prepaid energy meter recharging section
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8/16/2019 Prepaid Energy Meter Recharging Section
http://slidepdf.com/reader/full/prepaid-energy-meter-recharging-section 1/1
1
2
XTAL20MHz
C1
33pF
C2
33pF
R11k
5V
R2
330E
D1
LED-RED
SCL6
SDA
5
WC7
E1 2
E2
3
U4
M24C04
R510k
R610k
5V
EEPROM CARD SECTION
R7
330E
D8
LED-GREEN
R8
330E
D9
LED-YELLOW
RA0/AN02
RA1/AN13
RA2/AN2/VREF-/CVREF4
RA4/T0CKI/C1OUT6
RA5/AN4/SS/C2OUT7
OSC1/CLKIN9
OSC2/CLKOUT10
RC1/T1OSI/CCP2 12
RC2/CCP1 13
RC3/SCK/SCL 14
RB7/PGD 28
RB6/PGC 27
RB5 26
RB4 25
RB3/PGM 24
RB2 23
RB1 22
RB0/INT 21
RC7/RX/DT 18
RC6/TX/CK 17
RC5/SDO 16
RC4/SDI/SDA 15
RA3/AN3/VREF+5
RC0/T1OSO/T1CKI 11
MCLR/Vpp/THV1
U1
PIC16F873A
SW1
SW-SPST
R9
1k
SW2
SW-SPST
R10
1k
5V
SW3
SW-SPST
R12
1k
5V
5V
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