M48T35Y-70MH6E STMicroelectronics, M48T35Y-70MH6E Datasheet - Page 17

• Manufacturer Part Number: M48T35Y-70MH6E
• Description: IC TIMEKPR NVRAM 256KBIT5V 28SOI
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T35Y-70MH6E

• 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: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC, 28-SOH (8.48mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2850-5; M48T35Y-70MH6

M48T35, M48T35Y
4
Caution:
Caution:
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 6.
1. For DIP package, soldering temperature of the IC leads is to not exceed 260 °C for 10 seconds. In order to
2. For DIP packaged devices, ultrasound vibrations should not be used for post-solder cleaning to avoid
3. For SOH28 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
T
SLD
Symbol
protect the lithium battery, preheat temperatures must be limited such that the battery temperature does
not exceed +85 °C. Furthermore, the devices shall not be exposed to IR reflow.
damaging the crystal.
255 °C must not exceed 30 seconds).
T
V
V
P
T
STG
I
(1)(2)(3)
CC
O
IO
A
D
Absolute maximum ratings
Ambient operating temperature
Storage temperature (V
Lead solder temperature for 10 seconds
Input or output voltages
Supply voltage
Output current
Power dissipation
Doc ID 2611 Rev 9
Parameter
CC
off, oscillator off)
M48T35Y
M48T35Y
M48T35
M48T35
Grade 1
Grade 6
®
sockets.
–40 to 85
–40 to 85
–0.3 to 7
–0.3 to 7
–0.3 to 7
–0.3 to 7
0 to 70
Value
260
20
1
Maximum ratings
Unit
mA
°C
°C
°C
°C
W
V
V
V
V
17/28