M41ST87WSS6F STMicroelectronics, M41ST87WSS6F Datasheet - Page 46
![IC SUPERVISOR RTC/NVRAM 20-SSOP](/photos/37/60/376091/ssop-20_sml.jpg)
M41ST87WSS6F
Manufacturer Part Number
M41ST87WSS6F
Description
IC SUPERVISOR RTC/NVRAM 20-SSOP
Manufacturer
STMicroelectronics
Type
Clock/Calendar/Supervisorr
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
Company:
Part Number:
M41ST87WSS6F
Manufacturer:
FSC
Quantity:
6 000
Part Number:
M41ST87WSS6F
Manufacturer:
ST
Quantity:
20 000
DC and AC parameters
Figure 28. Power down/up mode AC waveforms
1. E
Table 19.
1. Valid for ambient operating temperature: T
2. V
3. V
4. Programmable (see
46/54
Symbol
200 µs after V
t
CON
t
PFD
PFD
t
FB
t
t
t
PFD
F
PD
t
RB
rec
R
(2)
(3)
(max) to V
(min) to V
available in the SOX28 (MX) package only.
V CC
V PFD (max)
V PFD (min)
V SO
RST
INPUTS
OUTPUTS
E CON
Power down/up AC characteristics
V
V
EX at V
PFI to PFO propagation delay
V
V
Power-up deselect time
(1)
PFD
PFD
PFD
SS
CC
SS
PFD
passes V
to V
fall time of less than t
PFO
(max) to V
(min) to V
(min) to V
(min) fall time of less than t
Table 12 on page
t PD
IH
PFD
(PER CONTROL INPUT)
before power down
(min) V
PFD
VALID
RECOGNIZED
SS
PFD
VALID
PFD
(min).
t F
V
(max) V
(min) V
CC
CC
Parameter
fall time
rise time
40)
FB
CC
CC
may cause corruption of RAM data.
A
= –40 to 85 °C; V
fall time
rise time
F
t FB
(1)
may result in deselection/write protection not occurring until
Doc ID 9497 Rev 9
CC
= 4.5 to 5.5 V or 2.7 to 3.6 V (except where noted).
DON'T CARE
HIGH-Z
t RB
Min
300
10
10
96
0
1
Typ
15
t R
M41ST87Y, M41ST87W
(PER CONTROL INPUT)
t rec
RECOGNIZED
98
Max
25
VALID
VALID
(4)
AI07085
Unit
ms
µs
µs
µs
µs
µs
µs