Text preview for : SCHEMATIC1___RTC_READ_WRITE.pdf part of rtc 1307 with PIC16F628 with 3 buttons
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CN1 DB-9 FEMALE
RTC READER/WRITER
VCCC1 CN2 LCD U1 RA2 RA3 RA4 RA5 RA1 RA0 RA7 RA6 PIC16F628 D1 R6 470E LED VCC RA5 1 RB6 2 RB7 3 CN5 MCLR VDD PGC PGD PGM GND 6 5 4 PWR CN4 100n VCC RB0/ RB1 RB2 RB3 RB4 RB5 RB6 RB7 6 7 8 9 10 11 12 13 VCC
5 9 4 8 3 7 2 6 1
VCC
R2 22K C2 12pF
VDD
R1 1K
R3 10K RA4 SW1 SW
GND
1 2 RA4 3 RA5 4 RA1 18 RA0 17 16 4Mhz Y1 15 C3 12pF
14
CN3
R4 4K7 VCC D2 1N4007
R5 4K7
VCC
VCC
RA0
5
RTC
U2 IN + C4 1000uF
7805
VCC
R7 10K RA5 SW2 SW
R8 10K RA1 SW3 SW
GND
OUT +
C5 100uF
PIC ISP