GMS81C5108
DIP Switch and VR Setting
Before execute the user program, keep in your mind the below configuration
DIP S/W, VR
Description
ON/OFF Setting
Reset the Emulator.
Normally OFF.
SW1
-
Emulator Reset Switch. Reset the Emulator.
EVA. chip can be reset by external
user target system board.
ON : Reset is available by user
target system board.
OFF : MCU is reset by REST switch
on EVA. board.
SW2-1
EVA.
Chip
RESET pin
1
OFF ON
SW2
Normally OFF.
MCU XOUT pin are disconnected
by Emulator internally. Some cir-
cumstance user may connect this
circuit.
SW2-2
XOUT pin
EVA.
Chip
2
Oscillator
ON : Output XOUT signal
OFF : Disconnect circuit
External Resistor
and Capacitor
V
DD
Adjust Contrast
Normally ON.
VR1 50kΩ
SW4-1
SW4-2
SW4-3
It serves the external bias resistors.
If user want to use external circuit
instead of internal R, turn on these
switches.
1
2
3
VCL2
10kΩ × 3
VCL1
VCL0
OFF ON
0.47uF × 3
V
SS
SW4
4
5
6
Must be ON position.
It is used for the GMS81C5108.
LCD Voltage booster circuit.
Select the Stack Page.
Must be OFF position.
This switch decide the Stack page 0
(off) or page 1 (on).
7
ON : For the GMS81C7XXX
OFF : For the GMS81C5108
V
DD
SW4-8
LVD pin
EVA.
Chip
Position ON during normal opera-
tion.
ON : Normal operation
OFF : Force to detect the LVD, refer
to "23. SUPPLY VOLTAGE DETEC-
TION" on page 82.
8
GMS81C5108 detect the VDD voltage but Emulator can not do
because Emulator can not operate if VDD is below normal opr.
voltage (5V), This switch serves LVD environment through the
applying 0V to LVD pin of EVA. chip during 5V normal operation.
JUNE 2001 Ver 1.0
85
HYNIX [ HYNIX SEMICONDUCTOR ]
