ST SCM001V1 User Manual
based on the M41T62 and ST72651AR6
Features
■ Small mechanical size: 65 mm X 22 mm, with a
USB connector
■ User-friendly GUI (graphical user interface),
allowing the user to:
– directly monitor/control RTC parameters
– switch between various application modes
(RTC/mass storage)
– selec t th e voltage supply of the RTC
(ST72651AR6 regulator/capacitor)
– access a help window to explain all GUI
operations
Description
The STEVAL-SCM001V1 RTC dongle
demonstrates all the features of
STMicroelectronics’ M41T62 serial access RTC
(real-time clock), as well as the mass storage
capability using the ST7 USB. The demonstration
board also demonstrates the RTC ope ration using
a capacitor or the ST7 MCU regulator as a supp ly.
STEVAL-SCM001V1
RTC dongle demonstration board
Data Brief
STEVAL-SCM001V1
July 2008 Rev 1 1/4
For further information contact your local STMicroelectronics sales office .
www.st.com
4
Circuit schematic STEVAL-SCM001V1
V
P
P
1 Circuit schematic
Figure 1. Schematic diagram
C13B
?
680uF
C13
CC
V
P3
T
14
k7
4
5
D6
D7
D4
D
6
7
8
4
U2
1
K
7
.
4
R3
nF
C5
0
0
1
F
µ
4.7
C11
f
d
d
V
40
41
42
43
44
45
4
4
6
C
C
NC
N
N
NC
O
I/O 4
I/O 5
I/
I/O 7
C
SE
#CE
#RE
#R/B
#
NC
N
NC
NC
NC
9
8
7
6
5
4
3
2
1
CE
_
3
SMC _RB
NA ND
PA
7k
.
4
R6
D3
D1
D0
D2
6
3
37
38
39
C
NC
N
NC
VC C
VC C
NC
NC
13
12
11
10
Vddf
8
25
26
27
2
29
30
31
32
33
34
35
0
C
C
NC
N
N
NC
NC
NC
NC
VSS
I/O
I/O 1
I/O 2
I/O 3
C
AL E
CL E
NC
N
VSS
4
18
17
16
15
1
PA1
PA0
PA2
1
SH
P
E
C
C
C
W
AN D_FL A
N
N
NC
NC
N
#
#W
N
4
2
23
22
21
20
19
PA7
O n B oar d F l a sh
R
VC C
VC C
8
C
L
A
N
O
I
T
P
O
SDA -1
SCL- 1
2
0
1
11
1
9
L
UT
NC
SC
SDA
O
/
NC
13
14
15
16
4
U
2
XT
6pF
NC
8
Q
VC C
NC
R
I
NC
NC
I
X
1
KH z
8
.76
2
3
C9
7
NC
6
VS S
M4 1T62
S
S
V
XO
4
3
2
D
N
G
TP2
6pF
GND
5
W
SQ
R T C
USB_ 5V
E
0
7
R5
4
470E
R7
LED
D2
LD 1
L
ED1
LED 2
L
AL
ON
I
PT
O
_5V
B
US
2
1
P1
J
1
R
CC
V
V
_5
B
US
F
B
n
0
P
-
4
0
C
1
W
1
S
S
2
4k7
R
49
1
P
T
C31
0k
1
C2
C1
V
0
-1
F
0
C1
10µ
VPP
50
RESET
51
SCL
52
SDA
53
54
55
56
ICC CL K
57
ICC DA TA
F
58
n
0
59
0
VD D
60
GND
61
62
F
p
3
3
XT 1
F
3p
3
63
64
12M Hz
1
U
4
3
2
1
D
D+
CC
_D-
_
V
B
ON
C
SB
B_
US
U
B
S
S
U
USB_ GN
1
J
U
ND _CE1
A
N
2
3
5
6
8
4
4
44
4
4
47
4
)
S
HS)
(H
(
2
E
PE0
P
VP P
RESE T
SCL
SDA
PF2
F
PF5/I CC CL K
265
PF6/I CC DA TA
7
Vd d2
ST
Vd da
Vssa
Vss2
OSC IN
OSC OUT
dd
CC
M
DP
f
BV
BV
B
BD
dd
S
S
Vssf
V
U
U
US
US
7
6
5
4
3
2
1
GND
df
Vd
2
1
C
1
nF
C6
100
6
3
5
D
D4
D1
E
E
ED
E
LED
L
L
L
LED 2
L
5
7
8
9
0
1
4
8
33
34
3
36
3
3
3
4
4
1
3
C
C6
D2
P
PC5
P
PC7
PD0
PD
P
PD
5
4
3
1
0
D2
D
D
D
/ D
/
/ D
/
/
/
5
4
1
0
B
B
B3
B2
B
P
P
P
P
P
PB
9
3
1
0
16
15
14
1
12
1
1
5
D0D1D2
D3
D4
D
F
n
C7
100
µF
7
4.
VC C
2
1
D
868
4
IN
E
E
0
0
0E
1
70
7
R8
4
LED
3
D
L
LED 3
Vd d1
PA 7
PA 4 / SM C_ R/B
PA 3/SM C_ RE/C F_R E
PA 2/SM C_ AL E/ CF_A 2
PA 1/SM C_ WE /CF_ A1
PA 0/SM C_ CL E/CF _A 0
PB7 / D7
PB6 / D6
470E
R16
R
4
R9
47
D
LED
LE
LED
4
D
LD 6
LD 5
L
D6
E
L
LED 4
LED 5
GND
32
VD D
31
30
29
28
5
27
26
25
24
23
22
21
20
19
18
17
0K
1
R1
PA7
SM C_RB
PA3
PA2
PA1
PA0
D7
D6
ST 7 265
1
A-1
L-1
DA -
D
C
SCL- 1
S
S
S
k
0
0k
1
1
100E
R18
R13
1
R12 100E
R1
SDASCL
2
D2
IN4 148
1
VD D
Vd df
k
0
1
D
VD
V
USB_ 5
R17
T
CLK
D
D
P
C
P
ESE
GN
V
VD
IC
R
ICCDA TA
6
5
4
3
2
1
2
J
ICC
I C P
5k
4
R
1.
2/4
AM00645v1
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