upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 763

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

21.8.2 Flash memory programming mode
To rewrite the contents of the flash memory by using the dedicated flash programmer, set the
V850E/RS1 in the flash memory programming mode.
To set the mode, set the FLMD0 and FLMD1 pins, and release reset.
Change the mode by using a jumper when performing on-board writing.
Note: The number of clocks to be inserted differs depending on the communication mode. For details,
TXDA0 (output)
RESET (input)
RXDA0 (input)
FLMD1 (input)
FLMD0 (input)
refer to Table 21-4, “List of Communication Modes,” on page 764.
V
DD
V
V
V
V
V
V
0 V
0 V
0 V
0 V
0 V
0 V
DD
DD
DD
DD
DD
DD
Figure 21-13: Flash Memory Programming Mode
Power
supply
ON
User’s Manual U16702EE3V2UD00
Chapter 21 Flash Memory
Reset
Oscillation
stabilized
Communication
mode selection
(Note)
Flash control command communication
(such as erase and write)
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