m41st87w STMicroelectronics, m41st87w Datasheet - Page 20

• Manufacturer Part Number: m41st87w
• Description: 5.0, 3.3, Or 3.0v, 1280 Bit 160 X8 Secure Serial Rtc And Nvram Supervisor With Tamper Detection
• Manufacturer: STMicroelectronics

M41ST87Y, M41ST87W
Figure 19. Tamper Output Timing (with CLR1
Note: 1. If connected to a negative charge pump device, this pin must be isolated from the charge pump by using both n-channel and p-
Table 5. Tamper Detect Timing
Note: 1. With input capacitance = 70pF and resistance = 50 .
20/42
Symbol
t
CLRD
t
CLR
2. If the device is in battery back-up; NOT on V
3. If TIE
4. If ABE = '1.'
2. If the OF Bit is set, t
channel MOSFETs as illustrated in
(1)
IRQ/OUT
V OUT
X
TP CLR
= '1.'
E CON
Tamper RAM Clear Ext Delay
RST
(1)
(3)
Tamper Clear Timing
Parameter
CLRD
(TB Bit set)
(min) = 0.5ms.
Tamper
Event
Figure 20., page
tCLRD
High-Z
High-Z
CC
tCLR
CLRPW1
(see
(2)
X
0
0
1
1
21.
RAM Clear External (CLR1
EXT
or CLR2
CLRPW0
X
0
1
0
1
EXT
trec
1.0
= '1')
Min
EXT
(2)
and CLR2
(4)
Typ
1.5
16
1
4
8
EXT
), page
18).
Max
2.0
AI07083
Unit
ms
s
s
s
s