M41T256YMT7 查看數據表（PDF） - STMicroelectronics
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M41T256YMT7 Datasheet PDF : 27 Pages
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Figure 4. 44-pin SOIC Connections (MT)
XO
XI
NF
RST
NF
NF
NF
NF
NF
NF
NF
TP
NC
NF
NF
NF
NF
SDA
VSS
VSS
NC
VSS
1
44
2
43
3
42
4
41
5
40
6
39
7
38
8
37
9
36
10
35
11 M41T256Y 34
12
33
13
32
14
31
15
30
16
29
17
28
18
27
19
26
20
25
21
24
22
23
VCC
NC
NC
NC
FT
NF
NF
NF
NF
NF
NF
NC
NC
NF
SCL
NC
NF
NF
NF
NF
NF
BAT+
AI04755b
Note: No Function (NF) must be tied to VSS.
Figure 6. Block Diagram
SDA
SCL
PULL-UP TO
CHIP VCC
I2C
INTERFACE
Crystal
TP
32KHz
OSCILLATOR
VCC
M41T256Y
Figure 5. 44-pin SOIC (MH - SNAPHAT)
NC
NC
NF
RST
NF
NF
NF
NF
NF
NF
NF
TP
NC
NF
NF
NF
NF
SDA
VSS
VSS
NC
VSS
1
44
2
43
3
42
4
41
5
40
6
39
7
38
8
37
9
36
10
35
11 M41T256Y 34
12
33
13
32
14
31
15
30
16
29
17
28
18
27
19
26
20
25
21
24
22
23
VCC
NC
NC
NC
FT
NF
NF
NF
NF
NF
NF
NC
NC
NF
SCL
NC
NF
NF
NF
NF
NF
NC
AI07022
REAL TIME CLOCK
CALENDAR
32,752 BYTES
USER RAM
RTC
& CALIBRATION
TAMPER BIT
FT(1)
POWER
VBAT
Note: 1. Open drain output
VBL= 2.5V COMPARE
VSO = VBAT COMPARE
VPFD = 4.38V
COMPARE
BL
POR
RST(1)
AI04759
5/27
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