Electronic Components Datasheet Search |
|
U634H256S2C25G1 Datasheet(PDF) 7 Page - Simtek Corporation |
|
U634H256S2C25G1 Datasheet(HTML) 7 Page - Simtek Corporation |
7 / 15 page U634H256 7 August 15, 2006 STK Control #ML0048 Rev 1.1 Nonvolatile Memory Operations Mode Selection E W HSB A13 - A0 (hex) Mode I/O Power Notes H X H X Not Selected Output High Z Standby L H H X Read SRAM Output Data Active l L L H X Write SRAM Input Data Active LH H 0E38 31C7 03E0 3C1F 303F 0FC0 Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile STORE Output Data Output Data Output Data Output Data Output Data Output High Z Active k, l k, l k, l k, l k, l k LH H 0E38 31C7 03E0 3C1F 303F 0C63 Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile RECALL Output Data Output Data Output Data Output Data Output Data Output High Z Active k, l k, l k, l k, l k, l k X X L X STORE/Inhibit Output High Z ICC2/Standby m k: The six consecutive addresses must be in order listed (0E38, 31C7, 03E0, 3C1F, 303F, 0FC0) for a Store cycle or (0E38, 31C7, 03E0, 3C1F, 303F, 0C63) for a RECALL cycle. W must be high during all six consecutive cycles. See STORE cycle and RECALL cycle tables and dia grams for further details. The following six-address sequence is used for testing purposes and should not be used: 0E38, 31C7, 03E0, 3C1F, 303F, 339C. l: I/O state assumes that G ≤ VIL. Activation of nonvolatile cycles does not depend on the state of G. m: HSB initiated STORE operation actually occurs only if a WRITE has been done since last STORE operation. After the STORE (if any) completes, the part will go into standby mode inhibiting all operation until HSB rises. No. PowerStore Power Up RECALL/ Hardware Controlled STORE Symbol Conditions Min. Max. Unit Alt. IEC 24 Power Up RECALL Durationn, e tRESTORE 650 μs 25 STORE Cycle Duration tHLQX td(H)S VCC > 4.5 V 10 ms 26 HSB Low to Inhibit One tHLQZ tdis(H)S 1 μs 27 HSB High to Inhibit Offe tHHQX ten(H)S 700 ns 28 External STORE Pulse Widthe tHLHX tw(H)S 20 ns HSB Output Low Currente,o IHSBOL HSB = VOL 3mA HSB Output High Currente, o IHSBOH HSB = VIL 560 μA Low Voltage Trigger Level VSWITCH 4.0 4.5 V n: tRESTORE starts from the time VCC rises above VSWITCH. o: HSB is an I/O that has a week internal pullup; it is basically an open drain output. It is meant to allow up to 32 U634H256 to be ganged together for simultaneous storing. Do not use HSB to pullup any external circuitry other than other U634H256 HSB pins. |
Similar Part No. - U634H256S2C25G1 |
|
Similar Description - U634H256S2C25G1 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |