XE8806A SEMTECH [Semtech Corporation], XE8806A Datasheet - Page 76

• Manufacturer Part Number: XE8806A
• Description: Ultra Low-Power Low-Voltage
• Manufacturer: SEMTECH [Semtech Corporation]

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.
12.8 Low power comparators
If the low power comparator (CMPD) peripheral is present in the circuit, the signals on the pins PB[7:4] can be used
as inputs for these low power comparators. Although the comparators are functional independent of the Port B
configuration, it is recommended to set the pins that are used for the CMPD in analog mode without selecting any
analog lines. This to avoid high power consumption in the digital input buffer when analog or slowly varying digital
signals are applied.
© Semtech 2006
sym
V
V
V
R
V
Cin
INH
INL
OL
PU
OH
Table 12-12. Digital port specification
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
12-7
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
XE8806A/XE8807A
Note 1
OH
OH
OH
OL
=0.3mA
=0.3mA
=5.0mA
=8.0mA
OL
OL
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