NXP Semiconductors MPC823VR81B2T

Overview

MPC823VR81B2T from Freescale Semiconductor is a dual-processor embedded PowerPC microprocessor with integrated communication processor module (CPM), video/LCD controller, USB 1.1 host/slave interface, and PCMCIA-ATA controller. It delivers 99 MIPS at 75 MHz, supports 32-bit bus sizing, features 2K instruction and 1K data caches, and targets low-power portable imaging and personal communication devices.

For engineers reviewing the MPC823VR81B2T datasheet, MPC823VR81B2T pinout, MPC823VR81B2T application, or MPC823VR81B2T equivalent, key selection criteria include its 75 MHz operation, 256-pin PBGA package, dual-processor architecture enabling parallel signal processing, USB 1.1 endpoint support, and integrated LCD/video timing generation for TFT/NTSC/PAL displays.

Technical Context

The MPC823VR81B2T implements a static 32-bit PowerPC core (compatible with PowerPC Architecture Definition) alongside a dedicated 32-bit scalar RISC communication processor module. The CPM executes imaging and communication algorithms-including JPEG compression/decompression-concurrently with the main core using 8K dual-port RAM and twelve serial DMA channels.

Its system integration unit provides glueless memory interfacing across eight banks, supporting DRAM, SRAM, Flash, and SDRAM with up to 30 wait states per bank. The video/LCD controller shares dual-port memory but operates exclusively in either video (CCIR-656, NTSC/PAL) or LCD (TFT, passive, grayscale) mode-not simultaneously.

Key Specifications

Pinout & Package

Package: 256-ball plastic BGA (PBGA), 17 mm × 17 mm, 1.00 mm pitch - Compatible with standard surface-mount reflow processes and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded PowerPC microprocessor applications.

Compared with MPC823VR81B2T, MPC8245VR81B2T offers PCI and higher clock speed at the cost of increased power and layout complexity, while MPC8272VR81B2T provides cryptographic acceleration and USB 2.0 in the same footprint - making it the closest functional upgrade path for new designs requiring enhanced security or bandwidth.

Availability

MPC823VR81B2T is available at Aetrix Electronics and suitable for portable imaging systems, handheld communication terminals, medical handsets, industrial HMIs, and embedded video display applications requiring stable component supply and long-term lifecycle support.

Supply support for MPC823VR81B2T 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs, founded in 2004 as a spin-off from Motorola's semiconductor division.

The MPC823VR81B2T belongs to Freescale's PowerQUICC family of integrated communications processors, designed specifically for low-power, portable, image-capture, and personal communication products with tight BOM and thermal constraints.

FAQ

What is the maximum operating frequency of the MPC823VR81B2T?

The MPC823VR81B2T is rated for 75 MHz operation. At this frequency, it achieves 99 MIPS (Dhrystone 2.1) with a 94% cache hit rate. For frequencies above 50 MHz, the External Bus Division Factor (EBDF) must be set to 2 to maintain timing compliance. The device supports completely static operation from 0 to 75 MHz, allowing clock gating for power savings without loss of state.

Does the MPC823VR81B2T support USB 2.0?

No, the MPC823VR81B2T supports only USB 1.1 at up to 12 Mbps in host or slave mode with four endpoints. Its dedicated USB channel lacks the high-speed transceiver and protocol stack required for USB 2.0. For USB 2.0 functionality, consider the MPC8272VR81B2T, which replaces the USB 1.1 interface with dual USB 2.0 controllers while retaining the same 256-ball PBGA package.

Can the video and LCD controllers operate simultaneously on the MPC823VR81B2T?

No, the MPC823VR81B2T's video and LCD controllers share the same dual-port memory and cannot operate concurrently. The device must be configured at boot time to use either the video controller (for NTSC/PAL digital encoders or CCIR-656 interfaces) or the LCD controller (for TFT, STN, or grayscale panels). This mutual exclusion is enforced in hardware to prevent memory arbitration conflicts.

What power management modes does the MPC823VR81B2T support?

The MPC823VR81B2T supports six power modes: Normal High, Normal Low, Doze, Sleep, Deep Sleep, and Power-Down. In Doze mode, the PowerPC core is disabled but the CPM, LCD controller, memory controller, and real-time clock remain active - ideal for background display updates. Sleep mode disables the core and CPM but keeps the RTC and periodic timer running with PLL active for fast wake-up.

Is the MPC823VR81B2T pin-compatible with other MPC82x series devices?

The MPC823VR81B2T uses a 256-ball PBGA (17×17 mm, 1.00 mm pitch) package shared with MPC8272VR81B2T, enabling mechanical compatibility. However, electrical pin functions differ significantly - for example, MPC8272VR81B2T replaces USB 1.1 signals with USB 2.0 differential pairs and adds SEC-related pins. Therefore, MPC823VR81B2T is not pin-compatible with other MPC82x variants despite identical packaging.