XE8000EV101 Semtech, XE8000EV101 Datasheet - Page 69

• 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

Each bit can be set individually for pull-up or not using register RegPBPullup. Input is pulled up when its
corresponding bit in this register is set to 1. Default status after (resetpconf) is 0, which means without pull up. To
limit power consumption, pull-up resistors are only enabled when the associated pin is either a digital input or an N-
channel open-drain output with the pad set to 1. In the other cases (push-pull output or open-drain output driven
low), the pull up resistors are disabled independent of the value in RegPBPullup.
After power-on reset, the Port B is configured as an input port without pull-up.
The input buffer is always active, except in analog mode. This means that the Port B input should be a valid digital
value at all times unless the pin is set in analog mode. Violating this rule may lead to high power consumption.
12.7.2
Note 1: this value is indicative only since it depends on the package.
© Semtech 2005
Sym
V
V
V
R
V
Cin
INL
INH
OL
PU
OH
Port B digital function specification
description
Input high voltage
Input low voltage
Output high voltage
Output low voltage
Pull-up resistance
Input capacitance
0.7*VBAT
VBAT-0.4
VSS
VSS
min
20
3.5
typ
50
12-6
0.2*VBAT
VSS+0.4
VBAT
VBAT
max
80
unit Comments
kΩ
pF
V
V
V
V
VBAT=1.2V, I
VBAT=2.4V, I
VBAT=4.5V, I
VBAT=1.2V, I
VBAT=2.4V, I
VBAT=4.5V, I
VBAT≥2.4V
VBAT≥2.4V
=12.0mA
=15.0mA
Note 1
XE8801A – SX8801R
OH
OH
OH
OL
=0.3mA
=0.3mA
=5.0mA
=8.0mA
OL
OL
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