M41ST87WSS6F STMicroelectronics, M41ST87WSS6F Datasheet - Page 21

• 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

M41ST87Y, M41ST87W
Figure 15. Basic tamper detect options
1. Available in SOX28 (MX) package only.
Figure 16. Tamper detect output options
1. Available in SOX28 (MX) package only.
TCM
TCM
TCM
TCM
X
X
X
X
, TPM
, TPM
, TPM
, TPM
X
X
X
X
= 1,1
= 0,0
= 1,0
= 0,1
TP1
TP2
Configuration
V
V
TEB1
TEB2
CC
CC
User
(V
(V
OUT
OUT
)
)
NORMALLY CLOSED
NORMALLY CLOSED
CLR1
CLR2
NORMALLY OPEN
NORMALLY OPEN
CLR2
CLR1
TIE
TIE
TAMPER LO,
TAMPER LO,
TAMPER HI,
TAMPER HI,
EXT
EXT
1
2
Triggering Event
Doc ID 9497 Rev 9
(other reset sources)
V
CC
(V
OUT
)
Configuration
TCM
CLR - Clear 128 bytes
internal RAM on tamper
Time stamp tamper
event (to RTC)
User
X
, TPM
X
IRQ - Interrupt the
processor on tamper
TP
RAM on tamper
RESET OUT
CLR
Tamper Event Output
CLRX
CLRX
TIE
- Clear external
X
EXT
AI07821
IRQ - Interrupt the
processor on tamper
TP
RAM on tamper
CLR - Clear internal
RAM on tamper
Time stamp tamper
event
(1)
CLR
Operating modes
- Clear external
AI07818
(1)
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