M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 756

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

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

754
(3) Serial interface pin
The following shows the pins used by each serial interface.
When connecting a dedicated flash memory programmer to a serial interface pin that is connected to another
device on-board, care should be taken to avoid conflict of signals and malfunction of the other device.
(a) Conflict of signals
When the dedicated flash memory programmer (output) is connected to a serial interface pin (input) that is
connected to another device (output), a conflict of signals occurs. To avoid the conflict of signals, isolate
the connection to the other device or set the other device to the output high-impedance status.
V850E/IA3, V850E/IA4
Input pin
Figure 22-9. Conflict of Signals (Serial Interface Input Pin)
UARTA0
CSIB0
CSIB0 + HS
In the flash memory programming mode, the signal that the dedicated flash
memory programmer sends out conflicts with signals another device
outputs. Therefore, isolate the signals on the other device side.
Table 22-10. Pins Used by Serial Interfaces
Serial Interface
Conflict of signals
CHAPTER 22 FLASH MEMORY
User’s Manual U16543EJ4V0UD
TXDA0, RXDA0
SOB0, SIB0, SCKB0
SOB0, SIB0, SCKB0, P43
Dedicated flash memory
programmer connection pins
Other device
Output pin
Pins Used