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AS2701A

austriamicrosystems AG
Part Number AS2701A
Manufacturer austriamicrosystems AG
Description AS-Interface Slave IC
Published Mar 24, 2005
Detailed Description AS2701A (ISA3+) AS-Interface Slave IC Data Sheet Rev. C, October 2000 AS-Interface Slave IC AS2701A (ISA3+) Key Featur...
Datasheet PDF File AS2701A PDF File

AS2701A
AS2701A

Overview
AS2701A (ISA3+) AS-Interface Slave IC Data Sheet Rev.
C, October 2000 AS-Interface Slave IC AS2701A (ISA3+) Key Features • • • • • • • • • • Simple two-wire bus (AS-Interface line) Transmission of both power and signal on the AS-Interface line Decoupling of power and signal by the IC without additional external devices Transmitting protocol for using the IC and the AS-Interface master in the transmit/receive modes Switching of max.
31 AS-Interface slave ICs on one bus possible Power supply of peripheral devices from the AS-Interface slave IC of up to 35mA@24V Only few external devices necessary for operation (quartz, 4 capacitors, E2PROM) Storing of the configuration data and the slave address in one E2PROM Quartz oscillator for 5.
333 MHz without external capacitances Standards: AS-Interface–Spec V2.
0 and EN 50295 General Description The signal transmission between the master and the slaves in the AS-Interface system is performed by a parallel two-line wire (AS-Interface line) to which the IC is connected only via a polarity protection diode and a suppressor diode.
The line is powered by a direct dc voltage of up to 33.
1 V, on which data pulses with signal amplitudes of (3.
.
.
8) Vpp are superimposed.
The IC extracts its own power and the power for peripherals from the line and detects the bus signals.
The AS-Interface slave IC consists of the following blocks: • Receive Block • Transmit Block • Digital Logic Block • Emergency Control Block • Internal and External Power Supply with Signal decoupling • Oscillator • Power on Reset • High Voltage I/O Block Diagram TEST LTGP switch Transmit Block Internal Power Supply Signal Decoupling CDC UOUT Ext.
Power Supply U5R Emergency and Temperature Control Block E2-Interface Receive Block imp_pos, imp_neg SCL SDA D0.
.
.
D3 LTGN Power-On Reset Oscillator Digital Block HVI/O DSTBn P0.
.
.
P3 PSTBn OSC1 Rev.
C, October 2000 OSC2 Page 2 of 16 AS-Interface Slave IC AS2701A (ISA3+) Package SOIC20 Pin Description D3 D2 ...


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