M48T37V-10MH6F STMicroelectronics, M48T37V-10MH6F Datasheet - Page 5

• Manufacturer Part Number: M48T37V-10MH6F
• Description: IC TIMEKPR NVRAM 256KB 3V 44-SOH
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T37V-10MH6F

• Memory Size: 256K (32K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-SOH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4719-2

M48T37Y, M48T37V
1
Caution:
Description
The M48T37Y/V TIMEKEEPER
clock. The monolithic chip is available in a special package which provides a highly
integrated battery-backed memory and real-time clock solution.
The 44-lead, 330 mil SOIC package provides sockets with gold-plated contacts at both ends
for direct connection to a separate SNAPHAT housing containing the battery and crystal.
The unique design allows the SNAPHAT
the SOIC package after the completion of the surface mount process.
Insertion of the SNAPHAT housing after reflow prevents potential battery and crystal
damage due to the high temperatures required for device surface-mounting. The SNAPHAT
housing is keyed to prevent reverse insertion.
The SOIC and battery packages are shipped separately in plastic anti-static tubes or in tape
& reel form. For the 44-lead SOIC, the battery/crystal package (e.g., SNAPHAT) part
number is “M4T28-BR12SH” or “M4T32-BR12SH”.
Do not place the SNAPHAT battery/crystal top in conductive foam, as this will drain the
lithium button-cell battery.
Figure 1.
Logic diagram
A0-A14
WDI
Doc ID 7019 Rev 9
W
G
E
®
RAM is a 32 Kb x 8 non-volatile static RAM and real-time
15
®
V CC
V SS
M48T37Y
M48T37V
battery/crystal package to be mounted on top of
8
DQ0-DQ7
RST
IRQ/FT
Description
AI02172
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