Renesas RL78 Series User Manual page 787

RL78/G1D
26.1.1 Programming environment
The environment required for writing a program to the flash memory of the RL78 microcontroller is illustrated below.
Host machine
A host machine that controls the dedicated flash memory programmer is necessary.
To interface between the dedicated flash memory programmer and the RL78 microcontroller, the TOOL0 pin is used for
manipulation such as writing and erasing via a dedicated single-line UART.
26.1.2 Communication mode
Communication between the dedicated flash memory programmer and the RL78 microcontroller is established by serial
communication using the TOOL0 pin via a dedicated single-line UART of the RL78 microcontroller.
Transfer rate: 1 M, 500 k, 250 k, 115.2 kbps
Figure 26-2. Communication with Dedicated Flash Memory Programmer
PG-FP5, FL-PR5
Dedicated flash
memory programmer
Notes 1. When using E1 on-chip debugging emulator.
2. When using PG-FP5 or FL-PR5.
3. Connect REGC pin to ground via a capacitor (0.47 to 1 µF).
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
Figure 26-1. Environment for Writing Program to Flash Memory
PG-FP5, FL-PR5
RS-232C
USB
Dedicated flash
memory programmer
EMV
E1 DD
FLMD1
Note 1
RESET
Note 2
/RESET
TOOL0
SI/RxD
E1
TOOL0 (dedicated single-line UART)
V
DD
V
DD
Note 1 ,
Note 2
GND REGC
,
RESET
Note 1
TOOL0
Note 2
CHAPTER 26 FLASH MEMORY
V
DD
RESET
RL78
microcontroller
Note 3
RL78 microcontroller
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