All Questions List

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Switching operating clock at power-on

• Switching operating clocks at power-on (78K0/Kx2 and 78K0R)

Bit Manipulation

• Cautions regarding bit manipulation
• The data output before setting the port mode is ignored.
• uPD75P0016 port manipulation

Register Setting Seq.

• Cautions regarding register setting sequence
• Timer control register setting sequence [V853]
• Serial register setting sequence [78K/0]

Rising/falling of input

• Rising edge/falling edge of signal input to input pin [Common]
• Standard rise time for interrupts triggered at the input signal's rising edge [Common]

Remote Control

• NEC format for infrared remote control [Common]
• What is the NEC format? [Common]
• Use of NEC format
• Acquiring a custom code
• How much of an error margin is there for the carrier frequency? [Common]
• Does NEC Electronics make remote control receivers?
• Standard device for NEC format
• Sample program for receiving infrared remote control signals

Kinds of Microcomputer

• Names of microcomputers
• Bit counts in product names
• Types of on-chip ROM in microcontrollers
• On-chip memory in microcontrollers [All microcontrollers]
• All Flash
• Low-pin-count microcontrollers

Microcontrollers for control or embedded applications

• Microcontrollers for control or embedded applications

Timer counter

• Timer counter basics [Common]

Watchdog Timer

• Watchdog Timer Basics

Standby Operation

• Standby Operation

Microcontroller and Memory

• Microcontroller and memory

Key switch input into microcontroller

• Key switch input into microcontroller

Key Interrupt and Chattering Countermeasures

• Key interrupt and chattering countermeasures (78K0/Kx2)

LED drive methods

• LED drive methods (78K0/Kx2, 78K0S/Kx1+)

Dynamic display methods for LEDs

• Dynamic display methods for LEDs (78K0/Kx2, 78K0S/Kx1+)

Table referencing and interpolation processing

• Table referencing and interpolation processing (The program example used applies to model 78K0. Everything else applies to the whole series.)

Software I2C bus communication program for 78K0S

• Software I2C bus communication program for 78K0S (78K0S/Kx1+ common, program samples are targeted for KY1+)

Simple ways to use A/D converters

• Simple ways to use A/D converters (78K0/Kx2, 78K0S/Kx1+)

Key switch input in microcontrollers (part 2)

• Key switch input in microcontrollers (part 2)

Development

• Flow of microcontroller development
• Instructions
• ROMization [Common]
• Format for ROM code ordering (Intel hexadecimal format) [Common]

Development Tool Parts

• Weight and size of EV-9200G-80 conversion socket
• Projections of EV-9200G-80 conversion socket
• Can reflow soldering be used for the EV-9200G-80 ?

Flash Programming

• Flash programming basics
• Does the operation differ for the emulator and flash version?
• Connection to flash memory programmer
• Port status during programming
• Port settings during flash programming
• Selection of data transfer mode (3-wire serial and UART)
• Clock during on-board programming
• Relationship between programming time and serial clock speed
• Data transfer could not be performed when the UART serial clock is 4.19MHz.
• Is clock connection required during flash programming (CLK >> X1)?
• Connection of Vpp pin during normal operation
• An initialize error is output during on-board programming.
• "Target Signature Error" is displayed during programming.
• What should be done when replacing the flash memory version with the mask ROM version?
• Can internal flash memory be rewritten more than 20 times?
• What is the data value in areas that are not programmed?
• I want to read the contents written to the internal flash memory.
• Is self-programming possible? [uPD78F0058]
• Flash programming time

PCB

• Cautions regarding PCB design
• PCB pad dimensions

Option bytes

• Option bytes settings (common for 78K0/Kx2, 78K0S/Kx1+)
• Option bytes (78K0/Kx2, 78K0S/Kx1+)

Screening

• Screening (flash microcontroller and OTP microcontroller)

Power supply

• AVref power supply when not using A/D function
• Regulator

Oscillation

• Matching