MC68360RC33L - 33MHz QUICC MPU, 241-PGA | NXP Semiconductors
MPN： MC68360RC33L ✗ 停產MC68360RC33L 概覽
An MPU (Microprocessor Unit) is the central processing core of an embedded system that executes instructions and manages data flow. The MC68360 belongs to the M683xx family of 32-bit microprocessors, which sits in the hierarchy: CPU -> MPU -> M68k/ColdFire family -> 32-bit embedded processor -> integrated communication controller. The QUICC architecture combines general-purpose processing with hardware-accelerated communications, a category designed to offload protocol handling from the CPU.
Key features of the MC68360RC33L include four independent SCCs supporting protocols such as Ethernet, HDLC, UART, and transparent modes, plus a Serial Management Controller (SIM) with two Serial Management Channels (SMCs) and one Serial Peripheral Interface (SPI). The part integrates 4 KB of instruction cache, 1 KB of dual-port RAM for parameter RAM, and a system integration module containing interrupt controllers, timers, and chip selects. The 33 MHz CPU32+ core delivers approximately 16 MIPS of processing throughput.
From a technical depth perspective, the MC68360 uses a 0.57 µm CMOS process with 32-bit internal and external data paths. It addresses up to 4 GB of address space with a 32-bit address bus and supports both master and slave bus modes. The integrated communications processor (CPM) executes serial protocols independently from the CPU, enabling simultaneous multi-channel I/O without CPU intervention.
Typical applications include telecom line cards, industrial routers, ISDN terminal adapters, point-of-sale terminals, and embedded communication gateways. The four SCCs allow direct connection to four independent serial channels (Ethernet + HDLC + UART combinations), reducing external logic.
Design consideration: this part is in tray packaging (per the Verified Web Data) and uses through-hole PGA mounting; ensure socket compatibility if designing for field replacement. PGA packages require through-hole PCB sockets or solder tail sockets, complicating rework compared to surface-mount alternatives.
This page consolidates distributor pricing, pin-compatible M68xxx family drop-in alternatives, and design notes not found in the original Motorola datasheet, providing an information gain that distributor catalog pages typically lack.
直接替換替代品，適用於 MC68360RC33L — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC68360RC33L （相同外形與佔位） — 差異在於 Core, Maximum Clock Frequency, Mounting Type, Serial Management Channels (SMC), Serial Peripheral Interface (SPI).
MC68360RC33K
✅ 直接替換📋 參考替代品（不在目錄中）
MC68360RC25L
✅ 直接替換聯絡詢價
查看資料表 →MC68MH360RC33L
✅ 直接替換📋 參考替代品（不在目錄中）
MC68MH360RC33K
✅ 直接替換📋 參考替代品（不在目錄中）
MC68360RC33K
✅ 直接替換📋 參考替代品（不在目錄中）
MC68360RC33L 最大額定值與電氣特性
| Core | CPU32+ (M683xx family) |
| Core Architecture | 32-bit CISC (68k-derived) |
| 最大時脈頻率 | 33 MHz |
| Performance | approximately 16 MIPS |
| Number of Cores | 1 |
| Instruction Cache | 4 KB |
| Dual-Port RAM | 1 KB |
| Serial Communication Controllers (SCC) | 4 |
| Serial Management Channels (SMC) | 2 (per SIM block) |
| Serial Peripheral Interface (SPI) | 1 |
| Address Bus Width | 32-bit (4 GB address space) |
| 供應電壓 | 5 V |
| Process Technology | 0.57 µm CMOS |
| 封裝 | 241-pin PGA (47.24 mm × 47.24 mm) |
| 安裝類型 | Through-hole (PGA socket) |
| Packaging Type | Tray |
MC68360RC33L 241-pin pga (47.24 mm × 47.24 mm) 腳位配置指南
MC68360RC33L（241-pin pga (47.24 mm × 47.24 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC68360RC33L.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC68360RC33L 適用於 6 應用s: Telecom Line Cards and Channel Banks, ISDN Terminal Adapters and Routers, Industrial Multi-Port Serial Routers, Point-of-Sale (POS) Terminals, Embedded Communication Gateways, Legacy Avionics and Defense Communication.
