CY14E064L-SZ25XC CYPRESS [Cypress Semiconductor], CY14E064L-SZ25XC Datasheet - Page 6

• Manufacturer Part Number: CY14E064L-SZ25XC
• Description: 64 Kbit (8K x 8) nvSRAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document Number: 001-06543 Rev. *D
Preventing STOREs
The STORE function is disabled by holding HSB high with a
driver capable of sourcing 30 mA at a V
because it has to overpower the internal pull down device. This
device 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
OH
HSB
H
H
H
H
H
L
of at least 2.2V,
A12–A0
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
and V
attempts to pull HSB LOW. If HSB does not actually get below
V
STORE attempt.
IL
, the part stops trying to pull HSB LOW and abort the
Non-volatile RECALL
Non-volatile STORE
Non-volatile STORE
CC
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
crosses V
CC
Mode
connected to V
SWITCH
on the way down, the CY14E064L
CC
Output High Z
Output High Z
Output High Z
Output High Z
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Input Data
and a 68 μF capacitor on V
IO
CY14E064L
Standby
Power
Active
Active
Active
Active
Page 6 of 17
I
I
CC2
CC2
CAP
)
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