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参数资料
| 型号： | M41T81M6E |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SOIC-8 |
| 文件页数： | 15/29页 |
| 文件大小： | 454K |
| 代理商： | M41T81M6E |
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DC and AC parameters
M41T81
Doc ID 7529 Rev 10
Figure 15.
Power down/up mode AC waveforms
Table 9.
DC characteristics
Sym
Parameter
Test condition(1)
1.
Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5 V (except where noted).
Min
Typ
Max
Unit
ILI
Input leakage current
0V
≤ VIN ≤ VCC
±1
A
ILO
Output leakage current
0V
≤ VOUT ≤ VCC
±1
A
ICC1
Supply current
Switch freq = 400 kHz
400
A
ICC2
Supply current (standby)
SCL,SDA = VCC – 0.3V
100
A
VIL
Input low voltage
–0.3
0.3VCC
V
VIH
Input high voltage
0.7VCC
VCC + 0.3
V
VOL
Output low voltage
IOL = 3.0 mA
0.4
V
Output low voltage (open
drain)(2)
2.
For IRQ/FT/OUT/SQW pin (open drain)
IOL = 10 mA
0.4
V
Pull-up supply voltage
(open drain)
IRQ/OUT/FT/SQW
5.5
V
VBAT
(3)
3.
STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.
Battery supply voltage
2.5(4)
4.
After switchover (VSO), VBAT (min) can be 2.0 V for crystal with RS = 40 kΩ.
33.5(5)
5.
For rechargeable backup, VBAT (max) may be considered VCC.
V
IBAT
Battery supply current
TA = 25 °C, VCC = 0 V
oscillator on, VBAT = 3 V
0.6
1
A
Table 10.
Crystal electrical characteristics
Sym
Parameter(1)(2)
1.
Externally supplied. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning Fork
Type (thru-hole) or the DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature
operations. KDS can be contacted at kouhou@kdsj.co.jp or http://www.kdsj.co.jp for further information on
this crystal type.
2.
Load capacitors are integrated within the M41T81. Circuit board layout considerations for the 32.768 kHz
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
Min
Typ
Max
Units
fO
Resonant frequency
-
32.768
kHz
RS
Series resistance
-
60
k
Ω
CL
Load capacitance
-
12.5
pF
AI00596
VCC
trec
tPD
VSO
SDA
SCL
DON'T CARE
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| M41T81M6F | 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 |
| M41T81M6F-CUT TAPE | 制造商:ST 功能描述:M41T Series 2 V Serial I2C Real Time Clock with Alarm - SOIC-8 |
| M41T81M6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Serial Access Real-Time Clock with Alarms |
| M41T81MX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:SERIAL ACCESS RTC WITH ALARMS |
| M41T81MX6 | 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 |
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