NXP Semiconductors KMC68360AI33L

Overview

KMC68360AI33L from NXP Semiconductors (formerly Freescale) is a quad integrated communications controller (QUICC) combining a 32-bit CPU32+ core, System Integration Module (SIM60), and Communications Processor Module (CPM) in a single LQFP-208 package. It delivers 33 MHz operation, dual-port RAM, and hardware-accelerated serial protocols including HDLC, UART, BISYNC, and transparent modes - enabling deterministic real-time communication control in industrial routers and telecom access equipment.

For engineers reviewing the KMC68360AI33L datasheet, KMC68360AI33L pinout, KMC68360AI33L application, or KMC68360AI33L equivalent, this page provides verified technical context, validated pin functions, confirmed timing parameters, documented CPM channel allocation, and two field-deployed alternative parts with explicit functional and packaging differences.

Technical Context

The KMC68360AI33L integrates a CPU32+ core executing M68000-family instructions at 33 MHz, with on-chip 4 KB dual-port RAM shared between CPU and CPM. Its SIM60 handles memory mapping, interrupt routing, and bus arbitration, while the CPM offloads serial protocol processing via four independent SCCs, two SMCs, and one SPI interface - all operating autonomously using microcode stored in internal RAM.

It supports synchronous and asynchronous serial communication with programmable baud rates up to 10 Mbps per SCC, IEEE 1149.1 JTAG test access, and glueless interfacing to SRAM, DRAM, and flash memory. The device operates from a single 5 V supply with separate analog/digital power domains (VCCSYN/GNDSYN, VCCCLK/GNDCLK) and includes dedicated reset logic with both hard (RESETH) and soft (RESETS) reset inputs.

Key Specifications

Pinout & Package

LQFP-208 package with exposed thermal pad (EP); 208-pin square lead frame, 0.5 mm pitch, 28 mm × 28 mm body size, JEDEC MS-026AC compliant. Thermal pad must be soldered to PCB ground plane for reliable operation at full frequency and temperature range.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad communications controller applications.

Compared with MPC860TVMH133D, KMC68360AI33L offers deterministic serial offload with zero software overhead but lacks integrated Ethernet; compared with MC68360ZP25L, it delivers 32% higher serial throughput and tighter jitter control - critical for time-sensitive industrial protocols.

Availability

KMC68360AI33L is available at Aetrix Electronics and suitable for industrial routers, telecom access nodes, point-of-sale terminals, and railway signaling controllers requiring stable component supply across extended product lifecycles.

Supply support for KMC68360AI33L 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's embedded processor heritage.

The KMC68360AI33L belongs to the QUICC family - designed specifically for deterministic, low-latency serial communications in mission-critical infrastructure where hardware-accelerated protocol handling and long-term supply stability are mandatory.

FAQ

What is the maximum baud rate supported by KMC68360AI33L's SCC channels?

KMC68360AI33L supports up to 10 Mbps per Serial Communication Controller (SCC) channel when operating at its rated 33 MHz frequency. This limit is derived from the CPM's internal clock division ratio and the minimum bit time achievable under HDLC or transparent mode configurations. Actual sustained data rates depend on external transceiver capabilities and line conditions, but the KMC68360AI33L itself guarantees correct framing and CRC handling up to this rate.

Does KMC68360AI33L include an integrated Ethernet MAC?

No, KMC68360AI33L does not include an integrated Ethernet MAC. It provides dedicated serial interfaces (SCCs, SMCs, SPI) and relies on external PHY/MAC chips for Ethernet connectivity. The CPM handles only serial-layer protocols such as HDLC, UART, and BISYNC; Ethernet frame processing must be implemented externally or in software on the CPU32+ core.

Can KMC68360AI33L operate with a 3.3 V supply?

No, KMC68360AI33L requires a nominal 5.0 V ± 5% supply across VCC, VCCSYN, and VCCCLK pins. It is not 3.3 V tolerant, and applying 3.3 V will prevent proper operation of the CPU32+ core, SIM60, and CPM. Level-shifting circuitry is required for interfacing with 3.3 V peripherals, but the KMC68360AI33L power domain itself must remain at 5 V.

How is dual-port RAM accessed by both CPU and CPM in KMC68360AI33L?

In KMC68360AI33L, the 4 KB dual-port RAM is mapped into both the CPU32+ address space (starting at 0x0000_0000) and the CPM's local address space (starting at 0x0000_0000 within CPM context). Arbitration is handled internally by the SIM60 module, allowing concurrent non-conflicting accesses - e.g., CPU writing packet headers while CPM reads payload data - with hardware-enforced collision avoidance on overlapping addresses.

Is JTAG debugging supported on KMC68360AI33L?

Yes, KMC68360AI33L fully supports IEEE 1149.1 JTAG boundary-scan via dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables in-circuit debugging, flash programming, and production test without halting CPU or CPM operation. The JTAG interface is documented in Section 8 of the MC68360 User's Manual and is functionally identical across all MC68360 variants including KMC68360AI33L.