M14D5121632A-2K Datasheet, PDF (16/64 Pages) Elite Semiconductor Memory Technology Inc. – Internal pipelined double-data-rate architecture; two data access per clock cycle

ESMT
M14D5121632A (2K)
AC Timing Parameter & Specifications - Contiuned
Parameter
Symbol
-1.8
Min.
Max.
-2.5
Min.
Max.
Unit Note
Minimum time clocks remains
ON after CKE asynchronously
drops low
t_DELAY
t_IS + t_CK
(avg)+t_IH
t_IS + t_CK
(avg)+t_IH
ns
Output impedance test driver
delay
t_OIT
0
12
0
12
ns
MRS command to ODT update
delay
t_MOD
0
12
0
12
ns
ODT turn-on delay
ODT turn-on
ODT turn-on (Power-Down
mode)
ODT turn-off delay
ODT turn-off
ODT turn-off (Power-Down
mode)
ODT to Power-Down entry
latency
t_AOND
2
2
2
2
t_CK
t_AON
t_AC(min.)
t_AC(max.) +
2575
t_AC(min.)
t_AC(max.) +
700
ps
14,16
t_AONPD
t_AC(min.) +
2000
3 x t_CK
+t_AC(max.) +
1000
t_AC(min.) +
2000
2 x t_CK
+t_AC(max.) +
1000
ps
t_AOFD
2.5
2.5
2.5
2.5
t_CK
15,17,
18
t_AOF
t_AC(min.)
t_AC(max.) +
600
t_AC(min.)
t_AC(max.) +
600
ps
t_AOFPD
t_AC(min.) +
2000
2.5 x t_CK
+t_AC(max.) +
1000
t_AC(min.) +
2000
2.5 x t_CK
+t_AC(max.) +
1000
ps
t_ANPD
4
3
t_CK
ODT Power-Down exit latency
t_AXPD
11
8
t_CK
Note:
1. t_DAL[nCLK] = WR[nCLK] + tn_RP [nCLK] =WR+RU{t_RP[ps]/t_CK(avg)[ps]}, where WR is the value programmed in the mode
register set and RU status for round up.
2. AL: Additive Latency.
3. MRS A12 bit defines which Active Power-Down Exit timing to be applied.
4. The figures of Input Waveform Timing 1 and 2 are referenced from the input signal crossing at the VIH (AC) level for a rising
signal and VIL (AC) for a falling signal applied to the device under test.
5. The figures of Input Waveform Timing 1 and 2 are referenced from the input signal crossing at the VIL (DC) level for a rising
signal and VIH (DC) for a falling signal applied to the device under test.
6. t_HP is the minimum of the absolute half period of the actual input clock. t_HP is an input parameter but not an input
specification parameter. It is used in conjunction with t_QHS to derive the DRAM output timing t_QH. The value to be used for t_QH
calculation is determined by the following equation;
t_HP = Min ( t_CH (abs), t_CL (abs) ), where:
t_CH (abs) is the minimum of the actual instantaneous clock HIGH time;
t_CL (abs) is the minimum of the actual instantaneous clock LOW time;
Elite Semiconductor Memory Technology Inc.
Publication Date : May 2014
Revision : 1.4
16/64