XE8000EV101 Semtech, XE8000EV101 Datasheet - Page 67

• Manufacturer Part Number: XE8000EV101
• Description: EVAL BOARD FOR XE8801AMI027LF
• Manufacturer: Semtech
• Type: MCUr

Specifications of XE8000EV101

• Contents: Fully Assembled Evaluation Board
• For Use With/related Products: XE88LC01AMI027
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Example:
12.5.2
The table below defines the on-resistance of the switches between the pin and the analog bus for different
conditions. The series resistance between 2 pins of Port B connected to the same analog line is twice the
resistance given in the table.
Table 12-10. Analog input specifications.
Note 1: This is the series resistance between the pad and the analog line in 2 cases
Note 2: This is the series resistance in case VBAT ≥ 2.8V and the peripheral VMULT is not present on the circuit.
Note 3: This is the input capacitance seen on the pin when the pin is not connected to an analog line. This value is
indicative only since it is product and package dependent.
Note 4: This is the input capacitance seen on the pin when the pin is connected to an analog line and no other pin
is connected to the same analog line. This value is indicative only since it is product and package dependent.
© Semtech 2005
sym
Ron
Ron
Cin
Cin
Set the pads PB[2] and PB[3] on the analog line 3. (the values X depend on the configuration of others
pads)
-
-
-
-
Port B analog function specification
apply high impedance in the analog mode (move RegPBPullup,#0bXXXX00XX)
go to analog mode (move RegPBAna,#0bXXXXXX1X)
select the analog line3 (move RegPBDir,#0bXXXX11XX and move RegPBOut,#0bXXXX11XX)
connect the analog line to the pins (move RegPBPullup,#0bXXXX11XX)
switch resistance
switch resistance
input capacitance (on)
description
input capacitance (off)
Table 12-9: Selection of the analog lines for PB[x] when x is even and PBAna[x] = 1
Table 12-8: Selection of the analog lines for PB[x] when x is odd and PBAna[x] = 1
1. VBAT ≥ 2.4V and the VMULT peripheral is present on the circuit and enabled.
2. VBAT ≥ 3.0V and the VMULT peripheral is not present on the circuit.
if x is even, PBDir[x+1, x]
if x is odd, PBOut[x, x-1]
XX
XX
00
01
10
11
00
01
10
11
min
3.5
4.5
typ
12-4
PBPullup[x]
PBPullup[x]
1
1
1
1
0
1
1
1
1
0
max
15
11
unit
kΩ
kΩ
pF
pF
PB[x] selection on
PB[x] selection on
High impedance
High impedance
analog line 0
analog line 1
analog line 2
analog line 3
analog line 0
analog line 1
analog line 2
analog line 3
Comments
XE8801A – SX8801R
Note 1
Note 2
Note 3
Note 4
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