參數(shù)資料
型號： GMS87C7216Q
廠商： Electronic Theatre Controls, Inc.
元件分類： 8位微控制器
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)： 37/121頁
文件大?。?/td> 1645K
代理商： GMS87C7216Q
GMS81C7208/7216
FEB. 2005 Ver 1.04
33
In addition, port R2 is multiplexed with analog input port.
R3 and R3DD Register:
R3 is an 1-bit CMOS bidirectional I/O
port (address 0C3
H
). Each I/O pin can independently used as an
input or an output through the R3DD register (address 0CB
H
).
Each port also can be set individually as pull-up port through the
R3PU (address 0D3
H
), and as open drain register through the
R3CR (address 0D7
H
).
In addition, port R3 is multiplexed with various special features.
Port Pin
Alternate Function
R21
R22
R23
AN1 (Analog Input 1)
AN2 (Analog Input 2)
AN3 (Analog Input 3)
R2 Data Register
R2
ADDRESS: 0C2
RESET VALUE: 00
H
R23 R22 R21
Port Direction
0: Input
1: Output
R2 Direction Register
R2DD
ADDRESS: 0CA
RESET VALUE: 00
H
Input / Output Data
Port Pull-up
0: Pull-up Resistor Off
1: Pull-up Resistor On
R2 Pull-up Register
R2PU
ADDRESS: 0D2
RESET VALUE: 00
H
Port Open Drain
0: Push Pull
1: Open Drain
R2 Open Drain Control Register
R2CR
ADDRESS: 0D6
RESET VALUE: 00
H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Port Pin
Alternate Function
R30
BUZ (Buzzer driving output)
R3 Data Register
R3
ADDRESS: 0C3
RESET VALUE: 00
H
-
-
Port Direction
0: Input
1: Output
R3 Direction Register
R3DD
ADDRESS: 0CB
RESET VALUE: 00
H
-
-
Input / Output data
Port Pull-up
0: Pull-up Resistor Off
1: Pull-up Resistor On
R3 Pull-up Register
R3PU
ADDRESS: 0D3
RESET VALUE: 00
H
-
-
Port Open Drain
0: Push Pull
1: Open drain
R3 Open Drain Control Register
R3CR
ADDRESS: 0D7
RESET VALUE: 00
H
-
-
R30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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