19-5615; Rev 11/10
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DS1270Y/AB 16M Nonvolatile SRAM
FEATURES
5 years minimum data retention in the
absence of external power Data is automatically protected during power
loss Unlimited write cycles Low-power
CMOS operation Read and write access times of 70 ns Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time Full ±10% VCC operating range (DS1270Y) Optional ±5% VCC operating range
(DS1270AB) Optional industrial temperature range of
-40°C to +85°C, designated IND
PIN ASSIGNMENT
NC A20 A18 A16 A14 A12
A7 A6 A5 A4 A3 A2
A1
A0 DQ0
DQ1
DQ2
GND
1 2 3 4 5 6 7 8 9 10 11 12
13
14
15
16
17
18
36 VCC ...