M48T08Y-10MH1F STMicroelectronics, M48T08Y-10MH1F Datasheet - Page 5

• Manufacturer Part Number: M48T08Y-10MH1F
• Description: IC TIMEKPR SRAM 64KBIT 5V 28SOIC
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T08Y-10MH1F

• Memory Size: 64K (8K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC, 28-SOH (8.48mm Width)
• Bus Type: Parallel
• User Ram: 8KB
• Operating Supply Voltage (typ): 5V
• Package Type: SOH
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 28
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4710-2

M48T08, M48T08Y, M48T18
1
Description
The M48T08/18/08Y TIMEKEEPER
time clock which is pin and function compatible with the DS1643. The monolithic chip is
available in two special packages to provide a highly integrated battery-backed memory and
real-time clock solution.
The M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard
8 K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing
the non-volatility of PROMs without any requirement for special WRITE timing or limitations
on the number of WRITEs that can be performed.
The 28-pin, 600 mil DIP CAPHAT™ houses the M48T08/18/08Y silicon with a quartz crystal
and a long-life lithium button cell in a single package.
The 28-pin, 330 mil SOIC provides sockets with gold-plated contacts at both ends for direct
connection to a separate SNAPHAT
design allows the SNAPHAT
after the completion of the surface mount process. Insertion of the SNAPHAT
reflow prevents potential battery and crystal damage due to the high temperatures required
for device surface-mounting. The SNAPHAT
The SOIC and battery/crystal packages are shipped separately in plastic anti-static tubes or
in tape & reel form. For the 28-lead SOIC, the battery/crystal package (e.g., SNAPHAT
part number is “M4T28-BR12SH” or “M4T32-BR12SH”.
Figure 1.
Logic diagram
A0-A12
®
E1
E2
Doc ID 2411 Rev 10
battery package to be mounted on top of the SOIC package
W
G
13
®
®
housing containing the battery and crystal. The unique
RAM is an 8 K x 8 non-volatile static RAM and real-
V CC
V SS
M48T08Y
M48T08
M48T18
®
housing is keyed to prevent reverse insertion.
8
DQ0-DQ7
INT
®
housing after
Description
AI01020
®
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