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M41ST87WMX6 on a board, in 3D

M41ST87WMX6

STMicroelectronics

-40℃~+85℃ 2.7V~3.6V 500nA Built-in I2C Watchdog timer、Battery low-voltage detection、InsideSRAM/NVRAM、Timestamp function、Programmable clock output、Alarm function、Power-off retention of registers、Locking and tamper-proof Yes SOIC-28-300mil Real Time Clocks ROHS

Extended
DatasheetJLCPCBLCSCst/M41ST87WMX6
Category
Real Time Clocks
Package
SOIC-28-300mil
Pins
5

Overview

The M41ST87WMX6 is a real Time Clock made by STMicroelectronics in a SOIC-28-300mil package with 28 pins. -40℃~+85℃ 2.7V~3.6V 500nA Built-in I2C Watchdog timer、Battery low-voltage detection、InsideSRAM/NVRAM、Timestamp function、Programmable clock output、Alarm function、Power-off retention of registers、Locking and tamper-proof Yes SOIC-28-300mil Real Time Clocks ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:M41ST87WMX6TR, from EasyEDA) and its footprint (Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C2688669).

Symbol

NF1NF2NF3NF4NC5NC6PFO2#7SQW/FT8WDI9RSTIN1#10RSTIN2#11PFO#12PFI213VSS14VBAT15ECON#16SDA17TPCLR18RST#19TP1IN20F32k21SCL22PFI123TP2IN24VOUT25IRQ#/OUT26EX#27VCC28
EasyEDA_Cloud:M41ST87WMX6TRFrom EasyEDA

Footprint

12345678910111213141516171819202122232425262728
Package_SO:SOIC-28W_7.5x17.9mm_P1.27mmFrom KiCad's library

Parameters

7
Alarm Output
Yes
Features
Watchdog timer；Timestamp function；InsideSRAM/NVRAM；Locking and tamper-proof；Power-off retention of registers；Battery low voltage detection；Alarm function；Programmable clock output
Interface
I2C
Operating Temperature
-40℃~+85℃
Quiescent Current(Iq)
500nA
Voltage - Supply
2.7V~3.6V
crystal oscillator
Built-in

Order codes

1

Pinout

28
The pins of the M41ST87WMX6
PinNameType
1NFUnspecified
2NFUnspecified
3NFUnspecified
4NFUnspecified
5NCUnspecified
6NCUnspecified
7PFO2#Unspecified
8SQW/FTUnspecified
9WDIUnspecified
10RSTIN1#Unspecified
11RSTIN2#Unspecified
12PFO#Unspecified
13PFI2Unspecified
14VSSUnspecified
15VBATUnspecified
16ECON#Unspecified
17SDAUnspecified
18TPCLRUnspecified
19RST#Unspecified
20TP1INUnspecified
21F32kUnspecified
22SCLUnspecified
23PFI1Unspecified
24TP2INUnspecified
25VOUTUnspecified
26IRQ#/OUTUnspecified
27EX#Unspecified
28VCCUnspecified

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Questions

Is there a KiCad symbol and footprint for the M41ST87WMX6?

Yes. The symbol is EasyEDA_Cloud:M41ST87WMX6TR and the footprint Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the M41ST87WMX6?

SOIC-28-300mil, with 28 pins. Its footprint is drawn on this page.

Where is the M41ST87WMX6 datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the M41ST87WMX6?

JLCPCB lists it as part C2688669, with 0 in stock; the sellers' links on this page open their listings.

What can replace the M41ST87WMX6?

Parts like it in the library: the BQ4802LYDW by Texas Instruments, the M41ST85WMX6 by STMicroelectronics, the DS1501WZ+ by Analog Devices and the V3025SO28A+ by EM Microelectronic. Check their datasheets: a part that fits the footprint may still differ in its ratings.

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