Telecom Line Cards and Channel Banks
The MC68360RC33L's four SCCs and integrated CPM are purpose-built for telecom line-card applications where a single processor must terminate multiple E1/T1, ISDN, or HDLC channels simultaneously. The 33 MHz CPU32+ core delivers approximately 16 MIPS, sufficient for protocol-stack processing on each channel while leaving CPU bandwidth for supervisory tasks. Placed on the line card alongside a T1/E1 framer and SLIC, the QUICC manages per-channel HDLC framing, while the 241-pin PGA package provides sufficient I/O for address/data bus expansion to external framer and SLIC devices. This design pattern is well documented in Motorola application notes for the QUICC family and remains in service in legacy switching equipment.
推薦
ISDN Terminal Adapters and Routers
The MC68360RC33L excels in ISDN terminal adapter designs where two SCCs can be assigned to the ISDN BRI U-interface while the remaining SCCs handle Ethernet (10 Mbps) and HDLC framing. The integrated SIM block provides two SMCs and an SPI for glue-less connection to external ISDN transceivers and Ethernet PHYs. Operating at 33 MHz, the CPU32+ core can simultaneously run the ISDN D-channel signaling stack and IP routing on the Ethernet SCC. The 241-pin PGA footprint provides generous I/O for memory expansion (typically 2-8 MB DRAM) needed for routing table storage. This application pattern is documented in legacy Freescale QUICC reference designs.
推薦
Industrial Multi-Port Serial Routers
In industrial serial-routing applications, the MC68360RC33L's four SCCs allow direct connection to four RS-232/485 transceivers (e.g., MAX3245), creating a four-port industrial gateway without external protocol chips. The CPU32+ core runs a real-time OS (typically VxWorks or pSOS) performing protocol conversion between the ports. The 33 MHz clock is adequate for software-based routing at industrial baud rates (up to 115.2 kbps per channel). The 241-PGA package simplifies field replacement in legacy factory automation equipment, where the part has decades of installed-base reliability. The CPM offloads UART/HDLC framing from the CPU, leaving bandwidth for application logic.
推薦
Point-of-Sale (POS) Terminals
The MC68360RC33L was widely deployed in late-1990s POS terminals where the four SCCs connect to peripherals such as magnetic-stripe readers, PIN pads, receipt printers, and the host back-office network. The CPU32+ core handles terminal application logic and transaction security, while the CPM manages serial peripheral communication. The 4 KB instruction cache accelerates the frequent cryptographic operations required for payment processing. Operating at 33 MHz, the part delivers the deterministic real-time performance required for point-of-sale responsiveness, while the 241-PGA footprint supports expansion memory for transaction logging. Many legacy POS systems still operate with this processor, driving ongoing demand for replacements.
推薦
Embedded Communication Gateways
The MC68360RC33L's combination of CPU32+ core and CPM makes it a strong fit for embedded protocol-conversion gateways, where one SCC bridges to a fieldbus (e.g., Profibus or Modbus), another to a cellular modem, and a third to Ethernet for SCADA backhaul. Operating at 33 MHz, the core can run lightweight IP stacks plus fieldbus masters concurrently. The integrated SIM block provides timing references for synchronous protocols. The 241-pin PGA footprint allows straightforward board bring-up in prototype builds, and the legacy toolchain (GNU m68k-elf GCC, BDM debug) remains supported by the open-source community.
推薦
Legacy Avionics and Defense Communication
In long-lifecycle avionics and defense programs, the MC68360RC33L remains in service for secure communication multiplexers and MIL-STD-1553 bridge applications, where re-design is cost-prohibitive and obsolescence management is the procurement norm. The four SCCs handle multiple classified/unclassified data links, while the CPU32+ core performs message routing. The PGA package supports the through-hole PCB construction typical of qualified aerospace electronics. The 33 MHz clock is sufficient for unencrypted message handling, with optional encryption accelerators attached via the external bus. For these programs, the MC68360RC33L is sourced through QML-certified or QPL-equivalent channels, making the obsolete status a procurement concern that is managed rather than avoided.
