SN8P1829
8-Bit MCU build-in 12-bit ADC + PGIA + Charge-pump Reg 128 dots LCD driver
SONiX TECHNOLOGY CO., LTD
Page 126
Version 1.0
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APPLICATION CIRCUIT
Blood Pressure Meter Application Circuit
Y1
32.768K
Y2
4M
AGND
AVDDR
AVREFL
AIN0
AIN1
AVREFH
VSS
20P
20P
20P
20P
LX
IN
LX
O
U
T
XI
N
XO
U
T
AVDDCP
VD
D
10uF
C+
C-
VSS
VD
D
VBAT
10uF
RS
T
VDD3A
VLC
D
V1
V2
V3
SE
G
3
1
SE
G
3
2
SE
G
2
7
SEG22
SEG24
VDD1
SEG23
SEG8
SEG9
SEG7
SEG6
SEG1
SEG0
CO
M
3
CO
M
2
CO
M
1
CO
M
0
VDD3A
LCD PANEL
MUX
AIN2
ADC
AIN
AOUT
AvrefL
AvrefH
R?
ADC
BATTERY
+
-
+
-
+
-
PGIABIAS
+
-
PGIAIN-
PGIAOUT
OP1IN+
OP1IN-
OP2IN+
OP2IN-
OP2OUT
OP1OUT
Sensor
VDD3A
VDD3A
VDD3A
VDD3A
Gain1
Gain2