NXP Semiconductors KMPC823VR81B2T

Overview

KMPC823VR81B2T from Freescale Semiconductor is a dual-processor embedded microprocessor integrating a 75 MHz PowerPC core and a dedicated communication processor module (CPM), with on-chip video/LCD controller, USB 1.1 host/slave interface, two SCCs, two SMCs, SPI, I²C, PCMCIA-ATA v2.1, and 8K dual-port RAM - designed for portable image capture and personal communication devices requiring low-power operation and glueless memory interfacing.

For engineers reviewing the KMPC823VR81B2T datasheet, KMPC823VR81B2T pinout, KMPC823VR81B2T application, or KMPC823VR81B2T equivalent, this page delivers verified technical context, validated pin-level functionality, real-world use cases in imaging and communications systems, and confirmed alternative options for migration or second sourcing.

Technical Context

The KMPC823VR81B2T implements a static 32-bit PowerPC core delivering 99 MIPS at 75 MHz (Dhrystone 2.1), with 2 KB instruction cache and 1 KB data cache, MMU supporting 4K–8M page sizes, and full little-/big-endian memory system support. Its CPM executes 75+ MIPS in parallel using a 32-bit Harvard RISC microcontroller with 16×16 MAC hardware and programmable microcode for HDLC, UART, IrDA 1.1, ISDN, and JPEG compression/decompression.

System integration includes a memory controller with eight banks, dynamic bus sizing (8/16/32-bit), up to 30 wait states per bank, and glueless interfaces to DRAM, SRAM, Flash, and SDRAM; plus a system interface unit providing JTAG debug, real-time clock, watchdog timer, PLL, and six power management modes (Normal High/Low, Doze, Sleep, Deep Sleep, Power-Down).

Key Specifications

Pinout & Package

Package: 256-ball PBGA, 17 mm × 17 mm, 1.00 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded communication processor applications.

Compared with KMPC823VR81B2T, MPC8245VRP40B trades integrated video and low-power CPM for raw CPU throughput and PCI, while MPC8313EVRAGDB abandons legacy serial protocol offload for modern security and networking features - making KMPC823VR81B2T uniquely suited for cost-sensitive, battery-operated imaging terminals requiring native display and protocol flexibility.

Availability

KMPC823VR81B2T is available at Aetrix Electronics and suitable for portable medical diagnostics, industrial handheld HMIs, and consumer imaging devices requiring stable component supply, long-lifecycle assurance, and legacy design continuity.

Supply support for KMPC823VR81B2T 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 RF solutions for automotive, industrial, and networking markets.

The MPC823 product line was engineered specifically for low-power mobile computing applications demanding integrated imaging, communication, and display control - targeting digital cameras, PDAs, and portable communication terminals before the smartphone era.

FAQ

What is the maximum operating frequency of the KMPC823VR81B2T?

The KMPC823VR81B2T operates at a maximum frequency of 75 MHz. This clock speed enables the embedded PowerPC core to deliver 99 MIPS (Dhrystone 2.1) with a 94% cache hit rate assumption. The communication processor module also runs at 75 MHz, achieving over 75 MIPS in parallel - confirmed in the MPC823TS/D technical summary and order information table.

Does the KMPC823VR81B2T include an integrated USB transceiver?

Yes, the KMPC823VR81B2T integrates a full-speed USB 1.1 transceiver supporting both host and peripheral modes at up to 12 Mbps with four endpoints. The USB_DP and USB_DM pins provide the differential pair directly - no external PHY is required. This is explicitly documented in the "One Dedicated High-Speed Serial Channel for the Universal Serial Bus (USB)" section of the MPC823TS/D datasheet.

Can the KMPC823VR81B2T drive both video encoders and LCD panels simultaneously?

No, the KMPC823VR81B2T's video/LCD controller shares common dual-port memory and supports only one active controller at a time - either video (NTSC/PAL encoder) or LCD (TFT/passive). The MPC823TS/D document states: "However, only one of the controllers can be run at a time." This architectural constraint prevents concurrent video output and LCD display from the same KMPC823VR81B2T instance.

What power management modes are supported by the KMPC823VR81B2T?

The KMPC823VR81B2T supports six distinct 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 - enabling background imaging or display updates. Full details appear in the "Power Management" section of the MPC823TS/D technical summary.

Is the KMPC823VR81B2T pin-compatible with other MPC823 variants like XPC823ZC75B?

Yes, KMPC823VR81B2T uses the same 256-ball PBGA package (17×17 mm, 1.00 mm pitch) as XPC823ZC75B and shares identical pinout, signal definitions, and electrical characteristics per the MPC823TS/D order information table. Both are rated for 0°C to 95°C operation and support 75 MHz operation - confirming mechanical and functional interchangeability within the same temperature grade.