HT45F12 datasheet(69/104 Pages) HOLTEK

69 / 104 page

Rev. 0.00

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Rev. 0.00

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HT45F12

8-Bit Flash MCU with Op Amps & Comparators

HT45F12

8-Bit Flash MCU with Op Amps & Comparators

OPA1&I/Ostatusdescription:

ThefollowingtableillustratestheOPA1&I/Osettings.

A1EN

A1NS

A1PS

Description

PA� and PA3 and PA4 a�e I/Os

PA� and PA3 a�e I/Os� PA4 is OPA1 A1E out�ut

PA3 is I/O. PA� is OPA1 A1P in�ut� PA4 is OPA1 A1E out�ut

PA� is I/O. PA3 is OPA1 A1N in�ut� PA4 is OPA1 A1E out�ut

PA� is OPA1 A1P in�ut and PA3 is OPA1 A1N in�ut� PA4 is OPA1

A1E out�ut

OPA2 Switch Control

ThefollowingdiagramandtableillustratetheOPA2switchcontrolsettingandthecorresponding

connections.Notethatsomeswitchcontrolselectionswillforcesomeswitchestobecontrolledby

hardwareautomatically.

Forexample:

• ThePGAEN=1willforceS6D,S7DtocloseandthePGAEN=0willforceS6D,S7Dtoopen.

• WhentheA2EN=0,theseswitches,S6D,S7DandS9D,areopenedbyhardware,thentherelated

I/Opinscanbeusedastheotherfunctions.

OPA2

A2E

A2N

A2P

S1D

A2OP

A2OEN

CMP1

CMP2

VL1

VH1

A2O2CIN

A2O2N

A1O2A2N

OPA1

10K

S2D

560K

S6D

S7D

S8D

S9D

S10D

S11D

A2NS

A2PS

S12D

S13D

S14D

A2RS

A2OFM

S1D S2D S3D

ON OFF

OFF

ON OFF

OFF ON

S3D

S4D

S5D

A1O2A2P

Switch priority : S4D > S11D > (S12D, S13D, S14D); If A2PS=1, S11D~S14D will be opened by hardware.

Switch priority : S5D > S8D; If A2NS=1, S8D will be opened by hardware.

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