upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 218

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

16.6.3 Port pins
same status as that immediately after reset. If external devices connected to the ports do not recognize the port
status immediately after reset, the port pin must be connected to V
16.6.4 Power supply
218
When the flash memory programming mode is set, all the pins not used for flash memory programming enter the
The state of the pins in the self programming mode is the same as that in the HALT mode.
Connect the V
DD
78K0S/KY1+
pin to V
RESET
DD
of the flash programmer, and the V
In the flash memory programming mode, the signal output by the reset
signal generator collides with the signal output by the dedicated flash
programmer. Therefore, isolate the signal of the reset signal generator.
Figure 16-8. Signal Collision (RESET Pin)
Signal collision
CHAPTER 16 FLASH MEMORY
User’s Manual U16994EJ3V0UD
Reset signal generator
Dedicated flash programmer
connection signal
Output pin
SS
DD
pin to V
or V
SS
SS
via a resistor.
of the flash programmer.