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HT45F43 Datasheet(PDF) 105 Page - Holtek Semiconductor Inc

Part # HT45F43
Description  8-Bit Flash MCU with Op Amps & Comparators
PDF  152 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F43 Datasheet(HTML) 105 Page - Holtek Semiconductor Inc

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OPA1 I/O status description:
The following table illustrates the OPA1 I/O settings.
A1EN
A1NS
A1PS
IO2(A1N), IO3(A1P), IO4(A1E)
0
x
x
IO2, IO3, IO4 are I/Os
1
0
0
IO2, IO3 are I/Os. A1E is OPA1 output
1
0
1
IO2 is I/O. A1P is OPA1 input, A1E is OPA1 output
1
1
0
IO3 is I/O. A1N is OPA1 input, A1E is OPA1 output
1
1
1
A1N, A1P are OPA1 inputs, A1E is OPA1 output
OPA2 Switch Control
The following diagram and table illustrate the OPA2 switch control setting and the corresponding
connections. Note that some switch control selections will force some switches to be controlled by
hardware automatically.
For example:
· The PGAEN=1 will force S6D, S7D to close and the PGAEN=0 will force S6D, S7D to open.
· When the A2EN=0, these switches, S6D, S7D and S9D, are opened by hardware, then the related
I/O pins can be used as the other functions.
Note:
S1D, S2D and S3D are for HT45F23 only.
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.
HT45F23/HT45F43
8-Bit Flash MCU with Op Amps & Comparators
Rev. 1.20
105
September 15, 2011



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