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U634H256 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
U634H256 PowerStore 32K x 8 nvSRAM Simtek
Simtek Corporation Simtek
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Description
The U634H256 has two separate modes of operation: SRAM mode and nonvolatile mode. In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled.
The U634H256 is a fast static RAM (25, 35, 45 ns), with a nonvolatile electrically erasable PROM (EEPROM) element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent nonvolatile data resides in EEPROM. Data transfers from the SRAM to the EEPROM (the STORE operation) take place automatically upon power down using charge stored in an external 100 μF capacitor.

Features
□ High-performance CMOS nonvolatile static RAM 32768 x 8 bits
□ 25, 35 and 45 ns Access Times
□ 10, 15 and 20 ns Output Enable
□ Access Times
□ ICC = 15 mA typ. at 200 ns Cycle Time
□ Automatic STORE to EEPROM on Power Down using external capacitor
□ Hardware or Software initiated STORE (STORE Cycle Time < 10 ms)
□ Automatic STORE Timing
□ 106 STORE cycles to EEPROM
□ 100 years data retention in EEPROM
□ Automatic RECALL on Power Up
□ Software RECALL Initiation (RECALL Cycle Time < 20 μs)
□ Unlimited RECALL cycles from EEPROM
□ Single 5 V ± 10 % Operation
□ Operating temperature ranges:
   0 to 70 °C
   -40 to 85 °C
   -40 to125 °C(only 35 ns)
□ QS 9000 Quality Standard
□ ESD protection > 2000 V (MIL STD 883C M3015.7-HBM)
□ RoHS compliance and Pb- free
□ Package: SOP32 (300 mil)

 

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与其他制造商的搜索 'U634H256'

零件编号产品描述 (功能)PDF生产厂家
STK15C88 256 Kbit (32K x 8) PowerStore nvSRAM 视图 Cypress Semiconductor
UL634H256 Low Voltage PowerStore 32K x 8 nvSRAM 视图 Unspecified
U634H256 PowerStore 32K x 8 nvSRAM 视图 Zentrum Mikroelektronik Dresden AG
STK15C68 256 Kbit (32K x 8) PowerStore nvSRAM 视图 Cypress Semiconductor
U635H16 PowerStore 2K x 8 nvSRAM 视图 Zentrum Mikroelektronik Dresden AG
U637256 CapStore 32K x 8 nvSRAM 视图 Unspecified
U632H16 PowerStore 2K x 8 nvSRAM 视图 Zentrum Mikroelektronik Dresden AG
STK16C88-3 256 Kbit (32K x 8) AutoStore+ nvSRAM 视图 Cypress Semiconductor
STK16C88-3 32K x 8 AutoStorePlus™ nvSRAM 3.3V QuantumTrap™ CMOS Nonvolatile Static RAM 视图 Unspecified
STK16C88 256 Kbit (32K x 8) AutoStore+ nvSRAM 视图 Cypress Semiconductor

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