Datasheet

M41ST87Y, M41ST87W Description
Doc ID 9497 Rev 10 9/54
Table 1. Signal names
XI
(1)
1. Available in SSOP package only.
Oscillator input
XO
(1)
Oscillator output
E
CON
(2)
2. Available in SOX28 package only.
Conditioned chip enable output
EX
(2)
External chip enable
IRQ/OUT
(3)
3. Open drain output.
Interrupt/out output (open drain)
PFI
1
Power fail input 1
PFI
2
Power fail input 2
PFO
1
(4)
4. Programmable output (open drain or full-CMOS).
Power fail output 1
PFO
2
(4)
Power fail output 2
RST
(3)
Reset output (open drain)
RSTIN1 Reset 1 input
RSTIN2
(2)
Reset 2 input
SCL Serial clock input
SDA Serial data input/output
SQW/FT
(4)
Square wave output/frequency test
WDI
(2)
Watchdog input
V
CC
Supply voltage
V
OUT
Voltage output
V
SS
Ground
F
32k
(3)
32 kHz square wave output (open drain)
TP1
IN
Tamper pin 1 input
TP2
IN
Tamper pin 2 input
TP
CLR
(2)
Tamper pin RAM clear
V
BAT
Positive battery pin input
NF
(5)
5. Should be connected to V
SS
.
No function
NC
(5)
No connect