EM78P157NBM View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
Manufacturer
EM78P157NBM Datasheet PDF : 56 Pages
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EM78P157N
8-Bit Microcontroller with OTP ROM
4.2.5 Pull-Down Control (IOCB) Register
Bit 7
/PD7
Bit 6
/PD6
Bit 5
/PD5
Bit 4
/PD4
Bit 3
-
Bit 2
/PD2
Bit 1
/PD1
IOCB Register is both readable and writable.
Bit 0 (/PD0): Control bit is used to enable the P50 pin pull-down
0: Enable internal pull-down
1: Disable internal pull-down
Bit 1 (/PD1): Control bit is used to enable the P51 pin pull-down
Bit 2 (/PD2): Control bit is used to enable the P52 pin pull-down
Bit 3:
Not used
Bit 4 (/PD4): Control bit is used to enable the P60 pin pull-down
Bit 5 (/PD5): Control bit is used to enable the P61 pin pull-down
Bit 6 (/PD6): Control bit is used to enable the P62 pin pull-down
Bit 7 (/PD7): Control bit is used to enable the P63 pin pull-down
Bit 0
/PD0
4.2.6 Open-Drain Control (IOCC ) Register
Bit 7
OD7
Bit 6
OD6
Bit 5
OD5
Bit 4
OD4
Bit 3
OD3
Bit 2
OD2
Bit 1
OD1
IOCC Register is both readable and writable.
Bit 0 (OD0): Control bit is used to enable the P60 pin open-drain
0: Disable open-drain output
1: Enable open-drain output
Bit 1 (OD1): Control bit is used to enable the P61 pin open-drain
Bit 2 (OD2): Control bit is used to enable the P62 pin open-drain
Bit 3 (OD3): Control bit is used to enable the P63 pin open-drain
Bit 4 (OD4): Control bit is used to enable the P64 pin open-drain
Bit 5 (OD5): Control bit is used to enable the P65 pin open-drain
Bit 6 (OD6): Control bit is used to enable the P66 pin open-drain
Bit 7 (OD7): Control bit is used to enable the P67 pin open-drain
Bit 0
OD0
10 •
Product Specification (V1.0) 09.22.2005
(This specification is subject to change without further notice)
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