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Globalstar ST150 User Manual

Globalstar ST150
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9150-0125-01 R-4
ST150M User Manual
Confidential & Proprietary Information
19
4.2.1 GPIO
GPIO has the following user-configurable features:
• Configurable output drive strength
• Internal pull-up and pull-down resistors
• Wake-up from high or low level triggers on all pins
• Trigger interrupt on state changes on any pin
• All pins can be used by the PPI task/event system
• One or more GPIO outputs can be controlled through PPI and GPIOTE channels
• All pins can be individually mapped to interface blocks for layout flexibility
• GPIO state changes captured on SENSE signal can be stored by LATCH register
• An event can be generated in each GPIO based on a rising edge, falling edge, or any changing edge.
Symbol
Description
Min
Typ
Max
Units
VIH
Input High Voltage
0.7VDD
VDD
V
VIL
Input Low Voltage
VSS
0.3VDD
V
VOH
Output High Voltage
2.9
VDD
V
VOL
Output Low Voltage
VSS
0.4
V
IOL,SD
Current at VSS+0.4 V, output set low, standard drive
1
2
4
mA
IOL,HDH
Current at VSS+0.4 V, output set low, high drive
6
10
15
mA
IOH,SD
Current at VDD-0.4 V, output set high, standard drive
1
2
4
mA
IOH,SD
Current at VDD-0.4 V, output set high, high drive
6
9
14
mA
RPU
Internal Pull-up Resistance
11
13
16
kOhm
RPD
Internal Pull-down Resistance
11
13
16
kOhm
4.2.2 Comparator
The comparator (COMP) compares an input voltage (VIN+) against a second input voltage (VIN-). VIN+ can be
derived from an analog input pin (AIN0-AIN7). VIN- can be derived from multiple sources depending on the
operation mode of the comparator.
Main features of the comparator are:
Input range from 0 V to VDD
Single-ended mode
Fully flexible hysteresis using a 64-level reference ladder
Differential mode
Configurable 50 mV hysteresis
Reference inputs (VREF): VDD
External reference from AIN0 to AIN7 (between 0 V and VDD)
Internal references 1.2 V, 1.8V and 2.4V
Three speed/power consumption modes: low-power, normal and high-speed
Single-pin capacitive sensor support
Event generation on output changes
UP event on VIN- > VIN+
DOWN event on VIN- < VIN+
CROSS event on VIN+ and VIN- crossing
READY event on core and internal reference (if used) ready

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Globalstar ST150 Specifications

General IconGeneral
BrandGlobalstar
ModelST150
CategoryControl Unit
LanguageEnglish

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