SAP5 datasheet(11/66 Pages) IDT

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SAP51 / SAP5S Datasheet

January 28, 2016

Basic Functional Description

Note: Unless otherwise noted, the product name SAP5 refers to both the SAP51 and the SAP5S.

The SAP5 is a low-level field bus IC designed for AS-i (Actuator Sensor Interface), which provides a secure

interconnection for sensors, actuators, and switches via a two-wire unshielded cable.

The SAP5 is used as part of a master or slave node and functions as an interface to the physical bus. It provides

the power supply, physical data transfer, and communication protocol handling. The SAP5 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.

Configuration data are stored in a programmable internal EEPROM.

The SAP5 is optimized for harsh environments by its special burst protection circuitry and excellent electro-

magnetic compatibility.

3.1.

Functional Block Diagram

Figure 3.1

Functional Block Diagram

neg

Main

State

Machine

Power

Supply

pos

MAN

UART

LTGP

LTGN

CDC

U5R

P[3:0]

D[3:0]

Output

LED1, LED2

I / O

DSTBn

Output

PSTBn

Input

PFAULT

DSTB

LED

PSTB

PFAULT

EEPROM

OSC1

OSC2

clk

Oscillator

PLL

Offset

I / O

Offset

I / O

Param

Data

UOUT

Thermal

Protection

APF

Power

Fail Detector

Receiver

Transmitter

Electronic

Inductor

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