M48T37Y-70MH1E STMicroelectronics, M48T37Y-70MH1E Datasheet - Page 27

• Manufacturer Part Number: M48T37Y-70MH1E
• Description: IC TIMEKPR NVRAM 256KBIT5V 44SOH
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T37Y-70MH1E

• Memory Size: 256K (32K 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: 44-SOH
• Bus Type: Parallel
• User Ram: 32KB
• 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: 44
• Mounting: Surface Mount
• Memory Configuration: 32K X 8
• Nvram Features: RTC
• Interface Type: Parallel
• Access Time: 70ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 44
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2854-5; M48T37Y-70MH1

PART NUMBERING
Table 17. Ordering Information Scheme
Example:
Device Type
M48T
Supply Voltage and Write Protect Voltage
37Y = V
37V = V
Speed
–70 = 70ns (37Y)
–10 = 100ns (37V)
Package
MH
Temperature Range
1 = 0 to 70°C
6 = –40 to 85°C
Shipping Method
blank = Tubes (Not for New Design - Use E)
E = Lead-free Package (ECO
F = Lead-free Package (ECO
TR = Tape & Reel (Not for New Design - Use F)
Note: 1. The SOIC package (SOH44) requires the SNAPHAT
For other options, or for more information on any aspect of this device, please contact the ST Sales Office
nearest you.
Table 18. SNAPHAT Battery Table
(1)
Caution: Do not place the SNAPHAT battery package “M4TXX-BR12SH” in conductive foam as it will drain the lithium button-cell bat-
tery.
= SOH44
M4T28-BR12SH
M4T32-BR12SH
CC
CC
BR12SH” in plastic tube or “M4TXX-BR12SHTR” in Tape & Reel form (see Table 18).
Part Number
= 4.5 to 5.5V; V
= 3.0 to 3.6V; V
PFD
PFD
= 4.2 to 4.5V
= 2.7 to 3.0V
PACK
PACK
Lithium Battery (48mAh) SNAPHAT
Lithium Battery (120mAh) SNAPHAT
®
®
), Tubes
), Tape & Reel
®
Description
battery package which is ordered separately under the part number “M4TXX-
M48T
37Y
–70
MH
M48T37Y, M48T37V
Package
1
SH
SH
E
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