EDBA164B4PR-1DITF-R datasheet(92/152 Pages) MICRON

92 / 152 page

Figure 66: MRR Command to Power-Down Entry

CK_c

CKE1

Tx + 1

Tx + 2

Tx + 3

Tx + 4

Tx + 5

Tx + 6

Tx + 7

Tx + 8

Tx + 9

CMD

DQS_c

MRR

OUT DOUT DOUT DOUT

tISCKE

CK_t

DQS_t

Note:

1. CKE can be registered LOW at (RL + RU(tDQSCK/tCK)+ BL/2 + 1) clock cycles after the

clock on which the MRR command is registered.

Figure 67: MRW Command to Power-Down Entry

CK_c

CKE1

CMD

tMRW

MRW

tISCKE

T10

T11

CK_t

Note:

1. CKE can be registered LOW tMRW after the clock on which the MRW command is regis-

tered.

Deep Power-Down

Deep power-down (DPD) is entered when CKE is registered LOW with CS_n LOW, CA0

HIGH, CA1 HIGH, and CA2 LOW at the rising edge of the clock. The NOP command

must be driven in the clock cycle following power-down entry. CKE must not go LOW

while MRR or MRW operations are in progress. CKE can go LOW while other operations

such as ACTIVATE, auto precharge, PRECHARGE, or REFRESH are in progress; however,

deep power-down IDD specifications will not be applied until those operations com-

plete. The contents of the array will be lost upon entering DPD mode.

In DPD mode, all input buffers except CKE, all output buffers, and the power supply to

internal circuitry are disabled within the device. VREFDQ can be at any level between 0

and VDDQ, and VREFCA can be at any level between 0 and VDD2 during DPD. All power

supplies (including VREF) must be within the specified limits prior to exiting DPD (see

AC and DC Operating Conditions).

216-Ball and 220-Ball, Dual-Channel LPDDR2 SDRAM

Deep Power-Down

09005aef85eb530a

216b_220b_2ch_2e0e_embedded_lpddr2.pdf – Rev. F 08 /16 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

EDBA164B4PR-1DITF-R 数据表(PDF) 92 Page - Micron Technology

EDBA164B4PR-1DITF-R 数据表(HTML) 92 Page - Micron Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载