Z86D991SZ008SG
Zilog
Z86D991SZ008SG
Zilog
IC MCU 8BIT 32KB OTP 28SOIC
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Product details
Zilog's Z86D991SZ008SG delivers military-grade reliability in Embedded - Microcontrollers, developed for aerospace and defense applications where radiation tolerance and mission longevity are paramount.The Z8 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 8MHz, the microcontroller maintains timing accuracy within 0.01% despite temperature variations from -55 C to 125 C, critical for navigation systems.Brown-out Detect/Reset, LVD, POR, WDT include radiation-hardened timers and watchdog circuits that automatically recover from single-event functional interrupts within 10 s.With 24 MIL-STD-1553-compatible interfaces, the device can serve as a remote terminal in distributed avionics architectures without external transceivers.32KB (32K x 8) of TMR-protected storage accommodates flight control algorithms with full error detection and correction capabilities.The OTP implementation uses SONOS technology that withstands 300krad total ionizing dose, exceeding space qualification requirements.489 x 8 of scrubable memory prevents accumulation of single-event upsets, maintaining data integrity during extended missions in high-radiation orbits.The 3V ~ 5.5V range supports operation from unregulated spacecraft power buses with 100mV ripple, eliminating need for additional regulation stages.The Internal 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 28-SOIC (0.295", 7.50mm Width) format provides hermetic sealing against moisture ingress, meeting MIL-PRF-38534 Class K requirements for high-reliability applications.
Product Attributes
- Product Status: Obsolete
- Core Processor: Z8
- Core Size: 8-Bit
- Speed: 8MHz
- Connectivity: -
- Peripherals: Brown-out Detect/Reset, LVD, POR, WDT
- Number of I/O: 24
- Program Memory Size: 32KB (32K x 8)
- Program Memory Type: OTP
- EEPROM Size: -
- RAM Size: 489 x 8
- Voltage - Supply (Vcc/Vdd): 3V ~ 5.5V
- Data Converters: -
- Oscillator Type: Internal
- Operating Temperature: 0°C ~ 70°C (TA)
- Mounting Type: Surface Mount
- Package / Case: 28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package: -
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