SAP5S / SAP51

Universal Actuator-Sensor Interface IC

© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 3.1

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The information furnished in this publication is PRELIMINARY and subject to changes without notice.

Brief Description

SAP5S/SAP51

is

a

new

generation

CMOS

integrated circuit for AS-I networks.

The low-level field bus AS-I (Actuator Sensor

Interface) was designed for easy, safe and cost-

effective interconnection of sensors, actuators and

switches. It transports both power and data over the

same two-wire unshielded cable.

SAP5S/SAP51 is used as a part of a master or

slave node and works as an interface to the

physical bus.

The device realizes power supply, physical data

transfer and communication protocol handling and

is

fully

compliant

with

AS-Interface

Complete

Specification V3.0.

SAP5S/SAP51 can be programmed by the user to

operate in Standard Slave Mode, Safety Mode

SAP5S only) or Master Mode.

The special AS-I Safety Mode (SAP5S only)

assures short response times regarding security

related events.

All configuration data are stored in an internal

EEPROM that can be easily programmed by a

stationary or handheld programming device.

SAP5S

/

SAP51

is

optimized

for

harsh

environments

by

it’s

special

burst

protection

circuitry and excellent electromagnetic compatibility.

Features

 Compliant with ASI Complete Specification V3.0

 Integrated safety code generator (SAP5S only)

 Universal application: in slaves, masters,

repeaters and bus-monitors

 On-chip electronic inductor: 55 mA current drive

capability

 Two LED outputs to support Spec. V3.0 status

indication modes

 User programmable to operation in Standard

Slave Mode, Safety Mode or Master Mode

 Supports 5.33/16 MHz crystals by automatic

frequency detection

 Data pre-processing functions

 Special burst protection circuitry

 Excellent electromagnetic compatibility

 Clock and communication watchdogs for high

system security

Benefits

 Cost savings due to integrated Safety code

Generator (SAP5S)

 Functional and pin compatible to SAP4.1

 Automatic x-tal detection (5,3333MHz or

16,0000MHz)

 Supports AS-I complete Specification 3.0

Available Support

 ZMDI AS-Interface Programmer Kit USB

 ZMDI SAP5 Evaluation Board V2.0

Physical Characteristics

 Operational temperature range: -25 to +85°C

 SOP16 and SOP20 package

SAP5S/SAP51 Basic Application Circuit

+24V

+0V

ASI+

ASI-

ASI+

ASI-

SAP5S

U5R

CDC

LTPN

LTGP

OSC2

OSC1

UIN

UOUT

D2

D0

D1

D3

Standard Application

Safety Mode Slave Application

SAP51/

SAP5S

U5R

CDC

LTPN

LTGP

OSC2

OSC1

UIN

UOUT

PFAULT

D0...3

DSTBn

P0...3

LED2

LED1

PSTBn