My Inquiry
My Account
Microchip Technology 93C56BT-E/MNY
- Part No.:
- 93C56BT-E/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
93C56BT-E/MNY.pdf
- Description:
- IC EEPROM 2KBIT MICROWIRE 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,820
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
93C56BT-E/MNY from Microchip Technology Inc. is a 2 Kbit (256 × 8-bit) low-voltage serial EEPROM with Microwire-compatible 3-wire interface, 4.5–5.5 V supply range, and industrial-temperature operation (−40°C to +85°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 embedded system configuration storage and calibration data retention.
For engineers reviewing the 93C56BT-E/MNY datasheet, 93C56BT-E/MNY pinout, 93C56BT-E/MNY application, or 93C56BT-E/MNY equivalent, key selection criteria include its fixed 8-bit organization (no ORG pin), 2 ms typical write cycle time, 1 million endurance cycles, and compatibility with legacy Microwire controllers in space-constrained industrial control modules.
Technical Context
This device implements a synchronous serial interface using CS, CLK, and DI/DO pins with start-bit detection and opcode-based command decoding. It operates exclusively in x8 mode (ORG pin not present), requiring no external configuration logic. All programming commands - ERASE, WRITE, ERAL, WRAL - are initiated by falling edge of CS (for 93C variants), with status monitored via DO pin polling.
Internal architecture includes an address decoder, data register, mode decode logic, and output buffer. Power-on reset circuitry enforces VCC ≥ 3.8 V for reliable operation, and EWEN/EWDS commands provide software-controlled write protection. Standby current is ≤ 5 µA at 25°C with CS low and CLK/ORG/DI held static.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit) - supports up to 256 bytes of nonvolatile configuration or calibration data |
| VCC range | 4.5 V to 5.5 V - compatible with standard 5 V logic systems; no operation below 3.8 V due to POR threshold |
| Write cycle time | 2 ms max - enables fast field updates without blocking host MCU for extended periods |
| Endurance | 1,000,000 erase/write cycles - suitable for applications requiring frequent parameter logging or firmware patching |
| Data retention | 200 years at 25°C - ensures long-term reliability in unattended industrial deployments |
| Interface | Microwire-compatible 3-wire serial (CS/CLK/DI/DO) - interoperable with legacy microcontrollers lacking SPI hardware |
| Temp range | −40°C to +85°C (Industrial grade) - qualified for use in motor drives, PLC I/O modules, and HVAC controllers |
Pinout & Package
93C56BT-E/MNY is housed in an 8-lead 2×3 mm DFN (Dual Flat No-lead) package with exposed pad, Pb-free Matte Tin finish. Pin 1 is marked by laser, and the exposed pad may be connected to VSS or left floating per design requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-high enable; must be held low ≥250 ns between instructions; deselects device into standby (≤5 µA ICCS) |
| CLK | Serial Clock | Synchronizes all data transfers; rising edge clocks in opcodes, addresses, and data; stoppable at any level |
| DI | Data Input | Receives start bit, instruction opcodes, memory addresses, and write data; high impedance when not selected |
| DO | Data Output / Status | Outputs read data or Ready/Busy signal (low = busy); enters High-Z on CS falling edge |
| VSS | Ground | Reference for all digital and analog functions; connects to exposed pad in DFN package |
| NC | No internal connection | Pin 7 is unconnected - must not be tied to any voltage or signal |
| VCC | Power Supply | 4.5–5.5 V supply; internal POR circuit disables operations below ~3.8 V |
| ORG | Organization select | Not present on 93C56B/T variants - device is fixed 8-bit (x8) organization |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed erase/write | Eliminates need for external timing control - host MCU can poll DO pin or use fixed 2 ms delay |
| Automatic ERAL before WRAL | Guarantees full array erasure prior to bulk write, preventing stale data corruption during firmware updates |
| Power-on/off data protection | Hardware-enforced lockout below VCC = 3.8 V prevents inadvertent writes during brown-out or power ramp |
| Ready/Busy status signaling | DO pin doubles as status indicator - enables efficient polling without dedicated status registers or interrupts |
| EWEN/EWDS software protection | Prevents accidental writes via explicit enable/disable commands - critical for field-upgradable systems |
Applications
| Industrial Sensor Calibration | Motor Drive Configuration Storage |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in factory automation nodes. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding factory-trimmed calibration parameters accessed at power-up. Use Value: Enables single-point calibration across operating temperature range using 256-byte x8 organization and 200-year data retention. | Use Scenario: Retaining motor PID tuning constants, current limits, and commutation tables in BLDC drive modules. IC Role / Device Role / Timing Role: Serial EEPROM interfaced to motor control MCU via Microwire for persistent parameter storage. Use Value: Supports 1M endurance cycles for field updates and maintains settings through 100k+ power cycles in harsh EMI environments. |
| PLC I/O Module Identity | Medical Device Usage Log |
Use Scenario: Holding module type, firmware revision, and channel mapping data in modular programmable logic controller backplanes. IC Role / Device Role / Timing Role: Microwire EEPROM providing plug-and-play identification and configuration for hot-swappable I/O cards. Use Value: Fixed 8-bit interface simplifies glue logic; 4.5–5.5 V operation matches PLC 5 V bus; −40°C to +85°C rating ensures reliability. | Use Scenario: Recording usage hours, error codes, and maintenance intervals in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power serial memory storing tamper-resistant operational logs accessible only via authenticated host commands. Use Value: EWEN/EWDS commands prevent unauthorized log modification; 1 µA standby current extends battery life in handheld units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 93LC56BT-I/MNY | Same 2 Kbit x8 organization, but wider VCC range (2.5–5.5 V) and identical DFN package | Supports mixed-voltage systems (e.g., 3.3 V MCU + 5 V peripherals); lacks 93C's higher VCC noise immunity | Select when system operates below 4.5 V or requires broader supply tolerance |
| AT25020B-MAHL-T | 2 Kbit SPI EEPROM (not Microwire), 1.8–5.5 V, SOIC-8 package, 5 MHz max clock | Requires SPI interface instead of Microwire; no ORG pin but also no native 93C command set compatibility | Select when migrating to SPI infrastructure or needing faster clock rates; verify firmware command translation |
Compared with 93LC56BT-I/MNY, the 93C56BT-E/MNY offers tighter VCC noise margin above 4.5 V and guaranteed 2 ms write timing, while AT25020B-MAHL-T provides higher throughput but demands interface redesign and lacks direct opcode compatibility.
