Figure 24-12: Conflict Of Signals (Serial Interface Input Pin); Table 24-7: Pins Used By Serial Interfaces - NEC V850E/PH2 User Manual

(3) Serial interface pin
The following shows the pins used by each serial interface.
When connecting a dedicated flash 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 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.

Figure 24-12: Conflict of Signals (Serial Interface Input Pin)

V850E/PH2
Input pin
1000
Chapter 24 Flash Memory

Table 24-7: Pins Used by Serial Interfaces

Serial Interface
UARTC0
CSIB0
CSIB0 + HS
Conflict of signals
In the flash memory programming mode, the signal that the dedicated flash
programmer sends out conflicts with signals another device outputs.
Therefore, isolate the signals on the other device side.
User's Manual U16580EE3V1UD00
Used Pins
TXDC0, RXDC0
SOB0, SIB0, SCKB0
SOB0, SIB0, SCKB0, PCM0
Dedicated flash programmer
connection pins
Other device
Output pin