Contents
Logic Block Diagram1, 2
Features
CY14B104L, CY14B104N
Functional Description
Figure 2. Pin Diagram - 44 Pin TSOP
Figure 1. Pin Diagram - 48 FBGA
Pinouts
44 - TSOP
Output Enable, Active LOW. The active LOW
Figure 3. Pin Diagram - 54 Pin TSOP II
Byte High Enable, Active LOW. Controls DQ15 - DQ8
Byte Low Enable, Active LOW. Controls DQ7 - DQ0
Device Operation
Figure 4. AutoStore Mode
SRAM Read
SRAM Write
Table 1. Mode Selection
Hardware RECALL Power Up
Power
Software STORE
Preventing AutoStore
Table 1. Mode Selection continued
Data Protection
Noise Considerations
Maximum Ratings
DC Electrical Characteristics
Operating Range
Range
Capacitance
Data Retention and Endurance
Thermal Resistance
AC Test Conditions
Switching Waveforms
AC Switching Characteristics
Parameters
20 ns
Figure 7. SRAM Read Cycle #2 CE and OE Controlled 3, 14
CY14B104L, CY14B104N
Figure 8. SRAM Write Cycle #1 WE Controlled3, 17, 18
+ Feedback
Figure 10. SRAM Write Cycle #3 BHE and BLE Controlled3, 17, 18
Figure 9. SRAM Write Cycle #2 CE Controlled 3, 17, 18
CY14B104L, CY14B104N
+ Feedback
Figure 11. AutoStore or Power Up RECALL23
AutoStore/Power Up RECALL
CY14B104L/CY14B104N
Switching Waveforms
Software Controlled STORE/RECALL Cycle
Figure 13. Autostore Enable / Disable Cycle
Figure 12. CE and OE Controlled Software STORE/RECALL Cycle26
Switching Waveforms
Hardware STORE Pulse Width
Hardware STORE Cycle
Hardware STORE LOW to STORE Busy
Figure 14. Hardware STORE Cycle21
For x16 Configuration
For x8 Configuration
Truth Table For SRAM Operations
Inputs/Outputs2
Ordering Information
Diagram
Speed
Ordering Code
Diagram
Ordering Information continued
CY14B104L, CY14B104N
Speed
CY14B104L, CY14B104N
Part Numbering Nomenclature
CY 14 B 104 L - ZS P 20 X C T
Figure 16. 44-Pin TSOP II
Package Diagrams
CY14B104L, CY14B104N
+ Feedback
Figure 17. 48-Ball FBGA - 6 mm x 10 mm x 1.2 mm
Package Diagrams continued
CY14B104L, CY14B104N
+ Feedback
Package Diagrams continued
Figure 18. 54-Pin TSOP II
CY14B104L, CY14B104N
Page 21 of
Document Title CY14B104L/CY14B104N 4 Mbit 512K x 8/256K x 16 nvSRAM
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ECN No
Document Title CY14B104L/CY14B104N 4 Mbit 512K x 8/256K x 16 nvSRAM
CY14B104L, CY14B104N
Document Number
ECN No
Document Title CY14B104L/CY14B104N 4 Mbit 512K x 8/256K x 16 nvSRAM
CY14B104L, CY14B104N
Document Number
ECN No
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