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EM78P447NAM Datasheet(PDF) 13 Page - ELAN Microelectronics Corp

Part # EM78P447NAM
Description  8-BIT MICRO-CONTROLLER
Download  57 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P447NAM Datasheet(HTML) 13 Page - ELAN Microelectronics Corp

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EM78P447N
OTP ROM
0: TCC
1: WDT
• Bit 2 (PSR2) ~ Bit 0 (PSR0) TCC/WDT prescaler bits.
PSR2
PSR1
PSR0
TCC Rate
WDT Rate
0
0
0
1:2
1:1
0
0
1
1:4
1:2
0
1
0
1:8
1:4
0
1
1
1:16
1:8
1
0
0
1:32
1:16
1
0
1
1:64
1:32
1
1
0
1:128
1:64
1
1
1
1:256
1:128
3. IOC5 ~ IOC7 (I/O Port Control Register)
• "1" put the relative I/O pin into high impedance, while "0" defines the relative I/O pin as output.
• IOC5 and IOC7 registers are both readable and writable.
4. IOCB (Wake-up Control Register for Port6)
7
6
5
4
3
2
1
0
/WUE7
/WUE6
/WUE5
/WUE4
/WUE3
/WUE2
/WUE1
/WUE0
• Bit 7 (/WUE7) Control bit is used to enable the wake-up function of P67 pin.
• Bit 6 (/WUE6) Control bit is used to enable the wake-up function of P66 pin.
• Bit 5 (/WUE5) Control bit is used to enable the wake-up function of P65 pin.
• Bit 4 (/WUE4) Control bit is used to enable the wake-up function of P64 pin.
• Bit 3 (/WUE3) Control bit is used to enable the wake-up function of P63 pin.
• Bit 2 (/WUE2) Control bit is used to enable the wake-up function of P62 pin.
• Bit 1 (/WUE1) Control bit is used to enable the wake-up function of P61 pin.
• Bit 0 (/WUE0) Control bit is used to enable the wake-up function of P60 pin.
0: Enable internal wake-up.
1: Disable internal wake-up.
• IOCB Register is both readable and writable.
5. IOCE (WDT Control Register)
7
6
5
4
3
2
1
0
-
ODE
WDTE
SLPC
ROC
-
-
/WUE
• Bit 6 (ODE) Control bit is used to enable the open-drain of P76 and P77 pins
0: Disable open-drain output.
This specification is subject to change without prior notice.
10.21.2004 (V1.0)
13


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