upd78f0124hgba1-8et-a Renesas Electronics Corporation., upd78f0124hgba1-8et-a Datasheet - Page 394

• Manufacturer Part Number: upd78f0124hgba1-8et-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

24.5 Connection
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.
24.5.1 FLMD0 pin
write voltage is supplied to the FLMD0 pin. An FLMD0 pin connection example is shown below.
24.5.2 FLMD1 pin
the flash memory programming mode is entered, so the FLMD1 pin must be the same voltage as V
connection example is shown below.
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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
of Pins on Board
78K0/KD1+
FLMD1
78K0/KD1+
If the V
on-board writing and immediately after reset, isolate this signal.
FLMD0
Figure 24-10. FLMD1 Pin Connection Example
Figure 24-9. FLMD0 Pin Connection Example
DD
Signal collision
User’s Manual U16962EJ3V0UD
signal is input to the FLMD1 pin from another device during
CHAPTER 24 FLASH MEMORY
Dedicated flash programmer connection pin
Dedicated flash programmer
connection pin
Other device
Output pin
DD
is supplied to the FLMD0 pin,
SS
. An FLMD1 pin
DD