HT45F23 Datasheet, PDF (106/152 Pages) Holtek Semiconductor Inc – 8-Bit Flash MCU with Op Amps & Comparators

HT45F23/HT45F43
8-Bit Flash MCU with Op Amps & Comparators
OPA2 switch control:
The following table illustrates the relationship between OPA2 control register settings and the
switches:
· HT45F23
OPA2 Control Bits in OPA2C0, OPA2C1, OPA2C2
Switch Description
A2PSEL1
S12D~
A2PS A2NS A2OFM A2RS _A2PSEL0 A1O2A2P A1O2A2N PGAEN A2O2N S4D S5D S6/7D S8D S9D S11D _S14D
Results
OPA2 connections
1
0
1
1
00
0
0
0
0
On On Off Off Off Off
Off Calibration mode, Input = A2P
1
1
1
0
00
0
0
0
0
On On Off Off Off Off
Off Calibration mode, Input = A2N
1
1
0
x
00
0
0
0
0
On On Off Off Off Off
Off Normal mode, Input = A2N, A2P
0
1
0
x
01
0
0
0
0
Off On Off Off Off Off S12D On Input = A2N, VH1
0
1
0
x
10
0
0
0
0
Off On Off Off Off Off S13D On Input = A2N, VM
0
1
0
x
11
0
0
0
0
Off On Off Off Off Off S14D On Input = A2N, VL1
0
1
0
x
00
1
0
0
0
Off On Off Off Off On
Off Input = A2N, A1E
1
0
0
x
00
0
1
0
0
On Off Off On Off Off
Off Input = A1E, A2P
1
1
0
x
00
0
0
1
0
On On On Off Off Off
Off Input = A2N, A2P
1
0
0
x
00
0
0
1
0
On Off On Off Off Off
Off Input = A2N, A2P
1
0
0
x
00
0
0
0
1
On Off Off Off On Off
Off Input = A2P, OPA2 as buffer
0
0
0
x
01
0
0
0
1
Off Off Off Off Off Off S12D On Input = VH1, OPA2 as buffer
0
0
0
x
10
0
0
0
1
Off Off Off Off Off Off S13D On Input = VM, OPA2 as buffer
0
0
0
x
11
0
0
0
1
Off Off Off Off Off Off S14D On Input = VL1, OPA2 as buffer
· HT45F43
OPAs Control Bits
Switch Description
S12D~
A2PS A2NS A2PSEL1, 0 A1O2A2P A1O2A2N PGAEN A2O2N S4D S5D S6/7D S8D S9D S11D _S14D
Results
OPA2 Connections
1
1
00
0
0
0
0
On
On
Off
Off
Off
Off
Off
Normal mode, Input = A2N, A2P
0
1
01
0
0
0
0
Off
On
Off
Off
Off
Off S12D On Input = A2N, VH1
0
1
10
0
0
0
0
Off
On
Off
Off
Off
Off S13D On Input = A2N, VM
0
1
1
0
0
0
0
Off
On
Off
Off
Off
Off S14D On Input = A2N, VL1
0
1
00
1
0
0
0
Off
On
Off
Off
Off
On
Off
Input = A2N, A1E
1
0
00
0
1
0
0
On
Off
Off
On
Off
Off
Off
Input = A1E, A2P
1
1
00
0
0
1
0
On
On
On
Off
Off
Off
Off
Input = A2N, A2P
1
0
00
0
0
1
0
On
Off
On
Off
Off
Off
Off
Input = A2N, A2P
1
0
00
0
0
0
1
On
Off
Off
Off
On
Off
Off
Input = A2P, OPA2 as buffer
0
0
01
0
0
0
1
Off
Off
Off
Off
Off
Off S12D On Input = VH1, OPA2 as buffer
0
0
10
0
0
0
1
Off
Off
Off
Off
Off
Off S13D On Input = VM, OPA2 as buffer
0
0
11
0
0
0
1
Off
Off
Off
Off
Off
Off S14D On Input = VL1, OPA2 as buffer
Rev. 1.20
106
September 15, 2011