SCN26562 データシートの表示（PDF） - Philips Electronics

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SCN26562

Dual universal serial communications controller (DUSCC)

Philips Electronics 

Philips Semiconductors

Dual universal serial communications controller (DUSCC)

Product specification

SCN26562

Character-Oriented Protocol Features

• Character length: 5 to 8 bits

• Odd or even parity, no parity, or force parity

• LRC or CRC generation and checking

• Optional opening PAD transmission

• One or two SYN characters

• External sync capability

• SYN detection and optional stripping

• SYN or MARK line-fill on underrun

• Idle in MARK or SYNs

• Parity, FCS, overrun, and underrun error detection

BISYNC Features

• EBCDIC or ASCII header, text and control messages

• SYN, DLE stripping

• EOM (end of message) detection and transmission

• Auto transparent mode switching

• Auto hunt after receipt of EOM sequence (with closing PAD check

after EOT or NAK)

• Control character sequence detection for both transparent and

normal text

ORDERING INFORMATION

DESCRIPTION

48-Pin Plastic Dual In-Line Package (DIP)

52-Pin Plastic Leaded Chip Carrier (PLCC) Package

Bit-Oriented Protocol Features

• Character length: 5 to 8 bits

• Detection and transmission of residual character: 0–7 bits

• Automatic switch to programmed character length for I field

• Zero insertion and detection

• Optional opening PAD transmission

• Detection and generation of FLAG, ABORT, and IDLE bit patterns

• Detection and generation of shared (single) FLAG between

frames

• Detection of overlapping (shared zero) FLAGs

• ABORT, ABORT-FLAGs, or FCS FLAGs line-fill on underrun

• Idle in MARK or FLAGs

• Secondary address recognition including group and global

address

• Single- or dual-octet secondary address

• Extended address and control fields

• Short frame rejection for receiver

• Detection and notification of received end of message

• CRC generation and checking

• SDLC loop mode capability

VCC = +5V +5%, TA = 0°C to +70°C

Serial Data Rate =

4Mbps Maximum

SCN26562C4N48

SCN26562C4A52

DWG #

SOT240-1

SOT238-3

ABSOLUTE MAXIMUM RATINGS1

SYMBOL

PARAMETER

RATING

UNIT

TA

Operating ambient temperature2

0 to +70

°C

TSTG

VCC

VS

Storage temperature

Voltage from VCC to GND3

Voltage from any pin to ground3

-65 to +150

°C

–0.5 to +7.0

V

–0.5 to VCC +0.5

V

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any other conditions above those indicated in the operation section of this specification is not

implied.

2. For operating at elevated temperatures, the device must be derated based on +150°C maximum junction temperature and thermal

resistance of 36°C/W junction to ambient for ceramic DIP, 40°C/W for plastic DIP, and 42°C/W for PLCC.

3. This product includes circuitry specifically designed for the protection of its internal devices from damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying any voltages larger than the rated maxima.

1995 May 1

2

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