M41ST87WSS6F STMicroelectronics, M41ST87WSS6F Datasheet - Page 8

• Manufacturer Part Number: M41ST87WSS6F
• Description: IC SUPERVISOR RTC/NVRAM 20-SSOP
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST87WSS6F

• Memory Size: 160B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Function: Clock, Timestamp, Timekeeper, Watchdog, Alarm, Calendar, Timer, Timer Interrupt
• Rtc Memory Size: 1280 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Supply Current: 500 nA
• Clock Format: Ss
• Clock Ic Type: RTC
• Interface Type: I2C
• Memory Configuration: 128 X 8
• Supply Voltage Range: 2.7V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10616-2

Description
Note:
Note:
8/54
Figure 2.
No function (NF) and no connect (NC) pins should be tied to V
internally shorted together.
Figure 3.
No connect (NC) pin should be tied to V
28-pin, 300 mil SOIC (MX) connections
20-pin, SSOP (SS) connections
SQW/FT
SQW/FT
RSTIN1
RSTIN2
RSTIN1
PFO 2
PFO 1
PFO 2
PFO 1
PFI 2
PFI 2
V SS
V SS
WDI
V CC
NC
NC
NC
NF
NF
NF
NF
X1
X2
Doc ID 9497 Rev 9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
M41ST87W
M41ST87W
M41ST87Y
M41ST87Y
SS
.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
20
19
18
17
16
15
14
13
12
11
V CC
EX
IRQ/OUT
V OUT
TP2 IN
PFI 1
SCL
RST
TP CLR
SDA
E CON
TP2 IN
F 32k
TP1 IN
V BAT
IRQ/OUT
V OUT
PFI 1
SCL
F 32k
TP1 IN
RST
SDA
V BAT
AI07025b
AI07025c
SS
. Pins 1, 2, 3, and 4 are
M41ST87Y, M41ST87W