EM78P153EP Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM78P153EP
ELAN Microelectronics
EM78P153EP Datasheet PDF : 38 Pages
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EM78P153E
OTP ROM
1: enabled by ENI/RETI instructions
• Bit 7 Not used.
• CONT register is both readable and writable.
3. IOC5 ~ IOC6 (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.
• Only the lower 4 bits of IOC5 are available to be defined.
• IOC5 and IOC6 registers are both readable and writable.
4. IOCB (Pull-down Control Register)
7
6
5
4
3
2
-
/PD6
/PD5
/PD4
-
/PD2
• Bit 0 (/PD0) Control bit is used to enable the pull-down of P50 pin.
0: Enable internal pull-down
1: Disable internal pull-down
• Bit 1 (/PD1) Control bit is used to enable the pull-down of P51 pin.
• Bit 2 (/PD2) Control bit is used to enable the pull-down of P52 pin.
• Bit 3 Not used.
• Bit 4 (/PD4) Control bit is used to enable the pull-down of P60 pin.
• Bit 5 (/PD5) Control bit is used to enable the pull-down of P61 pin.
• Bit 6 (/PD6) Control bit is used to enable the pull-down of P62 pin.
• Bit 7 Not used.
• IOCB Register is both readable and writable.
1
/PD1
0
/PD0
5. IOCC (Open-drain Control Register)
7
6
5
4
3
2
1
0
OD7
OD6
OD5
OD4
-
OD2
OD1
OD0
• Bit 0 (OD0) Control bit is used to enable the open-drain of P60 pin.
0: Disable open-drain output
1: Enable open-drain output
• Bit 1 (OD1) Control bit is used to enable the open-drain of P61 pin.
• Bit 2 (OD2) Control bit is used to enable the open-drain of P62 pin.
• Bit 3 Not used.
• Bit 4 (OD4) Control bit is used to enable the open-drain of P64 pin.
• Bit 5 (OD5) Control bit is used to enable the open-drain of P65 pin.
• Bit 6 (OD6) Control bit is used to enable the open-drain of P66 pin.
• Bit 7 (OD7) Control bit is used to enable the open-drain of P67 pin.
This specification is subject to change without prior notice.
11
2002/03/01
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