Renesas RL78/G11 User Manual
High-end gas cooker
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USER'S MANUAL
RL78/G11
R01AN3905EC0101
Rev.1.01
High-end Gas Cooker
Oct. 08, 2018
Introduction
This user's manual describes a Renesas ultra-low-power microcontroller RL78/G11 application for a high-end gas stove,
through the internal timer array unit, buzzer output control circuit, A/D converter and other functions.
Target Device
RL78/G11
R01AN3905EC0101 Rev.1.01
Page 1 of 19
Oct. 08, 2018
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Table of Contents
Related Manuals for Renesas RL78/G11
Summary of Contents for Renesas RL78/G11
- Page 1 High-end Gas Cooker Oct. 08, 2018 Introduction This user's manual describes a Renesas ultra-low-power microcontroller RL78/G11 application for a high-end gas stove, through the internal timer array unit, buzzer output control circuit, A/D converter and other functions. Target Device RL78/G11 R01AN3905EC0101 Rev.1.01...
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Page 2: Table Of Contents
RL78/G11 High-end Gas Cooker Contents Outline of System Function ................... 3 Introduction of High-end Gas Cooker ..................3 Introduction of Control System ....................3 Introduction of Operation ......................4 Introduction of Hardware ....................5 Introduction of PCB ........................5 Hardware Block Diagram ......................6 Main MCU ............................. -
Page 3: Outline Of System Function
The high-end gas cooker consists of micro switch, high voltage pulse ignition, gas detection, anti-dry protection, flame temperature detection (thermocouple temperature feedback), alarm and electronic circuit with RL78/G11 MCU as its core. For schematic diagram of control system, see Figure 1.1. -
Page 4: Introduction Of Operation
RL78/G11 High-end Gas Cooker Introduction of Operation (1) The gas detection timer starts automatically after the power is turned on. (2) When time (10 ms) is up, it begins to detect gas concentration, and if the concentration is too high, the buzzer will sound. -
Page 5: Introduction Of Hardware
RL78/G11 High-end Gas Cooker Introduction of Hardware Introduction of PCB The demo board of the high-end gas cooker is shown in Figure 2.1. Electromagnetic valve control detection E1 emulator interface Ignition feedback RL78/G11 Anti-dry protection Alarm High voltage Micro switch... -
Page 6: Hardware Block Diagram
RL78/G11 High-end Gas Cooker Hardware Block Diagram The hardware block diagram of the high-end gas cooker lighting is shown in Figure 2.2. Power supply On-Chip Debug TOOL0 9V Battery Electromagnetic valve control Lift RL78/G11 Alarm control Right Ignition control (20Pin) -
Page 7: Main Mcu
The demo board of the high-end gas cooker uses RL78/G11 (R5F1056AASP main MCU. The Flash ROM size of RL78/G11 is 16 KB and the RAM size is 1.5 KB. The used peripheral functions of RL78/G11 and their applications are shown in Table 2.1. -
Page 8: Power Supply Circuit
RL78/G11 High-end Gas Cooker Power Supply Circuit The power section needs to connect with external 9V DC, then gets stable 5V for power supply through ME6209A50. The power supply circuit is shown in Figure 2.4. Figure 2.4 Power Supply Circuit High Voltage Pulse Ignition Circuit The high voltage pulse ignition circuit is composed of an oscillating circuit and a high-voltage circuit. -
Page 9: Micro Switch Circuit
RL78/G11 High-end Gas Cooker Micro Switch Circuit The high voltage pulse ignition starts/stops according to the pin status of the micro switch. The micro switch circuit is shown in Figure 2.6. Figure 2.6 Micro Switch Circuit Flame Temperature Detection Circuit After the high voltage pulse ignition begins, it starts to detect the voltage signal of thermocouple feedback. -
Page 10: Gas Detection Circuit
RL78/G11 High-end Gas Cooker Gas Detection Circuit The high-end gas cooker's gas detection circuit is composed of a MQ-4 gas detection sensor and a LM393B voltage comparator. When the concentration of natural gas exceeds the standard, the DOUT pin outputs a low level, at the same time the LED1 (alarm lamp) lights up, then it will disable ignition and close the electromagnetic valve and give an alarm tone. -
Page 11: Electromagnetic Valve Control Circuit
RL78/G11 High-end Gas Cooker 2.10 Electromagnetic Valve Control Circuit The high-end gas cooker will start the ignition after receiving the switch response. At this time, the gas control valve will be opened. The electromagnetic valve control circuit is shown in Figure 2.10. -
Page 12: Schematic, Pcb And Bill Of Materials
RL78/G11 High-end Gas Cooker Schematic, PCB and Bill of Materials Schematic The schematics of the high-end gas stove are shown in Figure 3.1 and Figure 3.2. Figure 3.1 Schematic (1/2) R01AN3905EC0101 Rev.1.01 Page 12 of 19 Oct. 08, 2018... - Page 13 RL78/G11 High-end Gas Cooker Figure 3.2 Schematic (2/2) R01AN3905EC0101 Rev.1.01 Page 13 of 19 Oct. 08, 2018...
