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參數(shù)資料
| 型號： | GMS81508BQ |
| 廠商： | Hynix Semiconductor 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)： | 39/110頁 |
| 文件大?。?/td> | 1980K |
| 代理商： | GMS81508BQ |
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GMS81508B/16B/24B, GMS82512/16/24
36
MAY. 2001 Ver 2.0
R5 and R5DD register:
R5 is an 8-bit CMOS bidirection-
al I/O port (address 0CA
H
). Each I/O pin can independent-
ly used as an input or an output through the R5DD register
(address 0CB
H
).
The control register PMR5 (address D1
H
) controls the se-
lection alternate function. After reset, this value is “0”, port
may be used as general I/O ports. To use buzzer function,
write “1” to the PMR5 and the pin R55 must be defined as
output mode (the bit 5 of R5DD=1).
Also, Port R5 can be used to alternate function by SI-
OM(address 0EAH) and PWMCR(0F2H).
R50~R53, R56 and R57 are NOT served on GMS825xx.
R6 and R6DD register:
R6 is an 8-bit CMOS bidirection-
al I/O port (address 0CC
H
). Each I/O pin can independent-
ly used as an input or an output through the R6DD register
(address 0CD
H
).
R60~R63 are NOT served on GMS825xx.
R6DD (address CD
H
) controls the direction of the R6 pins,
even when they are being used as analog inputs. The user
must make sure to keep the pins configured as inputs when
using them as analog inputs.
Note:
On the MDS(Choice-Dr,Jr), when the MCU is RE-
SET, R60 can not be used digital input port, because this
port is selected as an analog input port by ADCM register.
To use this port as a digital I/O port, change the value of
lower 4 bits of ADCM (address 0E8
H
). On the other hand,
R6 port, all eight pins can not be used as digital I/O port si-
multaneously on the MDS. At least one pin is used as an
analog input. But on the OTP and Main chip, R6 port, all
eight pins can be used as digital I/O port at the same time.
Port Pin
Alternate Function
R50
R51
R52
R53
R54
R55
R56
R57
SIN(Serial data input)
SOUT(Serial data output)
SCLK(Serial clock)
SRDY(ready signal)
WDTO (Watchdog timer output)
BUZ (Square-wave output for buzzer)
PWM0
PWM1
R5 Port Mode Register
PMR5
ADDRESS: 0D1
RESET VALUE: --00----
B
-
-
-
-
R54/WDTO Selection
0: R54
1: WDTO (Output)
BUZ
-
-
R55/BUZ Selection
0: R55
1: BUZ (Output)
WDTO
R5 Data Register
R5
ADDRESS: 0CA
RESET VALUE: Undefined
R57 R56 R55 R54 R53 R52 R51 R50
Port Direction
0: Input
1: Output
R5 Direction Register
R5DD
ADDRESS: 0CB
RESET VALUE: 00
H
Input / Output data
Port Pin
Alternate Function
R60
R61
R62
R63
R64
R65
R66
R67
AN0 (ADC input 0)
AN1 (ADC input 1)
AN2 (ADC input 2)
AN3 (ADC input 3)
AN4 (ADC input 4)
AN5 (ADC input 5)
AN6 (ADC input 6)
AN7 (ADC input 7)
R6 Data Register
R6
ADDRESS: 0CC
RESET VALUE: Undefined
R67 R66 R65 R64 R63 R62 R61 R60
Port Direction
0: Input
1: Output
R6 Direction Register
R6DD
ADDRESS: 0CD
RESET VALUE: 0000----
B
-
-
Input / Output data
-
-
R60~R63 are input
only
Input data
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