?
93LC56CT-E/MC15KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93LC56CT-E/MC15KVAO 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 93LC56CT-E/MC15KVAO?
For technical support, including 93LC56CT-E/MC15KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93LC56CT-E/MC15KVAO requirements.
6.How does Aetrix verify that 93LC56CT-E/MC15KVAO is sourced from the original manufacturer or authorized distributors?
All 93LC56CT-E/MC15KVAO 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 93LC56CT-E/MC15KVAO meets industry standards.
7.What is the process for return or replacement of 93LC56CT-E/MC15KVAO?
All 93LC56CT-E/MC15KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 93LC56CT-E/MC15KVAO, 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 93LC56CT-E/MC15KVAO part is unused and in its original packaging.
Return procedure for 93LC56CT-E/MC15KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93LC56CT-E/MC15KVAO 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…