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Page 14: Pcb
RL78/G11 High-end Gas Cooker The PCB of the high-end gas stove lighting is shown in Figure 3.3. Figure 3.3 PCB R01AN3905EC0101 Rev.1.01 Page 14 of 19 Oct. 08, 2018... -
Page 15: Bill Of Materials
RL78/G11 High-end Gas Cooker Bill of Materials The bill of materials of the high-end gas stove is shown in Table 3.1 and Table 3.2. Table 3.1 Bill of Materials Designator Quantity Part Name Manufacturer Description ― ― Adjustable resistance (10K) - Page 16 Part Name Manufacturer Description AT-1224-TWT-5V-2-R PUI Audio,Inc. AUDIO MAGNETIC XDCR 3-7V TH 1825910-6 TE Connectivity Push Switch (6x6mm DIP) R5F1056AASP Renesas MCU RL78/G11 20PIN (LSSOP-20) ME6209 Micro One Low Power Consumption LDO ― EE13 Transformer SparkFun MQ-4 Gas Detection Electronics...
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Page 17: Introduction Of Software
The integrated development environments of the high-end gas stove are shown in Table 4.1 and Table 4.2. Table 4.1 Integrated Development Environments (CS+ for CC) Item Contents Integrated development environment CS+ for CC V5.00.00 (Renesas Electronics Corporation) C complier CC-RL V1.04 (Renesas Electronics Corporation) Debugger E1 (Renesas Electronics Corporation) Table 4.2 Integrated Development Environments (e2studio) -
Page 18: Flow Chart
RL78/G11 High-end Gas Cooker Flow Chart 4.3.1 Flow Chart of Firmware Main Program The flow chart of firmware main program is shown in Figure 4.1. Start Disable interrupt Hrdware Initialization Start interval timer: 10ms Time out? Gas leakage? Get micro switch status... -
Page 19: Sample Code
User's Manual RL78/G11 User's Manual: Hardware (R01UH0637E) RL78 Family User's Manual: Software (R01US0015E) The latest versions of the documents are available on the Renesas Electronics Website. Technical Updates/Technical News The latest information can be downloaded from the Renesas Electronics website. - Page 20 Revision History Description Rev. Date Page Summary 1.00 Sep. 15, 2017 First edition issued 1.01 Oct. 08, 2018 7, 16 Change MCU name from R5F1056A to R5F1056AASP...
- Page 21 General Precautions in the Handling of Microprocessing Unit and Microcontroller Unit Products The following usage notes are applicable to all Microprocessing unit and Microcontroller unit products from Renesas. For detailed usage notes on the products covered by this document, refer to the relevant sections of the document as well as any technical updates that have been issued for the products.
- Page 22 (space and undersea repeaters; nuclear power control systems; aircraft control systems; key plant systems; military equipment; etc.). Renesas Electronics disclaims any and all liability for any damages or losses incurred by you or third parties arising from the use of any Renesas Electronics product for which the product is not intended by Renesas Electronics.
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