Renesas QB-MINI2 User Manual page 72

(2) Automatically switching the reset signal via selector logic (Only for devices that have no FLMDPUP
<R>
register but have a FLMD0 pin)
Figure 4-17 illustrates the circuit connection for the case where the reset signal is switched automatically using
the selector logic, with or without MINICUBE2 connected. When using flash self programming, refer to Figure
4-18.
Caution The reset circuit is disconnected if flash self programming is performed (FLMD0 = HI) without
Figure 4-17.
Target connector Target connector
Note FLMD0 is high level when MINICUBE2 is connected, and FLMD0 is pulled down when MINICUBE2 is
not connected.
Figure 4-18.
Target connector Target connector
Note This circuit is designed for flash self programming, which controls the FLMD0 pin via ports.
70
CHAPTER 4 HOW TO USE MINICUBE2 WITH 78K0 MICROCONTROLLER
MINICUBE2 connected, so no signals can be input to the _RESET pin.
Circuit Connection for Automatically Switching Reset Signal with Selector Logic
(When Not Using Flash Self Programming)
1 to 10 kΩ 1 to 10 kΩ
RESET_OUT RESET_OUT
RESET_IN RESET_IN
FLMD0 FLMD0 Note Note
1 to 10 kΩ 1 to 10 kΩ
Circuit Connection for Automatically Switching Reset Signal with Selector Logic
(When Using Flash Self Programming)
RESET_OUT RESET_OUT
RESET_IN RESET_IN
FLMD0 FLMD0
10 kΩ 10 kΩ
User's Manual
V V
DD DD
Selector Selector
A A
B B
HI: Side A HI: Side A
LOW: Side B LOW: Side B
V V
DD DD
10 kΩ 10 kΩ
A A
B B
HI: Side A HI: Side A
LOW: Side B LOW: Side B
1 kΩ 1 kΩ
U18371EJ5V0UM
Target device Target device
_RESET _RESET
Reset connector Reset connector
RESET signal RESET signal
Target device Target device
_RESET _RESET
FLMD0 FLMD0
Note Note
Port X Port X
Reset connector Reset connector
RESET signal RESET signal