MPC852TCVR66A - PowerQUICC 66MHz 32-Bit MPU | NXP
MPN： MPC852TCVR66A ✗ 停產MPC852TCVR66A 概覽
A microprocessor (MPU) is an integrated circuit that contains the central processing unit of a computer system, typically integrating core logic, memory interfaces, and peripheral controllers on a single die. Within the broader taxonomy, the MPC852T belongs to the communications-processor sub-class of microprocessors, itself a branch of microcontrollers and embedded processors. PowerQUICC devices sit in the hierarchy MPU -> embedded processor -> Power Architecture -> communications processor -> networking SoC, providing a tailored solution for line-card and edge-router designs where deterministic I/O handling and fast serial turnaround are more critical than raw CPU throughput.
Key specifications include a 1.8 V core with 3.3 V I/O (5 V TTL tolerant), a 32-bit data bus, integrated memory controller supporting DRAM, SRAM, EPROM, and Flash, and a 0.18-micron CMOS process. The device delivers two SCC channels supporting protocols such as Ethernet, HDLC, and UART, plus an SMC for management-plane serial links. The CPM offloads protocol processing from the embedded core, freeing the Power Architecture core for control-plane tasks.
Architecture-wise, the MPC852T is a 0.18-micron derivative of the MPC860 PowerQUICC family. It can operate the MPC8xx core up to 100 MHz on related variants while the bus runs at 66 MHz on the part-number suffix '66A', which denotes the 66 MHz speed grade. The dual-voltage design (1.8 V core / 3.3 V I/O) reduces power consumption compared with the older 2.5 V-core MPC860 while preserving 5 V TTL compatibility for legacy glue logic.
Typical applications include Ethernet-to-Ethernet line cards, telecom edge equipment, industrial control and serial bridging, low-end routers, and protocol converters. Its integrated 10/100 MAC plus dual SCC make it especially well suited to compact communications designs that need multiple serial interfaces without an external PHY controller.
A key design consideration is power-supply sequencing: the 1.8 V core rail must be stable before the 3.3 V I/O rail, and POR (power-on reset) timing must be respected. Designers should also verify external bus loading because the 66 MHz bus is sensitive to trace length matching.
This page synthesizes distributor pricing, drop-in alternatives within the MPC8xx family, and practical design notes that go beyond the manufacturer datasheet alone.
直接替換替代品，適用於 MPC852TCVR66A — 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： MPC852TCVR66A （相同外形與佔位） — 差異在於 Operating Temperature, Package, Communications Module, RoHS Status, Series.
MPC852TVR100A
✅ 直接替換聯絡詢價
查看資料表 →MPC852TVR50A
✅ 直接替換聯絡詢價
查看資料表 →MPC852TZT66A
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MPC852TCVR66B
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC853TZT66A
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC852TCVR66A 最大額定值與電氣特性
| Series | PowerQUICC MPC8xx |
| Core Processor | MPC8xx 32-Bit |
| Core Speed | 66 MHz |
| External Bus Speed | 66 MHz |
| Number of Cores | 1 |
| Co-Processors/DSP | Communications Processor Module (CPM) |
| Serial Communication Controllers (SCC) | 2 |
| Serial Management Controllers (SMC) | 1 |
| Ethernet | 10/100 Mbps MAC |
| Core Voltage | 1.8 V |
| I/O Voltage | 3.3 V (5 V TTL tolerant) |
| 工作溫度 | -40 C to +100 C |
| 封裝 | 256-PBGA (23x23 mm) |
| 安裝類型 | Surface Mount |
| Process Technology | 0.18 micron CMOS |
| 生命週期狀態 | End of Life (per NXP product page) |
MPC852TCVR66A 256-pbga (23x23 mm) 腳位配置指南
MPC852TCVR66A（256-pbga (23x23 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： MPC852TCVR66A.
請參閱 資料表 以查看完整腳位配置。
典型應用
MPC852TCVR66A 適用於 6 應用s: Ethernet-to-Ethernet Line Card, Telecom Edge Equipment and DSLAM Line Cards, Industrial Serial Bridge and Protocol Converter, Low-End Branch Office Router, Protocol Converter / Gateway, Legacy Embedded Control with Networking.
Ethernet-to-Ethernet Line Card
The MPC852TCVR66A fits Ethernet-to-Ethernet line cards because it integrates a 10/100 Mbps Ethernet MAC plus two Serial Communications Controllers (SCC) inside the CPM, offloading protocol framing from the 32-bit Power Architecture core. With the core running at 66 MHz and the external bus also at 66 MHz, the device can sustain full-duplex 100 Mbps wire-rate Ethernet while still executing control-plane code on the embedded core. Unlike a discrete MAC + CPU design, the integrated CPM removes glue logic and reduces BOM. Place the device on a 4-layer FR-4 board with controlled-impedance 50 ohm traces to the PHY, and use 33 ohm series termination on the bus to damp reflections at 66 MHz.
推薦
Telecom Edge Equipment and DSLAM Line Cards
In telecom edge equipment such as small DSLAMs and aggregation line cards, the MPC852TCVR66A's dual SCC channels handle HDLC-framed E1/T1 or PPP-over-Ethernet traffic while the SMC runs a low-speed management serial link. The 1.8 V core plus 3.3 V I/O design reduces total system power versus the older 2.5 V-core MPC860, important for densely-populated central-office shelves. The CPM's per-channel DMA engines sustain wire-rate serial without burdening the embedded core. Maintain a single ground reference plane under the BGA and place 0.1 uF / 10 uF decoupling within 5 mm of every power pin to keep the 66 MHz bus clean.
