SC16C652BIBS,157

1. General description

The SC16C652B is a 2 channel Universal Asynchronous Receiver and Transmitter

(UART) used for serial data communications. Its principal function is to convert parallel

data into serial data and vice versa. The UART can handle serial data rates up to 5 Mbit/s.

The SC16C652B is pin compatible with the SC16C2550. It will power-up to be functionally

equivalent to the 16C2450. The SC16C652B provides enhanced UART functions with

32-byte FIFOs, modem control interface, DMA mode data transfer, and IrDA

encoder/decoder. The DMA mode data transfer is controlled by the FIFO trigger levels

and the TXRDY and RXRDY signals. On-board status registers provide the user with error

2. Features

■ 2 channel UART

■ 5 V, 3.3 V and 2.5 V operation

■ 5 V tolerant inputs

■ Industrial temperature range (−40 °C to +85 °C)

■ Pin and functionally compatible to 16C2450 in LQFP48 package, and software

compatible with industry standard 16C450, 16C550, and SC16C650

■ Up to 5 Mbit/s data rate at 5 V and 3.3 V, and 3 Mbit/s at 2.5 V

■ 32-byte transmit FIFO to reduce the bandwidth requirement of the external CPU

■ 32-byte receive FIFO with error flags to reduce the bandwidth requirement of the

■ Standard modem interface or infrared IrDA encoder/decoder interface

■ Supports IrDA version 1.0 (up to 115.2 kbit/s)

■ Sleep mode

■ Standard asynchronous error and framing bits (Start, Stop, and Parity Overrun Break)

SC16C652B

5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.) with 32-byte

FIFOs and infrared (IrDA) encoder/decoder

Rev. 04 — 1 September 2005 Product data sheet

SC16C652B_4 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.

Product data sheet Rev. 04 — 1 September 2005 2 of 43

◆ Even, odd, or no-parity formats

◆ 1, 1

⁄

◆ Baud generation (DC to 5 Mbit/s)

■ False start-bit detection

■ Complete status reporting capabilities

■ 3-state output TTL drive capabilities for bi-directional data bus and control bus

■ Line break generation and detection

■ Internal diagnostic capabilities:

SC16C652B_4 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.

Product data sheet Rev. 04 — 1 September 2005 3 of 43

4. Block diagram

SC16C652B