upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 409

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

16.5.3 RESET pin
reset signal generator on-board, conflict of signals occurs. To avoid the conflict of signals, isolate the connection to
the reset signal generator.
operation will not be performed correctly. Therefore, do not input signals other than the reset signals from the
dedicated flash programmer.
16.5.4 Port pin (including NMI)
dedicated flash programmer become output high-impedance status.
impedance status should occur to the external devices connected to the port, connect them to V
16.5.5 Other signal pins
16.5.6 Power supply
programmer has a power supply monitoring function).
When connecting the reset signals of the dedicated flash programmer to the RESET pin that is connected to the
When a reset signal is input from the user system in the flash memory programming mode, the programming
When the flash memory programming mode is set, all the port pins except the pins that communicate with the
Connect X1, X2, XT2, and AV
Supply the same power supply (V
In addition, connect V
V850/SA1
DD
RESET
and V
REF
SS
Figure 16-10. Conflict of Signals (RESET Pin)
to the same status as that in the normal operation mode.
DD
to V
, V
In the flash memory programming mode, the
signal the reset signal generator outputs conflicts
with the signal the dedicated flash programmer
outputs. Therefore, isolate the signals on the
reset signal generator.
Conflict of signals
SS
DD
CHAPTER 16 FLASH MEMORY
, AV
and GND of the dedicated flash programmer (V
User’s Manual U12768EJ4V1UD
DD
, AV
SS
, BV
DD
Dedicated flash programmer connection pin
Reset signal generator
, BV
Output pin
SS
) as when in normal operation mode.
If problems such as disabling output high-
DD
DD
of the dedicated flash
or V
SS
via resistors.
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