1024k Nonvolatile SRAM
19-5589; Rev 10/10
www.maxim-ic.com
FEATURES
10 years minimum data retention in the
absence of external power Data ...
Description
19-5589; Rev 10/10
www.maxim-ic.com
FEATURES
10 years minimum data retention in the
absence of external power Data is automatically protected during power
loss Power supply monitor resets processor when
VCC power loss occurs and holds processor in reset during VCC ramp-up Battery monitor checks remaining capacity
daily Read and write access times of 70ns Unlimited write cycle endurance Typical standby current 50µA Upgrade for 128k x 8 SRAM, EEPROM or
Flash Lithium battery is electrically disconnected to
retain freshness until power is applied for the
first time Full ±10% VCC operating range (DS1345Y)
or optional ±5% VCC operating range (DS1345AB) Optional industrial temperature range of
-40°C to +85°C, designated IND PowerCap Module (PCM) package
- Directly surface-mountable module
- Replaceable snap-on PowerCap provides
lithium backup battery
- Standardized pinout for all nonvolatile
(NV) SRAM products
- Detachment feature on PowerCap allows
easy removal using a regular screwdriver
DS1345Y/AB 1024k Nonvolatile SRAM
with Battery Monitor
PIN ASSIGNMENT
BW 1
A15 2
A16 3
RST
4
VCC 5
WE 6
OE CE DQ7
7 8 9
DQ6
10
DQ5
11
DQ4
12
DQ3 DQ2
13 14
GND VBAT
DQ1
15
DQ0
16
GND
17
34 NC
33 NC
32 A14 31 A13 30 A12 29 A11 28 A10 27 A9 26 A8
25 A7 24 A6 23 A5 22 A4 21 A3 20 A2 19 A1 18 A0
34-Pin PowerCap Module (PCM) (Uses DS9034PC+ or DS9034PCI+ PowerCap)
PIN DESCRIPTION
A0 – A16
- Address Inputs
DQ0 – DQ7
- Data In/Data Out
CE - Chip E...
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