Availability
93C56BT-E/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration, motor drive configuration storage, and PLC I/O module identity applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for 93C56BT-E/MNY 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, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 93Cxx series targets cost-sensitive, space-constrained embedded systems requiring simple, robust nonvolatile storage - optimized for Microwire compatibility, low pin count, and industrial-grade reliability without external components.
FAQ
What is the memory organization of the 93C56BT-E/MNY?
The 93C56BT-E/MNY is a fixed 256 × 8-bit (2 Kbit) serial EEPROM with no ORG pin. Unlike 'C' variants, it does not support x16 mode - all operations use 8-bit addressing and data transfer. This eliminates external configuration logic and simplifies integration in legacy Microwire systems where x8 is the standard.
Does the 93C56BT-E/MNY require an external pull-up resistor on the DO pin?
No, the 93C56BT-E/MNY does not require an external pull-up on DO. The pin actively drives high/low during read or status polling and enters High-Z when deselected (CS low) or idle. However, if DI and DO are shorted (shared bus), a current-limiting resistor is recommended to prevent bus conflict during dummy-zero read phases.
What is the minimum VCC required for reliable operation of the 93C56BT-E/MNY?
The 93C56BT-E/MNY incorporates a power-on reset circuit that inhibits all operations until VCC reaches approximately 3.8 V. Below this threshold, the device remains in a locked state - no commands execute, and write protection is enforced. This ensures data integrity during power ramp-up or brown-out conditions.
How is write protection implemented in the 93C56BT-E/MNY?
Write protection in the 93C56BT-E/MNY uses dual mechanisms: hardware POR lockout below 3.8 V and software-controlled EWEN/EWDS commands. The device powers up in EWDS (Erase/Write Disable) mode; an explicit EWEN instruction must precede any ERASE or WRITE. After programming, issuing EWDS re-locks the memory - a critical safeguard against firmware glitches.
Can the 93C56BT-E/MNY be used in automotive applications?
No, the 93C56BT-E/MNY is rated for Industrial temperature range (−40°C to +85°C), not Automotive (−40°C to +125°C). For automotive use, Microchip specifies the 'E' grade variant (e.g., 93C56BT-E/MS) with extended qualification, higher VCC stability margins, and AEC-Q100 compliance - the 'T' suffix in 93C56BT-E/MNY denotes tape-and-reel packaging, not temperature grade.
93C56BT-E/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN 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:
- 128 x 16
- Memory Interface:
- Microwire
- Clock Frequency:
- 2 MHz
- Write Cycle Time - Word, Page:
- 2ms
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
93C56BT-E/MNY FAQ
1.How can I place an order for 93C56BT-E/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 93C56BT-E/MNY 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 93C56BT-E/MNY reliable?
The price and inventory of 93C56BT-E/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 93C56BT-E/MNY is usually 5 days.
3.What payment methods are accepted for 93C56BT-E/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 93C56BT-E/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 93C56BT-E/MNY?
93C56BT-E/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 93C56BT-E/MNY 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 93C56BT-E/MNY?
For technical support, including 93C56BT-E/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 93C56BT-E/MNY requirements.
6.How does Aetrix verify that 93C56BT-E/MNY is sourced from the original manufacturer or authorized distributors?
All 93C56BT-E/MNY 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 93C56BT-E/MNY meets industry standards.
7.What is the process for return or replacement of 93C56BT-E/MNY?
All 93C56BT-E/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 93C56BT-E/MNY, 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 93C56BT-E/MNY part is unused and in its original packaging.
Return procedure for 93C56BT-E/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
93C56BT-E/MNY 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…
