IEC 60747-19-1:2019

Semiconductor devices - Part 19-1: Smart sensors - Control scheme of smart sensors

IEC 60747-19-1:2019(E) specifies the control scheme of a sensor which is a device or a module which achieves a sensing function, data processing function and data output function, by employing a digital processing unit and a means of bidirectional communication between the sensor and an external terminal module

General Information

• Status: Published
• Publication Date: 21-Nov-2019
• ICS: 31.080.99 - Other semiconductor devices
• Technical Committee: SC 47E - Discrete semiconductor devices
• Drafting Committee: WG 1 - TC 47/SC 47E/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 22-Nov-2019
• Completion Date: 13-Dec-2019

Overview

IEC 60747-19-1:2019 - "Semiconductor devices - Part 19-1: Smart sensors - Control scheme of smart sensors" defines a standardized control scheme for smart sensors. The standard covers devices or modules that combine sensing, analog‑to‑digital conversion, on‑device digital processing and bidirectional communication with an external terminal module. Its purpose is to harmonize how terminal modules control smart sensors, how registers and status information are exposed, and how physical connections and optional functions (interrupts, multi‑sensor support) are organized to facilitate interoperable smart sensing units.

Key topics and technical requirements

• Scope and definitions: formalizes terms such as smart sensor, smart sensing unit, terminal module, register, operation mode, sleep mode, data ready and error flag.
• Control scheme architecture: specifies a block‑level hardware control scheme for interactions between the terminal module and the smart sensor (register access, control flow).
• Register assignment & operation procedure: describes how registers in the sensor’s digital processing circuit are allocated and used to control sensing, status reporting and data transfer (see Table 1 and Annex tables for practical examples).
• Communication interfaces: recognizes common serial buses (I2C/inter‑integrated circuit and SPI/serial peripheral interface) as means for bidirectional communication between sensor and terminal module.
• Physical connections & optional configurations: details recommended connection lines, optional interrupt input/output lines and configurations for low‑power operation and event signaling.
• Optional functions & multi‑sensor handling: recommends optional control features (interrupts, multi‑sensor register mapping) and includes informative annexes with practical examples (single accelerometer example and multi‑sensor examples).
• No normative references: the document is self‑contained for the control scheme content.

Applications

• Designing interoperable smart sensing units used in IoT, industrial monitoring, building automation and consumer devices.
• Defining register maps, firmware interfaces and hardware interconnects between sensor ICs and terminal modules (gateways, microcontrollers, wireless modules).
• Enabling low‑power and energy‑harvesting systems by clarifying sleep modes, data‑ready signaling and power control interactions (detailed power-specification guidance is addressed in Part 19‑2).

Who should use this standard

• Semiconductor and MEMS sensor manufacturers creating smart sensors with on‑chip processing.
• Module and terminal designers (wireless modules, MCUs, gateways) integrating and controlling smart sensors.
• System architects, test engineers and integrators developing scalable smart sensing networks for predictive maintenance, environmental monitoring and factory automation.
• Standards practitioners and procurement teams seeking interoperability and clear device documentation.

Related standards

• IEC 60747-19 series: Part 19‑1 (control scheme) and Part 19‑2 (indication of sensor and power‑supply specifications, including time‑axis power profiles for autonomous power designs).

Standards Content (Sample)

IEC 60747-19-1 ®
Edition 1.0 2019-11
INTERNATIONAL
STANDARD
Semiconductor devices –
Part 19-1: Smart sensors – Control scheme of smart sensors
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IEC 60747-19-1 ®
Edition 1.0 2019-11
INTERNATIONAL
STANDARD
Semiconductor devices –
Part 19-1: Smart sensors – Control scheme of smart sensors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.080.99 ISBN 978-2-8322-7606-8

– 2 – IEC 60747-19-1:2019  IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Construction of smart sensor’s control scheme . 8
4.1 General . 8
4.2 Assignment of the smart sensor’s registers in the control scheme . 8
4.3 Operation procedure of control scheme . 9
4.4 Physical connection between smart sensor and terminal module. 11
4.5 Optional configuration . 12
4.6 Optional function . 14
Annex A (informative)  Practical example of smart sensor’s control scheme . 15
Annex B (informative) Smart sensor with multiple sensors – Practical example . 18

Figure 1 – Block diagram of hardware configuration regarding the smart sensor’s
control scheme from the terminal module in the smart sensing unit . 10
Figure 2 – Example of block diagram of connection lines between smart sensor and
terminal module . 12
Figure 3 – Example of block diagram of connection lines with optional interrupt input
and output lines between smart sensor and terminal module. 13
Figure A.1 – Block diagram of hardware configuration of smart accelerometer as an
example of smart sensors . 15
Figure B.1 – Block diagram of hardware configuration in the case of a smart sensor
with multiple sensors . 19
Figure B.2 – Block diagram of hardware configuration of a smart sensor with a
temperature sensor and a humidity sensor as an example of a smart sensor with
multiple sensors . 20

Table 1 – Assignment of the smart sensor’s registers in the smart sensor’s control
scheme . 11
Table 2 – Example of connection lines between smart sensor and terminal module . 12
Table 3 – Recommended optional configuration of connection lines between the smart
sensor and terminal module . 13
Table 4 – Recommended optional function of smart sensor’s control scheme . 14
Table A.1 – Practical example of assignment of smart sensor’s registers in smart
sensor’s control scheme . 16
Table B.1 – Practical example of assignment of registers of the smart sensor with a
temperature sensor and a humidity sensor . 21

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SEMICONDUCTOR DEVICES –
Part 19-1: Smart sensors – Control scheme of smart sensors

FOREWORD
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International Standard IEC 60747 has been prepared by subcommittee SC47E: Discrete
semiconductor devices, of IEC technical committee 47: Semiconductor devices.
The text of this International Standard is based on the following documents:
CDV Report on voting
47E/642/CDV 47E/668/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60747 series, published under the general title Semiconductor
devices, can be found on the IEC website.

– 4 – IEC 60747-19-1:2019  IEC 2019
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

INTRODUCTION
The development of smart sensors which integrate analog-to-digital conversion and digital
processing of the captured sensor signal(s) is in progress. A smart sensing unit, which
comprises a smart sensor; a terminal module, to control the smart sensor and perform
wireless communication; and a power supply for the smart sensor and the terminal module,
can send the output data of the smart sensor wirelessly to the outside. Here, the power supply
can be a plug-in power supply, a battery, an energy harvester, or their combination. A smart
sensing network where a large number of smart sensing units are located in manufacturing
factories, offices, and stores has been examined. With this network, environmental
monitoring, sensing of operational situations of manufacturing equipment and sensing of other
various events contribute to the realization of the following outcomes by analyzing the
collected sensing data. Namely, energy saving, improvement in factory productivity such as
operation rate, shortening of production lead time, preventive equipment maintenance, and
product quality improvement can be achieved.
However, considering the three components of the smart sensing unit, namely, the smart
sensor, terminal module, and power supply, standardization regarding control schemes to
connect the components to each other and regarding the indication of specifications of the
components has not been sufficiently established yet. This issue leads to the present situation,
where the development of each component in the smart sensing unit has not proceeded
efficiently.
The IEC 60747-19 series aims to address this issue. The IEC 60747-19 series comprises two
parts and its structure is currently conceived as follows:
Part 19-1: Smart sensors – Control scheme of smart sensors
Part 19-2 : Smart sensors – Indication of specifications of smart sensors and power supplies
to drive smart sensors
Part 19-1 specifies a control scheme of the smart sensor from the terminal module in the
smart sensing unit. Generally, the manufacturers of sensors have incorporated into the
sensors various parameters and conditions for sensing operations to fulfil various requests
and needs of the users. Therefore, it has been quite difficult for the users to understand how
to set the parameters and conditions adequately and master the use of sensors. This issue
has been a considerable obstacle in designing the smart sensing unit and smart sensing
system. The main objective of this part is to solve this obstacle for future expansion of the
smart sensors and smart sensing network systems.
Part 19-2 aims to provide guidelines to specify information that is required when the smart
sensing unit is newly designed. When the smart sensing unit is newly designed especially to
use an autonomous power supply, the designers have to appropriately arrange the selection
of the components of the unit and their usage conditions to satisfy that the power capability of
the power supply successfully exceeds the total power budget to be consumed in the unit as a
whole. First, information about the detailed power consumption characteristics of the smart
sensors is indispensable for this achievement. Namely, information about time-axis power
profiles which is not necessarily described in the datasheet of sensors is essential when
intermittent sensing operations are often adopted and a careful lower power design including
time-axis characteristics to allow adoption of an autonomous power supply is needed in IoT
(Internet of Things) applications. Therefore, Part 19-2 discusses an indication of smart
sensors’ electrical characteristics of time-axis power profiles. Second, information about total
power capability of the power supply to drive the unit and the smart sensor(s) is essential.
This power supply as a module comprises (a) primary battery(batteries), and(or) (a)
secondary battery(batteries), and(or) (an) energy harvester(s), or their combinations.
—————————
Under development.
– 6 – IEC 60747-19-1:2019  IEC 2019
Considering the not-so-simple configuration including power management circuits as a power
supply, Part 19-2 also discusses the indication of specifications of the power supply. With the
establishment of appropriate indications, the three components of the smart sensing unit can
be easily selected and combined from a point of view of a low-power design, when the smart
sensing unit is newly designed and the overall design of the smart sensing unit itself can be
facilitated.
SEMICONDUCTOR DEVICES –
Part 19-1: Smart sensors – Control scheme of smart sensors

