M41ST87WSS6F STMicroelectronics, M41ST87WSS6F Datasheet - Page 4

IC SUPERVISOR RTC/NVRAM 20-SSOP

M41ST87WSS6F

Manufacturer Part Number
M41ST87WSS6F
Description
IC SUPERVISOR RTC/NVRAM 20-SSOP
Manufacturer
STMicroelectronics
Type
Clock/Calendar/Supervisorr
Datasheets

Specifications of M41ST87WSS6F

Memory Size
160B
Time Format
HH:MM:SS:hh (24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SSOP
Function
Clock, Timestamp, Timekeeper, Watchdog, Alarm, Calendar, Timer, Timer Interrupt
Rtc Memory Size
1280 bit
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial
Supply Current
500 nA
Clock Format
Ss
Clock Ic Type
RTC
Interface Type
I2C
Memory Configuration
128 X 8
Supply Voltage Range
2.7V To 3.6V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-10616-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M41ST87WSS6F
Manufacturer:
FSC
Quantity:
6 000
Part Number:
M41ST87WSS6F
Manufacturer:
ST
Quantity:
20 000
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
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Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
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Table 17.
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Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
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Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Tamper detection truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Tamper detection current (normally closed - TCM
Tamper detect timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Calculated cut-off frequency for typical capacitance and resistance values. . . . . . . . . . . . 27
TIMEKEEPER
Alarm repeat modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Square wave output frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Reset AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Century bits examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
t
Default values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DC and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Crystal electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SOX28 – 28-lead plastic small outline, 300 mils, embedded crystal mechanical data . . . . 47
SSOP20 – 20-lead, shrink, small outline package mechanical data. . . . . . . . . . . . . . . . . . 48
Carrier tape dimensions for SOX28 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Reel dimensions for 24 mm carrier tape - SOX28 package . . . . . . . . . . . . . . . . . . . . . . . . 50
Reel dimensions for 16 mm carrier tape - SSOP20 package . . . . . . . . . . . . . . . . . . . . . . . 50
Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
rec
definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
®
register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Doc ID 9497 Rev 9
X
= '0') . . . . . . . . . . . . . . . . . . . . . . . . . . 23
M41ST87Y, M41ST87W

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