as2701a austriamicrosystems, as2701a Datasheet - Page 7

• Manufacturer Part Number: as2701a
• Description: As-interface Slave Ic
• Manufacturer: austriamicrosystems

AS-Interface Slave IC
AS2701A (ISA3+)
c) Power Supply Pins LTGP and LTGN (LTGN = 0 V-reference)
The AS-Interface Slave IC's input at LTGP behaves as if a resistor RP and a (non-linear)
parallel capacitor CP connect LTGP to LTGN.
LTGP input impedance over frequency is as follows:
d) Data and Parameter Ports (D0...D3, DSTBn; P0...P3, PSTBn)
These pins are equipped with both an input and output channel as well as a current source
based pull-up structure; the I/O-circuit at these pins and their DC-characteristics @ output
channel 'Off' are described below.
The AS-Interface slave system concept requires D0...D3 and DSTBn to be bidirectional pins
and P0...P3 and PSTBn to be outputs.
The input channel on pins P0...P3 and PSTBn is only implemented to simplify the AS-Interface
Slave IC's device test, and is not intended to be used in AS-Interface Slave system applica-
tions.
Rev. C, October 2000
RP
D0..D3
DSTBn
PSTBn
P0..P3
10 kOhm
10 kOhm
10 kOhm
10 kOhm
10 kOhm
10 kOhm
U5R
LTGN
11 µA typ
CP
35 pF
45 pF
48 pF
51 pF
54 pF
60 pF
F
50 kHz
100 kHz
125 kHz
160 kHz
200 kHz
300 kHz
II[µA]
-10
-15
-20
-5
0
0
4
10
20
VI[V]
30
40
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