HY12S65
HY-IDE Hardware User Manual
© 2012 HYCON Technology Corp
www.hycontek.com
Power
system
：
ICE power system can be supply by 3V regulated power of HY-IDE USB
Control Board or by external input power
(the external power input cannot
exceed 3.6V as the datasheet specified).
When ICE emulates, it only need to
connect U7 USB of HY-IDE USB Control Board to PC end to supply ICE power.
USB power and external power will be introduced in below:
USB
power
：
When using USB power supply, VDD_bat and VDD_i switch of HY-IDE ICE
Board S5 must be turned to ON so that ICE can be powered by 3V USB
regulated voltage.
To measure IC consumption current, the switch must configure VIN and
VDD_bat to ON and power by USB regulated 3V and measure the current
consumption from J1 of HY-IDE ICE Board.
External
Power
：
Users must be careful when using external power, the VIN, VDD_bat and
VDD_i option of S5 switch of HY-IDE ICE Board must be switched to OFF status
first.
External power can be input from JP1 VBAT positive end, VSSBAT negative
end of HY-IDE ICE Board and S3 is the power on/off control.
J2: power select (whether the system power passes through Regulator
(U1))
J2 PIN 1-2 short means, inputting VBAT external power input to U1,
supplying the whole system regulated 3V power from VDD_i (to change
output voltage, R40, R41 & R42, its equation is:
)
42
41
40
1
(
240
.
1
V
OUT
R
R
R
V
).
J2 PIN 2-3 short means, VBAT power directly input to VDD_i
(the
external power input cannot exceed 3.6V as the datasheet specified).
J1: Can connect to current meter, testing the whole VDD_i current
consumption. It must be shorted if current meter was not connected,
VDD_bat voltage will equals to that of VDD_i, as shown in Figure 4.
Users must pay attention that
VDD_bat voltage will equal to VDD_i
voltage when J1 short. If using external power, then VIN, VDD_bat and
VDD_i options of S5 switch must be switched to OFF status to continue
the following operations as to prevent hardware damage resulted from
power backflow of HY-IDE USB Control Board, showing in Figure 4.
APD-HYIDE011-V02_EN
page9
.
