Renesas QB-78K0MINI, Руководство пользователя

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CHAPTER 3 HARDWARE SETTINGS AND FUNCTIONS
User’s Manual U17029EJ3V0UM
20
3.1.5 Display devices
Three LEDs are included as status display devices.
Name Display Function Remark
LED1 STATUS
(RUN, BREAK, DOWNLOAD) RUN: Blinking (slow)
After break or debugger start: ON
DOWNLOAD: Blinking (fast)
Before starting debugger: OFF
Before starting
debugger When target voltage is 1.8 V or higher: ON
When target voltage is lower than 1.8 V: OFF LED2 TARGET
After starting
debugger When target voltage is POC voltage or higher: ON
When target voltage is lower than POC voltage: OFF
LED3 POWER With power supplied from host machine: ON
Without power supplied from host machine: OFF
3.2 Signal Functions of Target Interface
(1) RESET_IN
This is the target’s reset input signal.
(2) RESET_OUT
This is a reset signal output to the target device.
(3) V
DD
_IN
An interface output signal is generated when the target system’s V
DD
voltage is detected.
(4) X1 pin
This is an output signal that is used to supply the clock.
(5) X2 pin
This is a bidirectional signal used for data communications.
(6) FLMD0
This is an output signal used to overwrite the target device’s flash memory.
(7) 5 V_CHK
This is a power supply pin for the self-check board only.
Up to 50 mA can be supplied via this pin. However, since power is being supplied via the USB bus, a voltage
drop occurs when voltage is drawn via this pin. Therefore, do not supply voltage to the target device from this
pin.
(8) GND
This is a GND pin.