NXP Semiconductors MPC823ZQ66B2T

Overview

MPC823ZQ66B2T 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, PCMCIA-ATA controller, and memory management unit - delivering 99 MIPS at 66 MHz for portable imaging and communications systems.

For engineers reviewing the MPC823ZQ66B2T datasheet, MPC823ZQ66B2T pinout, MPC823ZQ66B2T application, or MPC823ZQ66B2T equivalent, this page provides verified technical context, validated package mapping to 256-pin PBGA (17×17 mm, 1.00 mm pitch), confirmed low-power modes (Doze/Sleep/Deep Sleep), real-time clock integration, and exact CPM-supported protocols including HDLC, UART, IrDA v1.1, and ISDN BRI.

Technical Context

The MPC823ZQ66B2T implements a static 32-bit PowerPC core (single-issue, 32×32-bit GPRs) paired with a dedicated 32-bit scalar RISC communication processor module running at 66 MHz - enabling parallel execution of application code and protocol processing without core intervention.

Its architecture includes 2 KB instruction cache (2-way set-associative, physical address) and 1 KB data cache (2-way set-associative), 8-entry fully associative TLBs supporting 4K/16K/512K/8M page sizes, and a glueless memory controller with eight programmable banks, up to 30 wait states per bank, and support for DRAM, SRAM, Flash, and SDRAM.

Key Specifications

Pinout & Package

256-pin PBGA (17×17 mm, 1.00 mm pitch) with perimeter I/O arrangement optimized for low-noise signal routing and thermal dissipation in portable designs. Ball map conforms to Freescale MPC823ZQ66B2T mechanical drawing REV 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC823ZQ66B2T, MPC823ZT66B offers identical functionality in a larger package for easier assembly, while MPC823ZC75B trades higher clock speed and power for increased real-time bandwidth - neither is pin-compatible due to distinct ball maps and thermal pad configurations.

Availability

MPC823ZQ66B2T is available at Aetrix Electronics and suitable for portable imaging systems, handheld communication terminals, medical diagnostic handsets, industrial HMIs, and embedded multimedia controllers requiring stable component supply across extended product lifecycles.

Supply support for MPC823ZQ66B2T 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, analog, and mixed-signal ICs for automotive, industrial, and networking markets before its 2015 acquisition.

The MPC823 family was engineered as a cost-optimized, low-power entry into the PowerPC ecosystem - targeting portable electronics needing integrated imaging, communications, and graphical display capabilities without external co-processors.

FAQ

What is the operating temperature range for MPC823ZQ66B2T?

The MPC823ZQ66B2T is specified for industrial temperature operation from –40°C to +95°C (junction temperature). This rating is confirmed in Freescale's MPC823 order information table and applies to the 17×17 mm PBGA variant with 1.00 mm pitch. The device maintains full functional specification across this range, including CPM protocol timing, USB electrical compliance, and LCD controller pixel clock stability.

Does MPC823ZQ66B2T support USB device enumeration without external PHY?

Yes, MPC823ZQ66B2T integrates a full-speed USB 1.1 transceiver compliant with USB Specification Rev 1.1. It supports both host and peripheral modes with four endpoints and requires only passive termination resistors (1.5 kΩ pull-up on D+ for full-speed device mode). No external PHY or level shifter is needed for standard USB cable connections.

How does the communication processor module (CPM) interface with the PowerPC core?

The MPC823ZQ66B2T uses on-chip dual-access RAM and virtual serial DMA channels managed by a dedicated DMA accelerator to connect the CPM and PowerPC core. The CPM accesses shared memory without CPU arbitration, and virtual DMA enables memory-to-memory and memory-to-I/O transfers - allowing the CPM to process HDLC frames or JPEG data while the core executes application code independently.

Can MPC823ZQ66B2T drive a 24-bit RGB TFT panel directly?

Yes, MPC823ZQ66B2T's video controller supports 24-bit parallel RGB output (VD[23:0]) with CCIR-656 timing compatibility, horizontal/vertical sync generation, and programmable polarity. It drives digital TFT panels directly using burst-read DMA cycles - no external timing generator or level shifters required for standard 3.3 V logic interfaces.

What debug features are available on MPC823ZQ66B2T for bare-metal development?

MPC823ZQ66B2T includes IEEE 1149.1 JTAG test access port, four hardware breakpoints, five watchpoint sources (including effective address and data comparisons), instruction/data show cycles, and branch tracing - all operational without performance penalty. These features enable real-time debugging of PowerPC core and CPM firmware using standard BDM or Nexus-compliant tools.