W78C438C40FL
Nuvoton Technology Corporation
W78C438C40FL
Nuvoton Technology Corporation
IC MCU 8BIT ROMLESS 100QFP
Reference Price (USD)
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$3.91947
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$3.8802753
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$3.8410806
1500+
$3.8018859
2000+
$3.7626912
2500+
$3.7234965
Exquisite packaging
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W78C438C40FL
$3.92
Product details
Nuvoton Technology Corporation's W78C438C40FL delivers military-grade reliability in Embedded - Microcontrollers, developed for aerospace and defense applications where radiation tolerance and mission longevity are paramount.The 8051 core incorporates triple modular redundancy for SEU mitigation, achieving >99% single-event upset immunity in orbital radiation environments.A 8-Bit architecture with parity-protected data paths prevents silent data corruption, meeting MIL-STD-883G requirements for spaceborne electronics.When operating at 40MHz, the microcontroller maintains timing accuracy within 0.01% despite temperature variations from -55 C to 125 C, critical for navigation systems.The EBI/EMI, Serial Port interfaces implement Manchester encoding for noise-immune data transmission, ensuring reliable communication in high-EMI environments like radar installations.With 40 MIL-STD-1553-compatible interfaces, the device can serve as a remote terminal in distributed avionics architectures without external transceivers.The ROMless implementation uses SONOS technology that withstands 300krad total ionizing dose, exceeding space qualification requirements.256 x 8 of scrubable memory prevents accumulation of single-event upsets, maintaining data integrity during extended missions in high-radiation orbits.The 4.5V ~ 5.5V range supports operation from unregulated spacecraft power buses with 100mV ripple, eliminating need for additional regulation stages.The External clock source incorporates automatic frequency compensation that maintains <1ppm/ C drift across the military temperature range.Qualified for 0°C ~ 70°C (TA), the device operates reliably in exoatmospheric conditions where thermal cycling extremes exceed commercial specifications.Surface Mount packaging uses AuSn die attach for superior thermal conductivity in vacuum environments, preventing die delamination during thermal transients.The 100-QFP format provides hermetic sealing against moisture ingress, meeting MIL-PRF-38534 Class K requirements for high-reliability applications.
Product Attributes
- Product Status: Not For New Designs
- Core Processor: 8051
- Core Size: 8-Bit
- Speed: 40MHz
- Connectivity: EBI/EMI, Serial Port
- Peripherals: -
- Number of I/O: 40
- Program Memory Size: -
- Program Memory Type: ROMless
- EEPROM Size: -
- RAM Size: 256 x 8
- Voltage - Supply (Vcc/Vdd): 4.5V ~ 5.5V
- Data Converters: -
- Oscillator Type: External
- Operating Temperature: 0°C ~ 70°C (TA)
- Mounting Type: Surface Mount
- Package / Case: 100-QFP
- Supplier Device Package: -
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