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参数资料
| 型号： | M41T56MH6 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封装： | 0.330 INCH, PLASTIC, SOIC-28 |
| 文件页数： | 19/24页 |
| 文件大小： | 451K |
| 代理商： | M41T56MH6 |
M41T56
4/24
SUMMARY DESCRIPTION
The M41T56 TIMEKEEPER is a low power, 512-
bit static CMOS RAM organized as 64 words by 8
bits. A built-in 32,768Hz oscillator (external crystal
controlled) and the first 8 bytes of the RAM are
used for the clock/calendar function and are con-
figured in binary coded decimal (BCD) format. Ad-
dresses and data are transferred serially via a two-
line, bi-directional bus. The built-in address regis-
ter is incremented automatically after each WRITE
or READ data byte.
The M41T56 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 10 years
with a 50mAh, 3V lithium cell. The M41T56 is sup-
plied in an 8-lead Plastic SOIC package or a 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
(e.g.,
SNAPHAT)
part
number
is
“M4Txx-
BR12SH” (see Table 16., page 22).
Caution: Do not place the SNAPHAT battery/crys-
tal package “M4Txx-BR12SH” in conductive foam
as this will drain the lithium button-cell battery.
Figure 3. Logic Diagram
Table 1. Signal Names
AI02304B
OSCI
VCC
M41T56
VSS
SCL
OSCO
SDA
FT/OUT
VBAT
OSCI
Oscillator Input
OCSO
Oscillator Output
FT/OUT
Frequency Test / Output Driver
(Open Drain)
SDA
Serial Data Address Input / Output
SCL
Serial Clock
VBAT
Battery Supply Voltage
VCC
Supply Voltage
VSS
Ground
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| M41T81M6 | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T94MQ6E | 1 TIMER(S), REAL TIME CLOCK, PDSO16 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M41T56MH6E | 功能描述:实时时钟 Serial 512 (64x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| M41T56MH6F | 功能描述:实时时钟 Serial 512 (64x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| M41T56MH6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:512 bit (64 bit x8) Serial Access TIMEKEEPER SRAM |
| M41T56SH | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:512 bit 64b x8 Serial Access TIMEKEEPER SRAM |
| M41T60 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Serial Access Real-Time Clock |
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