Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
®
ELS81-US Hardware Interface Description
3.2 Power Up/Power Down Scenarios
77
els81-us_hid_v01.004 2017-09-27
Confidential / Preliminary
Page 56 of 107
Figure 29: Sample circuit for applying power using an external µC
3.8V
Module
Place C2-C5 close to module
µcontroller
ENABLE
VBATT
VBATT_IN
C1
100nF
C2 47µF,X5R
C3 47µF,X5R
C4 47µF,X5R
C5 47µF,X5R
C6 47µF,X5R
R1
100k
R2
100k
R3
100k
R6
10k
T1
T2
IRML6401
BC847