ABL electronic PIC Microcontrollers PIC16 - Manual (Page 278)

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HW Connection
MAX7219
DOUT SEGD
SEGDP
SEGE SEGC
ISET
SEGG SEGB SEGF
DIN DIG0 DIG4 GND DIG6 DIG2 DIG7 DIG3 GND DIG5
V+
DIG1 LOAD
SEGA
CLK
4MHz
+5V
8
.
8
.
8
.
8
.
8
.
8
.
8
.
8
.
PIC16F877A
RA0/AN0 RA2/AN2/V
ref-
RA3/AN3/V
ref+
RA4/T
OCKI
RA5/AN4 RE0/RD/AN5 RE1/WR/AN6 RE2/CS/AN7 Vdd Vss OSC1 OSC2 RCO/T1OSO RC1/T1OSI RC3 RD0/PSP0 RD1/PSP1 MCLR/Vpp/THV RC2/CCP1 RA1/AN1
RB7/PGD
RB6/PGC
RB5 RB4
RB3/PGM
RB2 RB1
RB0/INT
Vdd Vss
RD6/PSP6 RD7/PSP7 RD5/PSP5 RD4/PSP4
RC7/RX/DT RC6/TX/CK
RC5 RC4
RD3/PSP3 RD2/PSP2
+5V
8
g
a
b
c
d
f
g
dp
e
fK
a
b
cd
p
K
d
e
Reset
10K
10K