Holtek HT45F23A Manual page 110

A1OEN: OPA1 output enable or disable control bit
Bit 1
0: disable
1: enable
Note: If OPA1 enable and A1OEN set to 1, the MCU will consumption more DC
A1EN: OPA1 enable or disable control bit
Bit 0
0: disable
1: enable
If this bit is set to 0, the A1O2N bits will be cleared to 0 by hardware.
OPA2C0 Register
Bit 7
Name A2X
R/W R
POR 0
A2X: Operational amplifier output; positive logic. This bit is read only.
Bit 7
Bit 6~0 Undefined
OPA2C1 Register
Bit 7
Name A2O2CIN
R/W R/W
POR 0
A2O2CIN: OPA2 output to comparator input control bit
Bit 7
0: disable
1: enable
The A2O2CIN bit should be set to 1 after the CNPSEL and A1O2CIN bits are set to 0
to ensure that the OPA2 output is successfully selected as the comparator input.
Bit 6 A2O2N: OPA2 output to OPA2 Inverting input control bit
0: disable
1: enable
This bit is only available when the A2EN bit is set to 1. If the A2EN bit is set to 0, the
A2O2N bit will be cleared to 0 by hardware.
Bit 5~4 A2PSEL1, A2PSEL0: OPA2 Non-inverting input selection bit
00: no connection
01: from VH1 (0.9×V
10: from VM (0.5×V
11: from VL1 (0.1×V
To select the VH1, VM or VL1 signal as the OPA2 non-inverting input by setting the
A2PSEL bit field, the A2PS and A1O2A2P bits should first be set to 0.
Bit 3 A2PS: A2P pin to OPA2 Non-inverting input control bit
0: no connection
1: from A2P pin
If this bit is set to 1, the A1O2A2P bit and A2PSEL field will be cleared to 0 by
hardware.
Bit 2 A2NS: A2N pin to OPA2 Inverting input control bit
0: no connection
1: from A2N pin
If this bit is set to 1, the A1O2A2N bit will be cleared to 0 by hardware.
Rev. 1.40
TinyPower Flash MCU with OPA & Comparators
TM
power (100μA ~ 200μA).
6 5 4
— — —
— — —
— — —
6 5 4
A2O2N A2PSEL1 A2PSEL0
R/W R/W R/W
0 0 0
)
LDO
or 0.5×V
DD LDO
or 0.1×V
DD LDO
110
HT45F23A/HT45F24A
3 2
— — —
— — —
— — —
3 2
A2PS A2NS A2OEN
R/W R/W R/W
1 1
)
)
1 0
—
—
—
1 0
A2EN
R/W
0 0
March 29, 2019