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參數(shù)資料
| 型號： | GMS87C2020LQ |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| 中文描述： | CMOS單芯片8位微控制器與A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 12/107頁 |
| 文件大小： | 1482K |
| 代理商： | GMS87C2020LQ |
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HMS81C2012A/2020A
8
SEP. 2004 Ver 2.00
5. PIN FUNCTION
V
DD
: Supply voltage.
V
SS
: Circuit ground.
AV
DD
: Supply voltage to the ladder resistor of ADC cir-
cuit. To enhance the resolution of analog to digital convert-
er, use independent power source as well as possible, other
than digital power source.
AV
SS
: ADC circuit ground.
RESET
: Reset the MCU.
X
IN
: Input to the inverting oscillator amplifier and input to
the internal clock operating circuit.
X
OUT
: Output from the inverting oscillator amplifier.
RA(V
disp
)
: RA is one-bit high-voltage input only port pin.
In addition, RA serves the functions of the V
disp
special
features. V
disp
is used as a high-voltage input power supply
pin when selected by the mask option.
R00~R07
: R0 is an 8-bit high-voltage CMOS bidirectional
I/O port. R0 pins 1 or 0 written to the Port Direction Reg-
ister can be used as outputs or inputs. In addition, R0
serves the functions of the various following special fea-
tures.
R10~R17
: R1 is an 8-bit high-voltage CMOS bidirectional
I/O port. R1 pins 1 or 0 written to the Port Direction Reg-
ister can be used as outputs or inputs.
R20~R27
: R2 is an 8-bit high-voltage CMOS bidirectional
I/O port. R2 pins 1 or 0 written to the Port Direction Reg-
ister can be used as outputs or inputs.
R30~R35
: R3 is a 6-bit high-voltage CMOS bidirectional
I/O port. R3 pins 1 or 0 written to the Port Direction Reg-
ister can be used as outputs or inputs.
R40~R43
: R4 is a 4-bit CMOS bidirectional I/O port. R4
pins 1 or 0 written to the Port Direction Register can be
used as outputs or inputs. In addition, R4 serves the func-
tions of the following special features.
R50~R57
: R5 is an 8-bit CMOS bidirectional I/O port. R5
pins 1 or 0 written to the Port Direction Register can be
used as outputs or inputs. In addition, R5 serves the func-
tions of the various following special features.
R60~R67
: R6 is an 8-bit CMOS bidirectional I/O port. R6
pins 1 or 0 written to the Port Direction Register can be
used as outputs or inputs. In addition, R6 is shared with the
ADC input.
R70~R73
: R7 is a 4-bit CMOS bidirectional I/O port. R6
pins 1 or 0 written to the Port Direction Register can be
used as outputs or inputs. In addition, R7 is shared with the
ADC input.
SX
IN
: Input to the internal subsystem clock operating cir-
cuit. In addition, SXIN serves the R74 pin when selected
by the code option. *R74 has a Pull-up circuit.
SX
OUT
: Output from the inverting subsystem oscillator
amplifier. In addition, SXOUT serves the R75 pin when
Port pin
Alternate function
RA
V
disp
(High-voltage input power supply)
Port pin
Alternate function
R00
R01
R02
R03
INT0 (External interrupt 0)
INT1 (External interrupt 1)
EC0 (Event counter input)
BUZO (Buzzer driver output)
Port pin
Alternate function
R40
T0O (Timer/Counter 0 output)
Port pin
Alternate function
R53
R54
R55
R56
SCLK (Serial clock)
SIN (Serial data input)
SOUT (Serial data output)
PWM1O (PWM1 Output)
T1O (Timer/Counter 1 output)
Port pin
Alternate function
R60
R61
R62
R63
R64
R66
R66
R67
AN0 (Analog Input 0)
AN1 (Analog Input 1)
AN2 (Analog Input 2)
AN3 (Analog Input 3)
AN4 (Analog Input 4)
AN5 (Analog Input 5)
AN6 (Analog Input 6)
AN7 (Analog Input 7)
Port pin
Alternate function
R70
R71
R72
R73
AN8 (Analog Input 8)
AN9 (Analog Input 9)
AN10 (Analog Input 10)
AN11 (Analog Input 11)
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