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MC908GT16CBE
NXP USA Inc.
IC MCU 8BIT 16KB FLASH 42DIP
30974 Pcs New Original In Stock
HC08 HC08 Microcontroller IC 8-Bit 8MHz 16KB (16K x 8) FLASH 42-PDIP
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5.0 / 5.0
- (509 Ratings)
MC908GT16CBE
Product Overview
7246650
DiGi Electronics Part Number
MC908GT16CBE-DGManufacturer
NXP USA Inc.
MC908GT16CBE
Description
IC MCU 8BIT 16KB FLASH 42DIPInventory
30974 Pcs New Original In Stock
HC08 HC08 Microcontroller IC 8-Bit 8MHz 16KB (16K x 8) FLASH 42-PDIP
Quantity
Minimum 1
Minimum 1
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MC908GT16CBE Technical Specifications
Category
Embedded, Microcontrollers
Packaging
-
Series
HC08
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number of I/O
36
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
EEPROM Size
-
RAM Size
512 x 8
Voltage - Supply (Vcc/Vdd)
2.7V ~ 5.5V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Through Hole
Supplier Device Package
42-PDIP
Package / Case
42-SDIP (0.600", 15.24mm)
Base Product Number
MC908
Datasheet & Documents
HTML Datasheet
MC908GT16CBE-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.31.0001
Additional Information
Standard Package
13
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
배송이 정말 빠르고 안전했어요. 고객 지원도 친절하고 신뢰할 수 있었습니다.
de desembre 02, 2025
Leur équipe après-vente est dynamique et proactive, assurant notre satisfaction continue.
de desembre 02, 2025
Die Produktkonsistenz und der Kundenservice haben mich mehrfach überzeugt.
de desembre 02, 2025
Customer service exceeded my expectations with their professional attitude.
de desembre 02, 2025
I am pleased with how they handle after-sales issues efficiently.
de desembre 02, 2025
DiGi Electronics consistently delivers high-quality products backed by friendly service.
de desembre 02, 2025
Their support staff is knowledgeable, courteous, and always willing to assist.
de desembre 02, 2025
Customer service was attentive and proactive, ensuring all my concerns were addressed.
de desembre 02, 2025
We appreciate their dedication to maintaining high stock levels and providing timely support.
de desembre 02, 2025
Their shipping service is consistently prompt, which I greatly appreciate.
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Frequently Asked Questions (FAQ)
Can the MC908GT16CBE be safely replaced with a newer HC08 or HCS08 variant in an existing through-hole design without firmware changes?
The MC908GT16CBE is now obsolete, and while pin-compatible successors like the MC908GT32CBE or MC9S08QG8 exist, direct replacement isn't guaranteed due to differences in flash programming algorithms, peripheral register mappings, and interrupt vector layouts. Even within the HC08 family, memory size and peripheral enhancements (e.g., additional timers or ADC resolution) can break legacy code. Always verify bootloader compatibility and recompile firmware using the latest CodeWarrior or MCUXpresso SDK targeting the new device. For drop-in replacement, consider the MC68HC908GT8A, which maintains near-identical instruction timing and I/O structure, but test brown-out reset behavior under 3.3V operation—unlike the MC908GT16CBE, some variants have stricter LVD thresholds that may cause unintended resets in noisy environments.
What are the real-world risks of using the internal oscillator of the MC908GT16CBE in precision timing applications like motor control or UART communication?
The MC908GT16CBE’s internal RC oscillator has a typical accuracy of ±2% over the full temperature and voltage range (2.7V–5.5V, -40°C to 85°C), which exceeds the ±3% tolerance often acceptable for asynchronous UART at 9600 bps but becomes problematic at higher baud rates (e.g., 115200 bps) or in multi-node SPI daisy chains where clock drift accumulates. For motor control using PWM, this drift can cause audible noise or inconsistent duty cycle over temperature swings. If timing-critical, use an external ceramic resonator or crystal with load capacitors matched to the oscillator circuit—bypassing the internal oscillator entirely. Note that enabling the internal oscillator trim register (OSCTRIM) can improve accuracy slightly, but calibration must be done per unit during production, adding cost and complexity.
Is it safe to operate the MC908GT16CBE at 5.5V continuously in an industrial environment with voltage transients, and how does this affect long-term reliability?
While the MC908GT16CBE is rated for 2.7V to 5.5V continuous operation, sustained exposure to 5.5V—especially in industrial settings with inductive load switching or poor regulation—increases electromigration risk in the 8-bit core and flash memory cells, potentially reducing data retention life below the typical 10-year specification. Additionally, the absence of built-in ESD protection beyond basic HBM levels means transient spikes on I/O lines (common in 42-PDIP through-hole layouts with long traces) can degrade gate oxides over time. Mitigate this by adding TVS diodes on critical lines (e.g., SCI_RX, reset) and using a regulated 5.0V supply with <50mV ripple. For mission-critical designs, derate to 5.0V nominal and ensure ambient temperature stays below 70°C to maximize MTBF, as junction temperature directly impacts flash endurance.
How does the MC908GT16CBE compare to the Microchip PIC16F877A for a cost-sensitive 8-bit control application requiring 16KB flash and 36 I/Os?
The MC908GT16CBE offers tighter integration with built-in LVD, POR, and an 8-channel 8-bit ADC, whereas the PIC16F877A requires external components for reliable brown-out detection and has only a 5-channel 10-bit ADC. However, the PIC16F877A runs at 20MHz (vs. 8MHz on the MC908GT16CBE), enabling faster ISR response and better PWM resolution. Crucially, the PIC uses Harvard architecture with single-cycle instruction execution (except branches), while the MC908GT16CBE’s von Neumann architecture incurs wait states during flash access. For legacy systems already using HC08 toolchains, sticking with the MC908GT16CBE reduces migration risk, but for new designs, the PIC16F877A provides better performance per MHz and wider compiler support. Beware: the PIC16F877A is also nearing end-of-life, so consider modern alternatives like the PIC16F18313 if long-term availability is a concern.
What design precautions are needed when routing the 42-PDIP package of the MC908GT16CBE on a two-layer PCB to avoid noise coupling into the 8-bit ADC inputs?
The MC908GT16CBE’s 8-bit ADC lacks differential inputs or internal shielding, making it highly susceptible to digital noise—especially in a 42-PDIP layout where analog and digital pins are interleaved (e.g., PTA0/AN0 adjacent to high-speed SPI lines). Route all analog traces (ADC inputs, VREF) on the top layer with grounded guard rings and avoid running them parallel to clock or PWM signals. Use a dedicated analog ground plane connected to the digital ground at a single point near the MCU’s VSS pin. Power the MCU with a local 100nF ceramic capacitor placed within 5mm of VDD/VSS pins, and consider adding a 10Ω resistor in series with VDD to the analog section to isolate supply noise. Since the MC908GT16CBE has no separate AVCC pin, ensure the main VDD is clean; a ferrite bead + 1µF capacitor filter can help. Always sample during idle CPU cycles and discard the first conversion after wake-up to avoid startup inaccuracies.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MC908GT16CBE CAD Models
NXP USA Inc. MC908GT16CBE PCB symbols & footprints
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