Renesas RL78 Series User Manual page 808

16-bit single-chip microcontrollers

Hide thumbs Also See for RL78 Series:

Table of Contents

27.1 Connecting E1 On-chip Debugging Emulator

The RL78 microcontroller uses the V

on-chip debugging emulator. Serial communication is performed by using a single-line UART that uses the TOOL0 pin.

Caution The RL78 microcontroller has an on-chip debug function, which is provided for development and

evaluation. Do not use the on-chip debug function in products designated for mass production,

because the guaranteed number of rewritable times of the flash memory may be exceeded when this

function is used, and product reliability therefore cannot be guaranteed. Renesas Electronics is not

liable for problems occurring when the on-chip debug function is used.

Figure 27-1. Connection Example of E1 On-chip Debugging Emulator

E1 target connector

Notes 1. Connecting the dotted line is not necessary during serial programming.

Caution This circuit diagram is assumed that the reset signal outputs from an N-ch open-

R01UH0515EJ0120 Rev.1.20

Dec 16, 2016

CHAPTER 27 ON-CHIP DEBUG FUNCTION

, RESET, TOOL0, and V

2. If the reset circuit on the target system does not have a buffer and generates a reset

signal only with resistors and capacitors, this pull-up resistor is not necessary.

drain buffer (output resistor: 100 Ω or less)

CHAPTER 27 ON-CHIP DEBUG FUNCTION

pins to communicate with the host machine via an E1

Reset circuit

Reset signal

Rl78/g1d R5f11agg R5f11agh R5f11agj