Datasheet

Operating modes M41ST87Y, M41ST87W
24/54 Doc ID 9497 Rev 10
Figure 18. Tamper current options
Figure 19. Tamper output timing (with CLR1
EXT
or CLR2
EXT
= '1') - available in SOX28 package
only
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-channel MOSFETs as illustrated in Figure 20 on page 25.
2. If the device is in battery back-up; NOT on V
CC
(see Section 2.6.9: RAM clear external (CLR1
EXT
and CLR2
EXT
) - available
in SOX28 package only on page 22). V
OUT
is forced to GND during a tamper event when on V
CC
.
3. If TIE
X
= '1.'
4. If ABE = '1' and device is in battery backup mode.
AI07820
TAMPER LO,
NORMALLY OPEN
TAMPER HI,
NORMALLY CLOSED
User
Configuration
User Configuration
User Configuration
TDS
X
= 0
TDS
X
= 1
TDS
X
= 0
TDS
X
= 1
TAMPER HI,
NORMALLY OPEN
TAMPER LO,
NORMALLY CLOSED
CONTINUOUS
MONITORING
CONTINUOUS
MONITORING
CONTINUOUS
MONITORING
SAMPLED
MONITORING
CONTINUOUS
MONITORING
SAMPLED
MONITORING
V
CC
(V
OUT
)
TP
X
(TP1, TP2)
V
CC
(V
OUT
)
V
CC
(V
OUT
)
TCM
X
, TPM
X
TCHI/TCLO = 0
TCHI/TCLO = 1
TCHI/TCLO = 0
TCHI/TCLO = 1
TP
CLR
V
OUT
(1)
RST
Tamper
Event
(TB Bit set)
High-Z
(2)
t
rec
t
CLR
t
CLRD
AI07083
E
CON
IRQ/OUT
(3)
High-Z
(4)