Datasheet

Description M41ST87Y, M41ST87W
10/54 Doc ID 9497 Rev 10
Figure 4. Block diagram
1. Open drain output.
2. Programmable output (open drain or full-CMOS); if open drain option is selected and if pulled-up to supply other than V
CC
,
this supply must be equal to, or less than V
BAT
when V
CC
= 0 V (during battery backup mode).
3. Available in SOX28 package only.
4. Crystal is external on SSOP package and internal for the SOX28 package.
AI07026
COMPARE
V
PFD
V
CC
V
OUT
COMPARE
V
SO
V
OUT
V
BL
BL
COMPARE
Crystal
(4)
I
2
C
INTERFACE
REAL TIME CLOCK
CALENDAR
128 BYTES
USER RAM
8 BYTES ROM
RTC w/ALARM
& CALIBRATION
WATCHDOG
SQUARE WAVE
TAMPER
SDA
SCL
1.25V
PFI
1
PFI
2
PFO
1
(2)
PFO
2
(2)
RSTIN1
POR
SQW/FT
(2)
RST
(1)
WDI
(3)
TPX
IN
WDS
TIE
X
CLR
X
CLRX
EXT
AFE
OFIE
IRQ/OUT
(1)
V
BAT
32KHz
OSCILLATOR
TP
CLR
F
32k
(1)
COMPARE
COMPARE
RSTIN2
(3)
EX
(3)
E
CON
(3)
(Internal)
1.25V
(Internal)
V
SS
2
XI
XO
(3)