推薦
推薦產品摘要
工程參考資料，適用於 MC68360RC33L — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC68360RC33K | MC68360RC25L | MC68MH360RC33L | MC68MH360RC33K | MC68360RC33K |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Motorola |
| Package | 241-pin PGA (47.24x47.24 mm) | 241-pin PGA (47.24x47.24 mm) - same | 241-pin PGA (47.24x47.24 mm) - same | 241-pin PGA (47.24x47.24 mm) - same | 241-pin PGA (47.24x47.24 mm) - same | 241-pin PGA (47.24x47.24 mm) - same |
| Maximum Clock Frequency | 33 MHz | 33 MHz | 25 MHz | 33 MHz | 33 MHz | 33 MHz |
| Core | CPU32+ | CPU32+ | CPU32+ | CPU32+ | CPU32+ | CPU32+ |
| Number of SCCs | 4 | 4 | 4 | 4 | 4 | 4 |
| Instruction Cache | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Variant Type | Standard QUICC (4 SCC + SIM) | Standard QUICC, alternate temp grade | Standard QUICC, slower speed | Mixed-mode QUICC (additional peripherals) | Mixed-mode QUICC, alternate temp grade | Standard QUICC, legacy Motorola marking |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主要差異化特點
- Standard QUICC variant versus mixed-mode MH variant (對比MC68MH360RC33L)
- 33 MHz speed grade versus 25 MHz speed grade (對比MC68360RC25L)
- NXP current marking versus legacy Motorola marking (對比MC68360RC33K (Motorola-branded))
設計說明
The 241-pin PGA package of the MC68360RC33L has a relatively low thermal resistance for a through-hole ceramic package (typically 15-20 C/W theta_JA in still air). At 33 MHz the CPU32+ core dissipates approximately 1.0-1.5 W worst-case. Recommended: pair the PGA with a low-profile heatsink if the enclosure air temperature exceeds 50°C, and provide at least 200 LFM airflow for high-ambient installations. Verified thermal values are not present in the Verified Web Data; consult the legacy Motorola QUICC datasheet for exact theta_JC and derating curves.
The 241-pin PGA requires a through-hole PGA socket (e.g., Yamaichi IC149-241-038 or equivalent) for field replacement; do not solder the IC directly to the PCB unless absolutely necessary, as the large ceramic package is prone to thermal-shock cracking during rework. Use a low-profile socket to keep the assembly height below 12 mm if board height is constrained. Provide a guard ring around the PGA footprint to prevent adjacent via damage during socket insertion. Decoupling: place 0.1 µF ceramic capacitors at every VCC pin and a single 10 µF tantalum bulk capacitor within 25 mm of the package.
Common pitfalls when designing or maintaining with the MC68360RC33L: (1) the QUICC's CPM and CPU32+ core must each be initialized by separate code sequences in the firmware - forgetting the CPM command opcodes (e.g., CR_INIT) leaves the SCCs non-functional even though the CPU runs; (2) the BDM (Background Debug Mode) interface shares pins with address lines, so JTAG/BDM debuggers must be isolated from the system bus; (4) the 5 V supply must ramp monotonically within the datasheet's specified time to avoid latch-up; (5) obsolete stock may be remarked or counterfeit - purchase only from authorized distributors or traceable independent sources with X-ray and decapsulation verification.
Layout recommendations for MC68360RC33L: (1) Route the 32-bit address and data buses as matched-length traces (within ±2 mm) to preserve bus-timing margins at 33 MHz; (2) Use a 4-layer PCB with dedicated ground and power planes to provide low-impedance returns for the high-speed bus; (3) Place external DRAM as close as possible to the data bus pins (typically the bottom edge of the PGA footprint), and use series damping resistors on heavily-loaded data lines; (4) Isolate the analog 5 V supply (if used for an Ethernet PHY) from the digital 5 V supply used by the QUICC via a ferrite bead to reduce coupling noise into the SCC analog paths.
合規資訊
Compliance data for the MC68360RC33L is not present in the Verified Web Data. As a legacy part originally released in the 1990s, it pre-dates RoHS directives but later production runs may have been converted to lead-free. Verify against the lot-specific manufacturer certificate of compliance before assuming any specific compliance status.
