upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 391

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

23.5 Handling of Pins on Board
the target system. First provide a function that selects the normal operation mode or flash memory programming
mode on the board.
the same status as immediately after reset. Therefore, if the external device does not recognize the state immediately
after reset, the pins must be handled as described below.
23.5.1 FLMD0 pin
write voltage is supplied to the FLMD0 pin. An FLMD0 pin connection example is shown below.
23.5.2 FLMD1 pin
the flash memory programming mode is entered, so the same voltage as V
FLMD1 pin connection example is shown below.
To write the flash memory on-board, connectors that connect the dedicated flash programmer must be provided on
When the flash memory programming mode is set, all the pins not used for programming the flash memory are in
In the normal operation mode, 0 V is input to the FLMD0 pin. In the flash memory programming mode, the V
When 0 V is input to the FLMD0 pin, the FLMD1 pin does not function. When V
78K0/KC1+
FLMD1
78K0/KC1+
In the flash memory programming mode, the signal output by the device
collides with the signal sent from the dedicated flash programmer.
Therefore, isolate the signal of the other device.
FLMD0
Figure 23-10. FLMD1 Pin Connection Example
Figure 23-9. FLMD0 Pin Connection Example
Signal collision
CHAPTER 23 FLASH MEMORY
User’s Manual U16961EJ4V0UD
Dedicated flash programmer connection pin
Dedicated flash programmer
connection pin
Other device
Output pin
SS
must be supplied to the FLMD1 pin. An
DD
is supplied to the FLMD0 pin,
391
DD