1 Scope
This part of IEC 60747 specifies the control scheme of a sensor which is a device or a module
which achieves a sensing function, data processing function and data output function, by
employing a digital processing unit and a means of bidirectional communication between the
sensor and an external terminal module.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
smart sensor
sensor device or sensor module which integrates analog-to-digital conversion and digital
processing of the captured sensor signal(s)
3.2
smart sensing unit
unit comprising a smart sensor, a terminal module, and a power supply, which can send
output data of the smart sensor to the outside
3.3
terminal module
integrated circuit device or module which is a component of a smart sensing unit, and which
controls the smart sensor, receives the output data of the smart sensor, and sends the output
data to the outside
3.4
digital processing circuit
integrated circuit device or a module performing digital arithmetic and(or) logic operations on
digital data
3.5
register
local storage area on a digital processing circuit, which holds digital data that is being
processed by the digital processing circuit

– 8 – IEC 60747-19-1:2019  IEC 2019
3.6
operation mode
operation type of an electronic device or module predetermined by its manufacturer, and in
some cases, determined by its user
3.7
sleep mode
power-saving mode for an electronic device or module in which all unnecessary components
in the device or module are shut down
3.8
status information
information regarding the current condition of an electronic device or module
3.9
data ready
type of status information, which is a piece of digital data to mark when a data preparing
operation has been conducted and when data has been available in an electronic device or
module
3.10
error flag
type of status information, which is a piece of digital data to mark when an error event has
occurred in an electronic device or module
3.11
inter-integrated circuit
I C
widely used two-line digital serial communication bus
3.12
serial peripheral interface
SPI
widely used three-line or four-line digital serial communication bus
4 Construction of smart sensor’s control scheme
4.1 General
Figure 1 provides a block diagram of the hardware configuration regarding the smart sensor’s
control scheme from the terminal module in the smart sensing unit. The smart sensor’s
control scheme utilizes registers which a digital processing circuit embedded in the smart
sensor possesses. The smart sensor’s control scheme is established by operations in which
both the terminal module and the smart sensor mutually read and write data to the registers.
Each register is of 1 byte. Table 1 provides the byte assignment of the registers in the control
scheme. Here, the name, address, and content of each register are defined, and
...