NXP Semiconductors SCC2692AC1N40,602

Overview

SCC2692AC1N40,602 from NXP Semiconductors (formerly Philips) is a dual-channel CMOS-LSI asynchronous receiver/transmitter (DUART) with independent programmable baud rate control per channel, quadruple receiver buffering, and integrated 16-bit counter/timer. It operates from a single +5 V supply, supports TTL-compatible microprocessor bus interfacing, and delivers up to 1 MB/sec data transfer in 1X mode. It is used in industrial terminal systems requiring dual-speed serial communication with hardware flow control.

For engineers reviewing the SCC2692AC1N40,602 datasheet, SCC2692AC1N40,602 pinout, SCC2692AC1N40,602 application, or SCC2692AC1N40,602 equivalent, key selection considerations include independent Rx/Tx baud rate configuration, multidrop wake-up capability, receiver timeout mode, and 40-pin DIP package compatibility with legacy embedded control designs.

Technical Context

The SCC2692AC1N40,602 implements two fully independent UART channels sharing a common 8-bit bidirectional data bus, address decoding (A0–A3), and interrupt logic (INTRN). Each channel features separate mode registers (MRA/MSB, CRA/CRB), status registers (SRA/SRB), and control logic enabling simultaneous full-duplex operation at different data formats and baud rates.

Its timing architecture integrates an on-chip crystal oscillator (X1/CLK, X2), a 23-rate baud rate generator, and a 16-bit counter/timer configurable as timer, counter, or receiver timeout monitor. Clock selection logic allows each Rx/Tx to source timing independently from BRG output, C/T output, or external 1X/16X clocks applied to IP3–IP6 pins.

Key Specifications

Pinout & Package

SCC2692AC1N40,602 is housed in a 40-pin plastic dual in-line package (DIP), SOT129-1, with 0.6-inch body width and standard 0.1-inch pin pitch. Pin 1 is marked by a notch or dot; pin numbering follows standard DIP convention (counterclockwise from top-left corner).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual UART applications.

Compared with SCN2681ACZ, SCC2692AC1N40,602 adds counter/timer, receiver timeout, and multidrop support - critical for modern industrial control. Compared with TL16C550CP, it trades FIFO depth for integrated crystal oscillator and simpler power sequencing, favoring cost-sensitive, space-constrained embedded systems.

Availability

SCC2692AC1N40,602 is available at Aetrix Electronics and suitable for industrial terminal controllers, legacy POS system interfaces, and embedded modem adapters requiring stable component supply, long-lifecycle support, and through-hole manufacturability.

Supply support for SCC2692AC1N40,602 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, formerly Philips Semiconductors, is a global leader in high-reliability analog and mixed-signal ICs for industrial, automotive, and communications applications.

The SCC2692AC1N40,602 belongs to NXP's legacy communications interface product line, designed specifically for robust, low-power dual UART functionality in resource-constrained embedded systems with legacy 5 V bus architectures.

FAQ

What is the maximum operating temperature range for the SCC2692AC1N40,602?

The SCC2692AC1N40,602 is rated for commercial operation from 0 °C to +70 °C. Its absolute maximum junction temperature is +150 °C, and derating begins above +25 °C at 24 mW/°C. This range suits office equipment, light-industrial HMIs, and non-critical embedded systems where ambient thermal management is controlled.

Does the SCC2692AC1N40,602 support hardware flow control?

Yes, the SCC2692AC1N40,602 supports full hardware flow control via dedicated RTS/CTS signals: OP0/OP1 serve as active-low request-to-send outputs, while IP0/IP1 function as active-low clear-to-send inputs. These can be automatically deasserted upon transmit/receive completion, reducing software overhead in real-time serial protocols.

Can the SCC2692AC1N40,602 operate without an external crystal?

No - the SCC2692AC1N40,602 requires either a 3.6864 MHz crystal connected across X1/CLK and X2, or an external clock signal applied to X1/CLK. The on-chip oscillator is not functional without one of these sources; operation ceases if clock input stops, and no internal RC oscillator is provided.

How many interrupt sources does the SCC2692AC1N40,602 provide?

The SCC2692AC1N40,602 provides eight maskable interrupt sources routed to a single active-low open-drain INTRN output: RxRDY, TxRDY, break detect, framing error, parity error, overrun error, counter/timer event, and input port change. Additionally, OP3–OP7 can be configured as discrete wire-ORable interrupt outputs for priority-based handling.

Is the SCC2692AC1N40,602 pin-compatible with the SCN2681 series?

Yes - the SCC2692AC1N40,602 is functionally and pin-compatible with the SCN2681ACZ in the 40-pin DIP package. Register mapping, pin functions, and electrical characteristics match, allowing direct replacement where enhanced features like counter/timer or receiver timeout are not required.