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參數(shù)資料
| 型號： | EM78467 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | 8-Bit Micro-Controller for Telecom Product(用于無繩電話的帶4K × 13片上ROM，工作電壓2.5V-5.5V的8位微控制器) |
| 中文描述： | 8位微控制器的電信產(chǎn)品（用于無繩電話的帶4K的× 13片上ROM的，工作電壓為2.5V至5.5V的8位微控制器） |
| 文件頁數(shù)： | 8/19頁 |
| 文件大小： | 138K |
| 代理商： | EM78467 |
* This specification are subject to be changed without notice.
EM78267/467A/B/C
8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
8
9.30.1997
Bits 0~5, 7 of CONT register are readable and writable.
IOC5 ~ IOC7 (I/O Port Control Register)
“
1
”
put the relative I/O pin into high impedance, while
“
0
”
put the relative I/O pin as output.
IOC5 ~ IOC7 are three I/O direction control registers. In case of EM78267/467A, only IOC7, IOC6 and lower
four bits of IOC5 are used.
IOCB ( Wake-up Control Register for Port 6 )
7
6
/WUE7
/WUE6
Bit0 ( /WUE0 ) Control bit used to enable the wake-up function of P60 pin.
0 : Enable wake-up function.
1 : Disable wake-up function.
Bit1 ( /WUE1 ) Control bit used to enable the wake-up function of P61 pin.
Bit2 ( /WUE2 ) Control bit used to enable the wake-up function of P62 pin.
Bit3 ( /WUE3 ) Control bit used to enable the wake-up function of P63 pin.
Bit4 ( /WUE4 ) Control bit used to enable the wake-up function of P64 pin.
Bit5 ( /WUE5 ) Control bit used to enable the wake-up function of P65 pin.
Bit6 ( /WUE6 ) Control bit used to enable the wake-up function of P66 pin.
Bit7 ( /WUE7 ) Control bit used to enable the wake-up function of P67 pin.
IOCB register is readable and writable.
5
4
3
2
1
0
/WUE5
/WUE4
/WUE3
/WUE2
/WUE1
/WUE0
IOCE (WDT Control Register)
7
-
6
5
4
3
2
-
1
-
0
ODE
WTE
SLPC
ROC
WUE
Bit 6 (ODE)
Open-drain control bit.
0: Both P76 and P77 are normal I/O pins.
1: Both P76 and P77 pins have open-drain output.
ODE bit is readable and writable.
Bit 5 (WTE)
Control bit used to enable Watchdog timer.
WTE bit is used only if the CODE Option bit WTC is
“
1
”
. If WTC bit is
“
1
”
, then WDT is disabled/enabled
by WTE bit.
0: Disable WDT
1: Enable WDT
WTE bit is not used if the CODE Option bit WTC is
“
0
”
. That is, if WTC bit is
“
0
”
, WDT is always disabled
no matter what the WTE bit is.
WTE bit is readable and writable.
Bit 4 (SLPC)
This bit is set by hardware at the falling edge of wake-up signal and is cleared by software. SLPC is
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