IS43LD16640D datasheet(21/146 Pages) ISSI

tên linh kiện	IS43LD16640D

Giải thích chi tiết về linh kiện	1Gb (x16, x32) Mobile LPDDR2 S4 SDRAM

PDF	146 Pages

Scroll/Zoom	100%

nhà sản xuất	ISSI [Integrated Silicon Solution, Inc]

Trang chủ	http://www.issi.com

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Integrated Silicon Solution, Inc. — www.issi.com

Rev. A

06/08/2023

IS43/46LD16640D

IS43/46LD32320D

MR10_Calibration (MA<7:0> = 0AH):

OP7

OP6

OP5

OP4

OP3

OP2

OP1

OP0

Calibration Code

OP<7:0>

Calibration Code

Write-only

0xFF: Calibration command after initialization

0xAB: Long calibration

0x56: Short calibration

0xC3: ZQ Reset

All others: Reserved

MR11:15_(Reserved) (MA<7:0> = 0BH- 0FH):

OP7

OP6

OP5

OP4

OP3

OP2

OP1

OP0

RFU

Notes:

1. Host processor shall not write MR10 with “Reserved” values.

2. LPDDR2 devices shall ignore calibration command, when a “Reserved” values is written into MR10.

3. See AC timing table for the calibration latency.

4. If ZQ is connected to VSSCA through RZQ, either the ZQ calibration function (see “MRW ZQ Calibration Command”) or

default calibration (through the ZQ RESET command) is supported. If ZQ is connected to VDDCA, the device operates

with default calibration,and ZQ calibration commands are ignored. In both cases, the ZQ connection must not change after

power is supplied to the device.

5. Devices that do not support calibration ignore the ZQ calibration command.

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