M48T37Y-70MH1E STMicroelectronics, M48T37Y-70MH1E Datasheet - Page 20

• 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

Maximum ratings
4
Caution:
Caution:
20/30
Maximum ratings
Stressing the device above the rating listed in the absolute maximum ratings table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Table 8.
1. For SOH44 package, lead-free (Pb-free) lead finish: reflow at peak temperature of 260 °C (the time above
Negative undershoots below –0.3 V are not allowed on any pin while in the battery backup
mode.
Do NOT wave solder SOIC to avoid damaging SNAPHAT
Symbol
255 °C must not exceed 30 seconds).
T
T
SLD
V
V
P
T
STG
I
CC
O
IO
A
D
(1)
Absolute maximum ratings
Ambient operating temperature
Storage temperature (V
oscillator off)
Lead solder temperature for 10 seconds
Input or output voltages
Supply voltage
Output current
Power dissipation
Doc ID 7019 Rev 9
Parameter
CC
off,
SNAPHAT
M48T37Y
M48T37V
M48T37Y
M48T37V
Grade 1
Grade 6
SOH44
®
sockets.
®
–55 to 150
–0.3 to 4.6
–0.3 to 4.6
–40 to 85
–40 to 85
–0.3 to 7
–0.3 to 7
0 to 70
Value
260
M48T37Y, M48T37V
10
1
Unit
mA
°C
°C
°C
°C
°C
W
V
V
V
V