Programming Environment; Communication Mode - NEC 78K0S/KA1+ Preliminary User's Manual

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18.5 Programming Environment

The environment required for writing a program to the flash memory is illustrated below.
Host machine
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Note DGCLK and DGDATA are single-wire bidirectional communication interfaces. They use UART as the

communication mode.

A host machine that controls the dedicated flash programmer is necessary.
UART is used for manipulation such as writing and erasing when interfacing between the dedicated flash
programmer and the 78K0S/KA1+. To write the flash memory off-board, a dedicated program adapter (FA series) is
necessary.
18.6 Communication Mode
Communication between the dedicated flash programmer and the 78K0S/KA1+ is established by serial
communication via UART using the X1 or X2 pin of the 78K0S/KA1+.
• Transfer rate: 115200 bps
266
CHAPTER 18 FLASH MEMORY
Figure 18-3. Environment for Writing Program to Flash Memory
RS-232C
Axxxx
Bxxxxx
Cxxxxxx
PG-FP4
USB
Dedicated flash
programmer
Figure 18-4. Communication with Dedicated Flash Programmer
V
DD
GND
Axxxx
Bxxxxx
/RESET
Cxxxxxx
STATVE
PG-FP4
CLK
FLMD0
Dedicated flash
programmer
RxD
TxD
Preliminary User's Manual U16898EJ1V0UD
V
DD
V
SS
STATVE
RESET
Note
DGCLK
Note
DGDATA
V
DD
V
SS
RESET
X1
78K0S/KA1+
X2
78K0S/KA1+