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