SN8P2740 Series
ADC, OP-amp, Comparator 8-Bit Micro-Controller
R1 2.011K ohm
Vdd
Connect to JP23's P10O Pin
Vdd
Vin-
Vin+
R1
100K ohm
+
_
Vout
AIN1
RT1
50K ohm/
25 degree
Connect to JP23's P12O Pin
R2
Vss
1.011K ohm
Connect to JP23's P11O Pin
Vss
Vss
12. When SN8P2743‟s OP-AMP function enable as the above figure. P12O (JP23) is OP-AMP‟s output. P11 (JP23) is
OP-AMP‟s non-inverse. P10O (JP23) is OP-AMP‟s inverse.
13. If user wants to measure OP-AMP V+ / V- / Vo voltage as the above figure, the real OP-AMP‟s inverse voltage is
OP3N (JP7). The real OP-AMP‟s non-inverse voltage is OP3P (JP7). The real OP-AMP‟s output voltage is OP3O
(JP7).
14. Why OP-AMP connecting is different with measurement, because OP-AMP series connection with analog switch
internal resistor (Ron).
15. When CMP0 function enable. The CM0P/CM0N (JP17) will be external analog signal input pin. The P43O (JP23)
will be CMP0‟s output result.
16. When CMP1 function enable. The CM1P/CM1N (JP16) will be external analog signal input pin. The P42O (JP23)
will be CMP1‟s output result.
17. When CMP2 function enable. The CM2P/CM1N (JP8) will be external analog signal input pin. The P41O (JP23)
will be CMP2‟s output result.
18. When user uses CMP0~CMP2‟s CM0P/CM0N/CM1P/CM1N/CM2P/CM2N analog function, user must be
connecting to JP17/JP16/JP8. When user uses CMP0~CMP2‟s CM0P/CM0N/CM0O/CM1P/CM1N/CM1O/CM2P/
CM2N/CM2O logic function, user must be connecting to JP23‟s P02/P03/P43O/P16/P15/P42O/P14/P13/P41O.
19. When user uses TC0 special function (Pulse generator function and TC0 clock source is Fcpu.) in ICE emulation.
If user sets IDE breakpoint, the PWM plus generator output status will be unknown (Fcpu stop).
20. When user uses TC0 special function (Pulse generator function and TC0 clock source is Fhosc.) in ICE emulation.
If user sets IDE breakpoint, the PWM plus generator output will be finished (Fhosc still work). And the PWM pulse
generator output will be back to idle status.
21. When user uses CMP1 and CMP2‟s de-bounce time control (CM1D3~CM1D0, CM2D3~CM2D0 and clock source
is Fcpu) in ICE emulation. If user sets IDE breakpoint, the CM0O output will be effected (Fcpu stop)
22. When user uses CMP0‟s de-bounce time control (CM0D3~CM0D0 and clock source is Fhosc) in ICE emulation.
If user sets IDE breakpoint, the CM0O output will be not effected (Fhosc still work).
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