IS43LD16640C datasheet(86/142 Pages) ISSI

86 / 142 page

IS43/46LD16640C

IS43/46LD32320C

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

Rev. C

07/02/2021

® Long-term Support

World Class Quality

Input/Output Capacitance

Parameter

Symbol

LPDDR2 1066-466

LPDDR2 400-200

Unit

Notes

MIN

MAX

MIN

MAX

Input capacitance, CK and CK#

CCK

1.0

2.0

1.0

2.0

2, 3

Input capacitance delta, CK and CK#

CDCK

0.20

0.25

2, 3, 4

Input capacitance, all other input-

only pins

1.0

2.0

1.0

2.0

2, 3, 5

Input capacitance delta, all other input-

only pins

CDI

–0.40

+0.40

–0.50

+0.50

2, 3, 6

Input/output capacitance, DQ, DM, DQS,

DQS#

CIO

1.25

2.5

1.25

2.5

2, 3, 7, 8

Input/output capacitance delta, DQS,

DQS#

CDDQS

0.25

0.30

2, 3, 8, 9

Input/output capacitance delta, DQ, DM

CDIO

–0.5

+0.5

–0.6

+0.6

2, 3, 8, 10

Notes:

1. TC –25˚C to +105˚C; VDDQ = 1.14–1.3V; VDDCA = 1.14–1.3V; VDD1 = 1.7–1.95V; VDD2 = 1.14–1.3V).

2. This parameter applies to die devices only (does not include package capacitance).

3. This parameter is not subject to production testing. It is verified by design and characterization. The capacitance is measured

according to

JEP147 (procedure for measuring input capacitance using a vector network analyzer), with VDD1, VDD2, VDDQ, VSS, VSSCA,

and

VSSQ applied; all other pins are left floating.

4. Absolute value of CCK - CCK#.

5. CI applies to CS#, CKE, and CA[9:0].

6. CDI = CI - 0.5 × (CCK + CCK#).

7. DM loading matches DQ and DQS.

8. MR3 I/O configuration drive strength OP[3:0] = 0001b (34.3 ohm typical).

9. Absolute value of CDQS and CDQS#.

10. CDIO = CIO - 0.5 × (CDQS + CDQS#) in byte-lane.

11. Maximum external load capacitance on ZQ pin: 5pF.

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