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TMS66416410 Datasheet(PDF) 7 Page - Texas Instruments |
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TMS66416410 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 56 page TMS664414, TMS664814, TMS664164 4 194 304 BY 4-BIT/2 097 152 BY 8-BIT/1 048 576 BY 16-BIT BY 4-BANK SYNCHRONOUS DYNAMIC RANDOM-ACCESS MEMORIES SMOS695A – APRIL 1998 – REVISED JULY 1998 7 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 operation (continued) Table 2. Clock-Enable (CKE) Command Truth Table† COMMAND STATE OF BANK(S) CKE (n – 1) CKE (n) CS (n) RAS (n) CAS (n) W (n) MNEMONIC Self-refresh entry All banks = deac H L L L L H SLFR Power-down entry at n + 1‡ All banks = no access operation§ H L X X X X PDE Self refresh exit All banks = L H L H H H — Self-refresh exit self-refresh L H H X X X — Power-down exit¶ All banks = power down L H X X X X — CLK suspend at n + 1 All banks = access operation§ H L X X X X HOLD CLK suspend exit at n + 1 All banks = access operation§ L H X X X X — † For execution of these commands, A0 – A13 (n) and DQMx (n) are don’t care entries. ‡ On cycle n, the device executes the respective command (listed in Table 1). On cycle (n+1), the device enters the power-down mode. § A bank is no longer in an access operation one cycle after the last data-out cycle of a READ (READ-P) operation, and two cycles after the last data-in cycle of a WRT (WRT-P) operation. Neither the PDE nor the HOLD command is allowed on the cycle immediately following the last data-in cycle of a WRT (WRT-P) operation. ¶ If setup time from CKE high to the next CLK high satisfies tCESP, the device executes the respective command (listed in Table 1). Otherwise, either the DESL or NOOP command must be applied before any other command. Legend: n = CLK cycle number L = Logic low H = Logic high X = Don’t care (either logic high or logic low) deac = Deactivated |
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