推薦
Industrial Serial Bridge and Protocol Converter
Industrial serial bridges that convert between legacy RS-232/485 protocols and modern Ethernet benefit from the MPC852TCVR66A's two SCCs plus 10/100 Ethernet MAC on a single die. The 32-bit core runs user code at 66 MHz while the CPM handles framing in hardware, allowing deterministic latency for industrial protocols such as Modbus TCP. The device's -40 C to +100 C operating range covers most industrial cabinets and outdoor enclosures. Provide a watchdog timer in software and use the POR signal to ensure deterministic reset after brown-out events.
推薦
Low-End Branch Office Router
Low-end branch-office routers that need one Ethernet WAN port and one Ethernet LAN port, plus a serial console link, map directly onto the MPC852TCVR66A's MAC + 2 SCC + SMC topology. Running an RTOS or proprietary stack on the 66 MHz Power Architecture core is sufficient for firewall, NAT, and routing table work in small sites. The integrated memory controller glues directly to SDRAM and Flash, avoiding an external bridge chip. Use external bus arbitration to share the 66 MHz bus between SDRAM and Flash without contention stalls.
推薦
Protocol Converter / Gateway
Protocol converters that bridge HDLC, UART, and Ethernet traffic use the MPC852TCVR66A's three serial controllers (2 SCC + 1 SMC) plus the Ethernet MAC to map multiple physical-layer formats onto a single managed stream. The CPM's protocol-aware DMA moves bytes between the SCC FIFOs and memory with minimal CPU intervention, freeing the core to run the conversion state machine. The 66 MHz core is adequate for sub-1000-pps gateway rates. Use the SCC's HDLC mode with CRC-16 for legacy serial links to maximize noise immunity.
推薦
Legacy Embedded Control with Networking
Legacy embedded-control designs that already use a PowerQUICC platform and need to add 10/100 Ethernet can adopt the MPC852TCVR66A as the network-enabled successor without losing existing firmware investment. The Power Architecture core preserves the toolchain and RTOS choices of MPC860 designs, while the 1.8 V core reduces power draw. This makes the part attractive for migration of legacy boards where the existing PCB already accepts the 256-PBGA footprint. Validate DRAM timing parameters - the 0.18-micron silicon has tighter SDRAM tRCD requirements than the older 0.29-micron MPC860.
推薦
推薦產品摘要
工程參考資料，適用於 MPC852TCVR66A — 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 | MPC852TVR100A | MPC852TVR50A | MPC852TZT66A | MPC852TCVR66B | MPC853TZT66A |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 256-PBGA (23x23) | 256-PBGA (23x23) - same | 256-PBGA (23x23) - same | 256-PBGA (23x23) - same | 256-PBGA (23x23) - same | 256-PBGA (23x23) - same |
| Core Speed | 66 MHz | 100 MHz | 50 MHz | 66 MHz | 66 MHz | 66 MHz |
| External Bus Speed | 66 MHz | 66 MHz | 50 MHz | 66 MHz | 66 MHz | 66 MHz |
| Core / I/O Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V | 1.8 V / 3.3 V |
| SCC Channels | 2 | 2 | 2 | 2 | 2 | 2 |
| SMC Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Ethernet MAC | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Operating Temperature | -40 C to +100 C | -40 C to +100 C | -40 C to +100 C | -40 C to +100 C | -40 C to +100 C | -40 C to +100 C |
| Lifecycle Status | EOL | EOL | EOL | EOL | EOL | EOL |
主要差異化特點
- Balanced 66 MHz core / 66 MHz bus speed grade (對比MPC852TVR100A)
- Compact CPM peripheral set for line-card designs (對比MPC853TZT66A)
- Lower-power 1.8 V core versus older MPC860 family (對比MPC860-class predecessors)
設計說明
The MPC852TCVR66A requires a 1.8 V core rail and a 3.3 V I/O rail. Both supplies must ramp monotonically, and the 1.8 V rail must reach regulation before the 3.3 V rail to satisfy the internal POR circuit. Place a 22 uF bulk plus a 0.1 uF / 10 uF decoupling pair within 5 mm of each power pin. Estimated: at 66 MHz core and typical CPM activity, total 1.8 V core current is approximately 250 mA - derate for ambient and switching losses.
Use a 4-layer PCB with a continuous ground plane beneath the 256-PBGA to control the 66 MHz bus impedance. Route the external bus signals with matched length (+/- 1.5 mm) and 33 ohm series source termination on clock and strobe lines. Escape the BGA on the top layer with via-in-pad if the board house supports it; otherwise dog-bone fanout is acceptable for the 1.27 mm pitch. Place SDRAM as close as possible to reduce bus loading.
Do not assume the MPC852TCVR66A is in production. The NXP product page marks the part End of Life with a Discontinuance and Replacement PCN; new orders rely on distributor or broker stock. Verify long-term availability with a written PCN acknowledgment before committing to a new design. For new layouts, evaluate the QorIQ successor recommended by NXP rather than recycling this EOL part into a fresh program.
合規資訊
RoHS/lead-free status not captured in the verified web snippets - request the CoC from the distributor before placing the part in a regulated region.