Cantara/nuvoton

Nuvoton Technology Manufacturer Skill

MPN Structure

Nuvoton has multiple product families with different MPN structures:

ARM Cortex-M MCUs (NUC, M-series)

NUC[SERIES][LINE][PIN][FLASH][PKG][TEMP][VER]
│     │      │    │     │      │    │     │
│     │      │    │     │      │    │     └── Version (0, 1, etc.)
│     │      │    │     │      │    └── Temperature (N=normal, A=automotive)
│     │      │    │     │      └── Package type (A=QFN, etc.)
│     │      │    │     └── Flash size code
│     │      │    └── Pin code (LD=48, SD=64, VD=100, ZD=144)
│     │      └── Line number (23, 40, etc.)
│     └── Series (1=Cortex-M0, 2=Cortex-M0)
└── NuMicro prefix

M[LINE][PIN][FLASH][PKG]
│  │    │     │      │
│  │    │     │      └── Package code (AE=LQFP-48)
│  │    │     └── Flash size code
│  │    └── Pin code (LD=48, SD=64, LG=100, KI=128)
│  └── Line number (031=entry, 451=motor, 480=high-perf)
└── M-series prefix

Example Decoding

NUC123LD4AN0
│  │  │ │││││
│  │  │ ││││└── Version 0
│  │  │ │││└── Temperature N (normal)
│  │  │ ││└── Package A (QFN)
│  │  │ │└── Flash 4 (64KB)
│  │  │ └── Pin LD (LQFP-48)
│  │  └── Line 23
│  └── Series 1 (Cortex-M0)
└── NUC prefix

M451LG6AE
│  │ │ ││
│  │ │ │└── Package E (LQFP variant)
│  │ │ └── Package A (LQFP)
│  │ └── Flash 6 (512KB)
│  └── Pin LG (LQFP-100)
└── M451 series (Cortex-M4 motor control)

---

Package Codes

NUC Series Pin Codes

| Code | Package | Pin Count | |------|---------|-----------| | LD | LQFP-48 | 48 | | LE | LQFP-48 | 48 | | SD | LQFP-64 | 64 | | SE | LQFP-64 | 64 | | VD | LQFP-100 | 100 | | VE | LQFP-100 | 100 | | ZD | LQFP-144 | 144 | | AN | QFN-33 | 33 |

M-Series Pin Codes

| Code | Package | Pin Count | |------|---------|-----------| | LD | LQFP-48 | 48 | | LC | LQFP-48 | 48 | | SD | LQFP-64 | 64 | | SC | LQFP-64 | 64 | | LG | LQFP-100 | 100 | | VG | LQFP-100 | 100 | | KI | LQFP-128 | 128 | | ZG | LQFP-144 | 144 | | ZI | LQFP-144 | 144 |

8051 MCU Package Codes

| Code | Package | |------|---------| | AT | TSSOP-20 | | AS | SOP-20 | | AQ | QFN-20 | | FB | TSSOP-20 | | DA | TSSOP-16 | | BA | TSSOP-8 | | AE | LQFP-48 |

Audio Codec Package Codes

| Code | Package | |------|---------| | YG | QFN-32 | | YGB | QFN-32 | | LG | WLCSP | | G | QFN-48 |

---

Product Families

ARM Cortex-M MCUs

| Series | Core | Features | Max Clock | |--------|------|----------|-----------| | NUC1xx | Cortex-M0 | General purpose | 50MHz | | NUC2xx | Cortex-M0 | Enhanced peripherals | 72MHz | | M031 | Cortex-M0 | Entry-level | 48MHz | | M451 | Cortex-M4 | Motor control | 72MHz | | M480 | Cortex-M4 | High performance | 192MHz |

8051-Based MCUs

| Series | Core | Features | |--------|------|----------| | N76E003 | 8051 | Low-cost, small footprint | | MS51 | Enhanced 8051 | More peripherals |

Audio Codecs

| Series | Type | Features | |--------|------|----------| | NAU8810 | Mono Codec | Single input/output | | NAU8822 | Stereo Codec | Dual input/output | | NAU88L25 | Low Power Codec | Battery applications |

Security ICs

| Series | Type | Features | |--------|------|----------| | NPCT6xx | TPM 2.0 | Trusted Platform Module |

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Flash Size Encoding

NUC Series

| Code | Flash Size | |------|------------| | 2 | 16KB | | 3 | 32KB | | 4 | 64KB | | 5 | 128KB | | 6 | 256KB |

M-Series (Numeric)

| Code | Flash Size | |------|------------| | 2 | 32KB | | 3 | 64KB | | 4 | 128KB | | 5 | 256KB | | 6 | 512KB |

M480 Series (Letter)

| Code | Flash Size | |------|------------| | A | 128KB | | B | 256KB | | C | 384KB | | D | 512KB |

---

Handler Implementation Notes

Package Code Extraction

// NUC series: Pin code is after line number
// NUC123LD4AN0 -> LD determines package

// M-series: Pin code is after series number
// M451LG6AE -> LG determines package

// N76E series: Package code is 2-letter prefix of pin count
// N76E003AT20 -> AT = TSSOP, 20 = pins

Series Extraction

// NUC1xx and NUC2xx return generic series
if (upperMpn.matches("^NUC1\\d{2}.*")) return "NUC1xx";
if (upperMpn.matches("^NUC2\\d{2}.*")) return "NUC2xx";

// M-series returns exact line number
if (upperMpn.startsWith("M031")) return "M031";
if (upperMpn.startsWith("M451")) return "M451";
if (upperMpn.startsWith("M480")) return "M480";

// NAU88L must be checked before NAU88
if (upperMpn.matches("^NAU88L\\d{2}.*")) return "NAU88L";

Official Replacement Logic

// MCUs: Same series AND same pin count are replacements
// Audio Codecs: Same series are replacements (package variants OK)

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Related Files

• Handler: manufacturers/NuvotonHandler.java
• Component types: MICROCONTROLLER, IC

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Learnings & Edge Cases

• NUC vs M naming: NUC series uses full format (NUC123LD4AN0), M-series is shorter (M451LG6AE)
• N76E003 popularity: Most popular Nuvoton 8051 MCU due to low cost and Arduino compatibility
• NAU88L prefix: NAU88L25 must match before generic NAU88xx pattern
• M480 flash encoding: Uses letters (A-D) instead of numbers for flash size
• Pin code position varies: NUC at position 6, M-series at position 4, N76E at end of MPN
• TPM chips: NPCT6xx series are security ICs, not MCUs

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