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M41ST87WMX6TR Datasheet(PDF) 21 Page - STMicroelectronics

Part # M41ST87WMX6TR
Description  5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
PDF  42 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41ST87WMX6TR Datasheet(HTML) 21 Page - STMicroelectronics

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M41ST87Y, M41ST87W
Figure 20. RAM Clear Hardware Hookup
Note: 1. Most inverting Charge Pumps drive OUT to Ground when device shut down is enabled (SHDN = logic low). Therefore, an n-channel
enhancement mode MOSFET should be used to isolate the OUT pin from the VOUT of the M41ST87.
2. In order to avoid turning on an on-chip parasitic diode when driving VOUT negative, a p-channel enhancement mode MOSFET
should be used to isolate the VOUT pin from the negative voltage generated by the inverting Charge Pump.
AI07804
VCC
PFO1
EX
SCL
M41ST87Y/W
WDI
RSTIN1
RSTIN2
PFI1
PFI2
VSS
VBAT
F32k
IRQ/OUT
SQW/FT
RST
VOUT
ECON
SDA
CAP+ CAP–
Inverting
Charge
Pump
SHDN
OUT
IN
TP1IN
TPCLR
TP2IN
Pushbutton
Reset
PFO2
Low-Power
SRAM
VCC
Negative Output
(–1 x VIN)
E
To RST
To LED Display
(2)
(1)
To NMI
To INT
To 32kHz
Inhibit
5V
Regulator
VCC
VIN



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