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參數(shù)資料
| 型號： | M41T11MHTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.330 INCH, SNAPHAT, PLASTIC, SOH-28 |
| 文件頁數(shù)： | 12/19頁 |
| 文件大?。?/td> | 137K |
| 代理商： | M41T11MHTR |
M41T11
2/19
Figure 2A. SO8 Connections
1
SDA
VSS
SCL
FT/OUT
OSCO
OSCI
VCC
VBAT
AI01001
M41T11
2
3
4
8
7
6
5
DESCRIPTION
The M41T11 TIMEKEEPER RAM is a low power
512 bit static CMOS RAM organized as 64 words
by 8 bits. A built-in 32.768 kHz oscillator (external
crystal controlled) and the first 8 bytes of the RAM
are used for the clock/calendar function and are
configured in binary coded decimal (BCD) format.
Addresses and data are transferred serially via a
two-line bi-directional bus. The built-in address
register is incremented automatically after each
write or read data byte.
The M41T11 clock has a built-in power sense cir-
cuit which detects power failures and automatical-
ly switches to the battery supply during power
failures. The energy needed to sustain the RAM
and clock operations can be supplied from a small
lithium coin cell.
Typical data retention time is in excess of 5 years
with a 50mA/h 3V lithium cell. The M41T11 is sup-
plied in 8 lead Plastic Small Outline package or 28
lead SNAPHAT package.
The 28 pin 330mil SOIC provides sockets with
gold plated contacts at both ends for direct con-
nection to a separate SNAPHAT housing contain-
ing the battery and crystal. The unique design
allows the SNAPHAT battery package to be
mounted on top of the SOIC package after the
completion of the surface mount process. Inser-
tion of the SNAPHAT housing after reflow pre-
vents potential battery and crystal damage due to
the high temperatures required for device surface-
mounting. The SNAPHAT housing is keyed to pre-
vent reverse insertion. The SOIC and battery/crys-
tal packages are shipped separately in plastic anti-
static tubes or in Tape & Reel form.
For the 28 lead SOIC, the battery/crystal package
(i.e.
SNAPHAT)
part
number
is
"M4Txx-
BR12SHx".
Caution: Do not place the SNAPHAT battery/crys-
tal package "M4Txx-BR12SHx" in conductive
foam since this will drain the lithium button-cell
battery.
Figure 2B. SOH28 Connections
AI03606
8
2
3
4
5
6
7
9
10
11
12
13
14
22
21
20
19
18
17
16
15
28
27
26
25
24
23
1
NC
VSS
NC
VCC
M41T11
NC
SDA
NC
SCL
NC
FT/OUT
NC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41T11SH | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 bit 64b x8 Serial Access TIMEKEEPER SRAM |
| M41T256Y | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:256 Kbit 32K x8 SERIAL RTC |
| M41T256Y_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:256Kbit (32K x 8) serial RTC |
| M41T256YMH | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:256 Kbit 32K x8 SERIAL RTC |
| M41T256YMH7 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:256 Kbit 32K x8 SERIAL RTC |
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