MC68HC908JK8MP
Motorola
MC68HC908JK8MP
Motorola
IC MCU 8BIT 1.5KB FLASH 20DIP
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Product details
The MC68HC908JK8MP by Motorola pioneers ultra-reliable Embedded - Microcontrollers for railway signaling systems. Its fail-safe architecture and SIL4 certification make it the preferred choice for vital train control applications.The 8-Bit architecture incorporates quadruple modular redundancy for all safety-critical calculations in railway interlocking systems.Operating at 8MHz, the device processes track occupancy data with deterministic latency below 100 s, crucial for moving block signaling systems.Integrated LED, LVD, POR, PWM include vital relay drivers with continuous self-testing capabilities required for railway signaling equipment.23 fail-safe digital inputs incorporate galvanic isolation and continuous contact monitoring for track circuit interfaces.1.5KB (1.5K x 8) accommodates SIL4-certified application code with complete diversity between primary and secondary safety channels.The FLASH implementation includes periodic memory scrubbing that detects and corrects radiation-induced soft errors.128 x 8 of ECC-protected memory maintains data integrity even during severe electromagnetic disturbances in traction power environments.The 2.7V ~ 3.3V range withstands 100V transients common in railway power distribution systems with 24V nominal supply.Safety-certified A/D 12x8b perform continuous self-calibration to maintain 0.1% accuracy in axle counter sensor interfaces.The External includes redundant clock sources with automatic switchover to maintain timing during oscillator failures.Rated for -40°C ~ 125°C (TA), the device operates reliably in trackside enclosures without climate control.Through Hole packaging withstands 5g vibration and 50g shock loads specified in EN 61373 for rolling stock equipment.The 20-DIP (0.300", 7.62mm) provides 8kV surge protection on all lines exposed to overhead catenary induction and lightning strikes.Available in 20-PDIP, the microcontroller includes complete safety documentation for railway certification processes.
Product Attributes
- Product Status: Active
- Core Processor: -
- Core Size: 8-Bit
- Speed: 8MHz
- Connectivity: -
- Peripherals: LED, LVD, POR, PWM
- Number of I/O: 23
- Program Memory Size: 1.5KB (1.5K x 8)
- Program Memory Type: FLASH
- EEPROM Size: -
- RAM Size: 128 x 8
- Voltage - Supply (Vcc/Vdd): 2.7V ~ 3.3V
- Data Converters: A/D 12x8b
- Oscillator Type: External
- Operating Temperature: -40°C ~ 125°C (TA)
- Mounting Type: Through Hole
- Package / Case: 20-DIP (0.300", 7.62mm)
- Supplier Device Package: 20-PDIP
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