CY14B256L-SP45XI Cypress Semiconductor Corp, CY14B256L-SP45XI Datasheet - Page 7

• Manufacturer Part Number: CY14B256L-SP45XI
• Description: IC NVSRAM 256KBIT 45NS 48SSOP
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of CY14B256L-SP45XI

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-SSOP
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 45ns
• Operating Supply Voltage (typ): 3.3V
• Package Type: SSOP
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 2.7V
• Operating Temp Range: -40C to 85C
• Pin Count: 48
• Mounting: Surface Mount
• Supply Current: 55mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1. Hardware Mode Selection
Notes
Document Number: 001-06422 Rev. *I
1. The six consecutive address locations are in the order listed. WE is HIGH during all six cycles to enable a nonvolatile cycle.
2. While there are 15 address lines on the CY14B256L, only the lower 14 lines are used to control software modes.
3. I/O state depends on the state of OE. The I/O table shown is based on OE Low.
CE
H
L
L
L
L
L
L
WE
X
H
H
H
H
H
L
OE
X
L
X
L
L
L
L
A
0x3C1F
0x3C1F
0x3C1F
0x0FC0
0x3C1F
0x0E38
0x31C7
0x03E0
0x0E38
0x31C7
0x03E0
0x0E38
0x31C7
0x03E0
0x0E38
0x31C7
0x03E0
0x0C63
0x303F
0x03F8
0x303F
0x07F0
0x303F
0x303F
14
X
X
X
– A
0
AutoStore Disable
Nonvolatile Recall
AutoStore Enable
Nonvolatile Store
Not Selected
Read SRAM
Write SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Mode
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
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Input Data
I/O
CY14B256L
Active I
Active
Active
Active
Standby
Power
Active
Active
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