GMS81C7216 Datasheet, PDF (91/121 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C7208/7216
DIP Switch and VR Setting
Before execute the user program, keep in your mind the below configuration
DIP S/W, VR
SW1
-
Description
Emulator Reset Switch. Reset the Emulator.
SW2
SW2-1
EVA.
Chip
1
Pod RESET pin configuration
RESET pin
SW2-2
2
EVA.
Chip
XOUT pin
Oscillator
Pod XOUT pin configuration
External Bias Resistors Connection
ON/OFF Setting
Reset the Emulator.
Normally OFF.
EVA. chip can be reset by external
user target board.
ON : Reset is available by either
user target system board or Emula-
tor RESET switch.
OFF : Reset the MCU by Emulator
RESET switch. Does not work from
user target board.
Normally OFF.
MCU XOUT pin is disconnected
internally in the Emulator. Some cir-
cumstance user may connect this
circuit.
ON : Output XOUT signal
OFF : Disconnect circuit
EVA. Chip Internal
V_DD
Adjust Contrast
BIAS
SW4
VR1 50kΩ Must be ON position.
VCL2
SW4-1
It serves the external bias resistors.
1
If this switches are turned off, LCD
2
SW4-2
bias voltage does not supplied,
VCL1
3
10kΩ × 3
floated because there are no inter-
VCL0
SW4-3
nal bias resistors and bias Tr. inside
the Emulator.
0.47uF × 3
V_SS
External Resistor
and Capacitor
SW4
4
5 LCD Voltage doubling circuit.
6
Must be OFF position.
It is reserved for the GMS81C5108.
7 Select the Stack Page.
Must be ON position.
This switch select the Stack page 0
(off) or page 1 (on).
ON : For the 81C7XXX
OFF : For the GMS81C5108
V_DD
EVA.
Chip
SW4-8
LVD pin
Position ON during normal opera-
tion.
8
ON : Normal operation
OFF : Force to detect the LVD, refer
81Cx detect the VDD voltage but Emulator can not do because _{to "23. POWER FAIL PROCES-}
Emulator can not operate if V_DD is below normal opr. voltage
SOR" on page 82.
(5V), This switch serves LVD environment through the applying
0V to LVD pin of EVA. chip during 5V normal operation.
FEB. 2005 Ver 1.04
87