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M93C86-WDW6TP
STMicroelectronics
IC EEPROM 16KBIT MIC WIRE 8TSSOP
3774 Pcs New Original In Stock
EEPROM Memory IC 16Kbit Microwire 2 MHz 8-TSSOP
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5.0 / 5.0
- (165 Ratings)
M93C86-WDW6TP
Product Overview
8167725
DiGi Electronics Part Number
M93C86-WDW6TP-DGManufacturer
STMicroelectronics
M93C86-WDW6TP
Description
IC EEPROM 16KBIT MIC WIRE 8TSSOPInventory
3774 Pcs New Original In Stock
EEPROM Memory IC 16Kbit Microwire 2 MHz 8-TSSOP
Quantity
Minimum 1
Minimum 1
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M93C86-WDW6TP Technical Specifications
Category
Memory, Memory
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
DiGi-Electronics Programmable
Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
16Kbit
Memory Organization
2K x 8, 1K x 16
Memory Interface
Microwire
Clock Frequency
2 MHz
Write Cycle Time - Word, Page
5ms
Voltage - Supply
2.5V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
8-TSSOP
Base Product Number
M93C86
Datasheet & Documents
HTML Datasheet
M93C86-WDW6TP-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Other Names
M93C86WDW6TP
497-8664-6
M93C86-WDW6TP-DG
497-8664-1
497-8664-2
Standard Package
4,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
DiGi Electronics offers unbeatable prices without compromising on quality, making tech accessible for everyone.
December 02, 2025
Their commitment to product diversity and pricing honesty is commendable.
December 02, 2025
Their support team is incredibly responsive and solves problems efficiently.
December 02, 2025
Transparent pricing policies at DiGi Electronics ensure I always know exactly what I am paying for.
December 02, 2025
DiGi Electronics continuously meets and exceeds expectations with their dependable offerings.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing M93C86-WDW6TP with 93LC86CT-I/ST in a 3.3V automotive control module, and how can signal integrity be maintained?
Replacing M93C86-WDW6TP with 93LC86CT-I/ST introduces compatibility risks due to subtle differences in Microwire timing and voltage thresholds—especially near the lower end of the 2.5V supply range. The 93LC86CT-I/ST has slightly stricter setup/hold time requirements on the SK (clock) line, which may cause intermittent read/write failures in high-noise automotive environments. To mitigate this, ensure your MCU’s SPI timing margins exceed 10% beyond datasheet specs, add 100Ω series resistors on SK, DI, and DO lines to dampen ringing, and validate operation across the full –40°C to 85°C range. Always verify page write recovery timing, as deviations can corrupt adjacent memory locations during power transients.
Can M93C86-WDW6TP be safely used in a 1.8V system if powered through a level shifter, and what are the reliability implications?
No, M93C86-WDW6TP should not be used in a 1.8V system—even with level shifters—because its minimum supply voltage is 2.5V, and internal charge pumps for write operations require this threshold to function reliably. Attempting to interface it with 1.8V logic via level shifters creates asymmetric timing risks: while inputs might be shifted up, the EEPROM’s output (DO) will still swing at 2.5V–5.5V levels, potentially overdriving 1.8V MCU pins. This can lead to latch-up or long-term oxide degradation. For 1.8V designs, select a native low-voltage alternative like AT93C86A-10TU-1.8 instead, which guarantees full functionality down to 1.8V and avoids reliability hazards.
How does M93C86-WDW6TP compare to CAV93C86YE-GT3 in terms of endurance and data retention under continuous write cycles in industrial IoT sensors?
Both M93C86-WDW6TP and CAV93C86YE-GT3 specify 1 million write cycles and 200-year data retention, but real-world performance diverges under continuous cycling. The CAV93C86YE-GT3 uses a more robust cell architecture optimized for frequent small-block updates common in IoT logging, showing better resilience to write-disturb errors during page writes. In contrast, M93C86-WDW6TP’s write algorithm is more sensitive to incomplete power-down sequences—a risk in battery-powered sensors with brownout events. For high-write-frequency applications, add a 10ms delay after VCC stabilizes before issuing writes, and consider wear-leveling across multiple addresses to extend effective lifespan beyond nominal ratings.
What PCB layout practices are critical to prevent accidental writes or corruption in M93C86-WDW6TP when used near high-current motor drivers?
To prevent unintended writes in M93C86-WDW6TP near motor drivers, isolate the EEPROM’s VCC and GND with a local 100nF ceramic capacitor placed within 2mm of the package, and route Microwire signals (SK, DI, CS) away from motor traces or use grounded guard traces. The device lacks hardware write protection beyond the standard WREN/WDSR commands, so electromagnetic interference (EMI) on the CS or SK lines can falsely trigger write cycles. Additionally, ensure the system firmware implements a software-based write gate: only enable writes after confirming stable VCC (>2.7V) via ADC monitoring, and disable writes during motor PWM transitions. Without these measures, inductive spikes can induce glitches that corrupt calibration data.
Is M93C86-WDW6TP a drop-in replacement for M93C86-RDW3TP/K in a legacy 5V industrial controller, and what firmware changes are needed?
M93C86-WDW6TP is electrically compatible with M93C86-RDW3TP/K and can serve as a drop-in replacement in 5V systems, but firmware must account for minor timing differences. The ‘-W’ variant has a slightly faster internal write cycle (typically 4.2ms vs. 5ms max), which may cause race conditions if your code assumes a fixed 5ms delay after writes. Reduce the post-write delay to 4.5ms and add a read-verify step to confirm completion. Also, verify that your controller’s Microwire clock idle state matches the M93C86-WDW6TP’s requirement (SK idle low); some legacy designs incorrectly assume high-idle clocks, leading to misaligned data. No hardware changes are needed, but validate timing at both 2.5V and 5.5V supply extremes to ensure robustness.
Quality Assurance (QC)
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