參數(shù)資料
型號： GMS87C7216LQ
廠商： Electronic Theatre Controls, Inc.
元件分類： 數(shù)學(xué)處理器
英文描述： 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述： 8位單晶片微控制器
文件頁數(shù)： 91/121頁
文件大?。?/td> 1645K
代理商： GMS87C7216LQ
GMS81C7208/7216
FEB. 2005 Ver 1.04
87
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
SW1
-
Emulator Reset Switch. Reset the Emulator.
Reset the Emulator.
SW2
1
Pod RESET pin configuration
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.
2
Pod XOUT pin configuration
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
SW4
1
2
3
External Bias Resistors Connection
Must be
ON
position.
It serves the external bias resistors.
If this switches are turned off, LCD
bias voltage does not supplied,
floated because there are no inter-
nal bias resistors and bias Tr. inside
the Emulator.
4
5
6
LCD Voltage doubling circuit.
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
8
81Cx detect the VDD voltage but Emulator can not do because
Emulator can not operate if V
DD
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.
Position
ON
during normal opera-
tion.
ON
: Normal operation
OFF
: Force to detect the LVD, refer
to "23. POWER FAIL PROCES-
SOR" on page 82.
SW2-1
RESET pin
EVA.
Chip
SW2-2
XOUT pin
EVA.
Chip
Oscillator
VCL1
VCL2
BIAS
External Resistor
and Capacitor
EVA. Chip Internal
VCL0
V
SS
V
DD
Adjust Contrast
SW4-1
SW4-2
SW4-3
0.47uF
×
3
10k
×
3
VR1 50k
SW4
SW4-8
V
DD
EVA.
Chip
LVD pin
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