MC-78F0712-KIT Renesas Electronics America, MC-78F0712-KIT Datasheet - Page 318

• Manufacturer Part Number: MC-78F0712-KIT
• Description: KIT REF SYSTEM 78K0 UPD78F0712
• Manufacturer: Renesas Electronics America

Specifications of MC-78F0712-KIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22.5.3 Serial interface pins
device on the board, care must be exercised so that signals do not collide or that the other device does not
malfunction.
(1) Signal collision
316
The pins used by each serial interface are listed below.
To connect the dedicated flash memory programmer to the pins of a serial interface that is connected to another
If the dedicated flash memory programmer (output) is connected to a pin (input) of a serial interface connected to
another device (output), signal collision takes place. To avoid this collision, either isolate the connection with the
other device, or make the other device go into an output high-impedance state.
PD78F0711,
PD78F0712
Input pin
UART00
Figure 22-7. Signal Collision (Input Pin of Serial Interface)
In the flash memory programming mode, the signal output by the device
collides with the signal sent from the dedicated flash memory programmer.
Therefore, isolate the signal of the other device.
Table 22-3. Pins Used by Each Serial Interface
Serial Interface
Signal collision
CHAPTER 22 FLASH MEMORY
User’s Manual U17890EJ2V0UD
Dedicated flash memory
programmer connection pin
TxD00, RxD00
Other device
Output pin
Pins Used