NXP Semiconductors MPC8306SCVMACDCA

Overview

MPC8306SCVMACDCA from NXP Semiconductors (formerly Freescale) is a PowerQUICC II Pro integrated communications processor built on Power Architecture® technology, featuring an e300c3 core with 16 KB instruction and 16 KB data caches, dual integer units, and MMU support. It integrates a 16-bit DDR2 SDRAM controller (266 MHz data rate), five Unified Communication Controllers (UCCs) supporting 10/100 Mbps Ethernet via MII/RMII, HDLC, and TDM, and a QUICC Engine™ block with 48 KB instruction RAM and 16 KB multiuser RAM. It targets residential gateways and industrial control systems requiring deterministic real-time protocol handling.

For engineers reviewing the MPC8306SCVMACDCA datasheet, MPC8306SCVMACDCA pinout, MPC8306SCVMACDCA application, or MPC8306SCVMACDCA equivalent, key selection considerations include its 133–333 MHz e300c3 core frequency range, 1.0 V ±50 mV core supply requirement, 1.8 V DDR2 I/O voltage, 3.3 V general-purpose I/O voltage, and support for boot from parallel NOR/NAND Flash - all critical for embedded networking hardware design and migration from legacy PowerQUICC platforms.

Technical Context

The MPC8306SCVMACDCA implements a dual-domain clock architecture: the e300c3 core operates at up to 333 MHz using a dedicated PLL driven by SYS_CLK_IN (24–66.67 MHz), while the QUICC Engine runs independently at up to 233 MHz with its own PLL - enabling power-optimized concurrent processing of network protocols and application code. Its DDR2 controller supports 14 address lines, two chip selects, and up to 2-Gbit x16 devices with auto-refresh and CKE-based power management.

The device uses a hierarchical interrupt system via the Integrated Programmable Interrupt Controller (IPIC), offering six priority groups and vectorized routing for both internal peripherals (UCCs, USB, DUART, timers) and external sources. All five UCCs are software-configurable for MII/RMII Ethernet, HDLC, or TDM - with TDM supporting up to 128 channels at 64 kbps each - and share access to the QUICC Engine's serial DMA engines for zero-copy packet handling.

Key Specifications

Pinout & Package

Package: 620-ball plastic ball grid array (PBGA), 35 mm × 35 mm body, 1.0 mm ball pitch, RoHS-compliant lead-free finish. Thermal pad on underside requires solder paste stencil opening and thermal via array for junction-to-board heat transfer.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar integrated communications processor applications.

Compared with MPC8306SCVMACDCA, MPC8308SCVMACDCA offers higher CPU headroom and PCIe expansion at identical package and peripheral compatibility, while MPC8313EVRAGDB trades UCC flexibility and DDR2 capability for SATA integration - making MPC8306SCVMACDCA optimal for balanced networking workloads requiring TDM, HDLC, and DDR2 in cost-constrained designs.

Availability

MPC8306SCVMACDCA is available at Aetrix Electronics and suitable for residential gateways, industrial Ethernet bridges, and test & measurement instruments requiring stable component supply, long-term lifecycle assurance, and qualified industrial-temperature grade silicon.

Supply support for MPC8306SCVMACDCA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep heritage in Power Architecture® processor design through its acquisition of Freescale Semiconductor.

The MPC8306SCVMACDCA belongs to the PowerQUICC II Pro family, engineered specifically for cost-sensitive, highly integrated communications equipment where deterministic real-time protocol processing, low-power operation, and compact board footprint are essential design requirements.

FAQ

What is the maximum DDR2 SDRAM capacity supported by the MPC8306SCVMACDCA?

The MPC8306SCVMACDCA supports up to 512 MB of DDR2 SDRAM - achieved using two chip selects, each addressing up to 256 MB with 16-bit data width. It accommodates 64-Mbit to 2-Gbit DDR2 devices in x8 or x16 configurations, but does not support x4 devices. The controller implements auto-refresh and on-the-fly CKE-based power-down, enabling low-power idle states without software intervention. MPC8306SCVMACDCA requires precise MVREF tracking (0.49×GVDD to 0.51×GVDD) and tight VTT regulation (±40 mV around MVREF) for reliable operation at 266 MT/s.

Does the MPC8306SCVMACDCA support booting from NAND Flash, and what interface modes are available?

Yes, the MPC8306SCVMACDCA supports booting from parallel NAND Flash via its Enhanced Local Bus Controller (eLBC), which includes a dedicated NAND Flash Control Machine (FCM). It supports 8-bit and 16-bit NAND interfaces with hardware ECC generation and correction for up to 4-bit errors per 512-byte sector. The FCM handles read/write/erase commands, bad-block management, and spare-area access without CPU involvement. MPC8306SCVMACDCA also supports boot from parallel NOR Flash using General-Purpose Chip Select Machine (GPCM) mode with configurable wait states and burst capability - providing flexibility for dual-boot or fail-safe firmware recovery schemes.

How many independent Ethernet interfaces can the MPC8306SCVMACDCA support simultaneously?

The MPC8306SCVMACDCA supports up to five independent 10/100 Mbps Ethernet interfaces simultaneously - one per Unified Communication Controller (UCC). Each UCC can be configured for MII or RMII physical layer interface, with full-duplex operation, IEEE 802.3 compliance, and hardware-accelerated features including VLAN tagging, pause frame generation, and CRC calculation/verification. All five UCCs operate concurrently without resource contention, as they connect directly to the QUICC Engine's serial DMA engines and share no common buffer or descriptor pool. MPC8306SCVMACDCA does not integrate a switch fabric; external PHYs and optional switch ICs are required for multi-port switching topologies.

What are the power sequencing requirements for reliable startup of the MPC8306SCVMACDCA?

MPC8306SCVMACDCA requires strict power sequencing: VDD (core) must reach 90% of its nominal value (1.0 V) before GVDD (DDR2 I/O) and OVDD (peripheral I/O) rise above 0.7 V. PORESET must remain asserted until both VDD and I/O supplies are stable, followed by a minimum 32-cycle delay after SYS_CLK_IN stabilization before negating PORESET. HRESET must then be held active for ≥32 SYS_CLK_IN cycles. Failure to follow this sequence risks I/O contention, excessive current draw, or incomplete register initialization. MPC8306SCVMACDCA has no mandatory power-down order, but recommends disabling clocks and entering doze mode before removing supplies.

Is the MPC8306SCVMACDCA pin-compatible with other PowerQUICC II Pro processors like the MPC8308 or MPC8313?

No, the MPC8306SCVMACDCA is not pin-compatible with MPC8308SCVMACDCA or MPC8313EVRAGDB. While all three use 620-ball PBGA packages with identical mechanical dimensions and ball pitch, their ball maps differ significantly - particularly in DDR2 signal allocation (MPC8308 adds differential DDR2 clocks), USB interface routing (MPC8313 uses different ULPI pins), and QUICC Engine clock inputs. Software is source-compatible within the PowerQUICC II Pro family due to shared e300c3 core and QUICC Engine architecture, but hardware redesign is required for migration. MPC8306SCVMACDCA's specific ball map is documented in Section 19 ("Package and Pin Listings") of its hardware specifications manual.