CY14E064L CYPRESS [Cypress Semiconductor], CY14E064L Datasheet - Page 6

• Manufacturer Part Number: CY14E064L
• Description: 64-Kbit (8K x 8) nvSRAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 001-06543 Rev. *C
Preventing STOREs
The STORE function can be disabled on the fly by holding HSB
high with a driver capable of sourcing 30 mA at a V
least 2.2V, as it will have to overpower the internal pull-down
device that drives HSB low for 20 µs at the onset of a STORE.
Table 1. Hardware Mode Selection
CE
H
X
L
L
L
L
WE
H
H
H
X
L
X
HSB
H
H
H
H
H
L
PRELIMINARY
OH
A12–A0
of at
0AAA
0AAA
1FFF
0F0F
1FFF
0F0E
0000
1555
10F0
0000
1555
10F0
X
X
X
X
When the CY14E064L is connected for AutoStore operation
(system V
V
CY14E064L will attempt to pull HSB low; if HSB doesn’t
actually get below V
and abort the STORE attempt.
CAP
Nonvolatile RECALL
Nonvolatile STORE
) and V
Nonvolatile STORE
Not Selected
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Write SRAM
CC
Mode
CC
connected to V
crosses V
IL
,the part will stop trying to pull HSB low
Output High-Z
Output High-Z
Output High Z
Output High Z
SWITCH
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Input Data
CC
I/O
and a 68-µF capacitor on
on the way down, the
CY14E064L
Page 6 of 16
Standby
Power
Active
Active
Active
Active
I
I
CC2
CC2
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