5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Designed By:Nisar Ahmed
MMC128MB
1 <RevCode>
Interfacing PIC16F877 Microcontroller with SD/MMC Card
B
11Thursday, July 23, 2009
Title
Size Document Number Rev
Date: Sheet
of
+5V
+5V
Y1 20MHz
C2
33PF
C1 33PF
U1
LM317
3
1
2
VIN
ADJ
VOUT
R6
3.3K
1
2
34
5
6
R5
1.8K
1
2
34
5
6
R1
220R
R2
470R
U2
PIC16F877
1
2
3
4
5
6
7
8
9
10
11
12
13
14
31
32
33
34
35
36
37
38
39
40
15
16
17
18
23
24
25
26
19
20
21
22
27
28
29
30
MCLR/VPP
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/REF
RA4/T0CLK
RA5/AN4/SS
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
VDD
GND
OSC1/CLK
OSC2/CLKOUT
GND
VDD
RB0/INT
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
RC0/T1OSO/T1CLK
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
R4
1K
R3
4.7K
SW1
RST
91 8
JS1
SD/MMC Card Socket
1
2
3
4
5
6
7
8
9
10
1
CS
DATA IN
GND
3.3V
CLK
GND
DATA OUT
9
10
