HY12S65
HY-IDE Hardware User Manual
© 2012 HYCON Technology Corp
www.hycontek.com APD-HYIDE011-V02_EN
page8
3.2. Circuit Description
Below is the description of Figure 3 connector:
J14: Connects to J1 PS2 communication port of HY-IDE USB Control Board. PC
gives commands to HY12S65 through Control Board. It can download program to
SRAM and can perform single execution, Free RUN…etc. debugging functions.
S5: ICE board power selection (voltage from USB Control Board)
VIN -When switched to ON, it represents VIN~3V voltage.
VDD_bat - when switched to ON, it represents VDD_bat~3V voltage.
VDD_i - when switched to ON, it represents VDD_i~3V voltage.
Setup Ways of Power Selection：
PC can supply power to ICE Board via USB or from external power sources.
When it is powered by USB, the switches of S5 VIN and VDD_bat must turn to ON
When it is powered by external power source, it must be connected though
HY-IDE ICE Board Batt (JP1/JP2) and the switch of VDD_bat and VDD_i must be
turned to OFF.
J11: Can set up whether to short VIN and VDD_bat
U7 & U8: SRAM
J1 & J2: Program capacity selection of IC emulation chip
HY12S65 ROM Size is16k Word (32K Byte), thus when HY12S65 is chosen, J8
PIN 1-2 and J9 PIN 1-2 must be shorted
When using HY12P series that has 8K Word (16K Byte) ROM Size or under, J8
PIN 2-3 and J9 PIN 2-3 must be shorted
Y1, R39, C15 and C16 : connects to external crystal and peripheral capacitors
and resistors
C24: VDD power input regulated capacitor is recommended to keep in between
1uF to 10uF
C13: VLCD power output regulated capacitor is recommended to keep in
between 1uF ~ 4.7uF
C4, C5, C10, C11, C12, C13 and C14: Analog power regulated capacitor
In order to enhance the operation performance of ADC, the regulated capacitor is
suggested to locate as closer to the pin as possible.
C4：REFO-AGND capacitor: 100nF
C5：AGND capacitor: 100nF
C10：VGG capacitor: 1uF
C11：VDDA capacitor: 1uF
C12：CA & CB capacitor: 100nF
C13：VLCD capacitor: 1uF
C14：ACM capacitor: 100nF
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