W97AH6KB datasheet(80/127 Pages) WINBOND

80 / 127 page

W97AH6KB / W97AH2KB

Publication Release Date: May 15, 2014

Revision: A01-001

- 80 -

8.2.2

Input Leakage Current

Parameter/Condition

Symbol

Min

Max

Unit

Notes

Input Leakage current

For CA, CKE, CS_n, CK_t, CK_c

Any input 0V

≤ VIN ≤ VDDCA

(All other pins not under test = 0V)

-2

µA

VREF supply leakage current

VREFDQ = VDDQ/2 or VREFCA = VDDCA/2

(All other pins not under test = 0V)

IVREF

-1

µA

Notes:

1. The minimum limit requirement is for testing purposes. The leakage current on VREFCA and VREFDQ pins should be minimal.

2. Although DM is for input only, the DM leakage shall match the DQ and DQS_t/DQS_c output leakage specification.

8.2.3

Operating Temperature Conditions

Parameter/Condition

Symbol

Min

Max

Unit

Standard

TOPER

-40

°C

Extended

105

°C

Notes:

1. Operating Temperature is the case surface temperature on the center/top side of the LPDDR2 device. For the measurement conditions, please

refer to JESD51-2 standard.

2. Some applications require operation of LPDDR2 in the maximum temperature conditons in the Extended Temperature Range between 85°C

and 105°C case temperature. For LPDDR2 devices, some derating is neccessary to operate in this range. See the MR4 Device Temperature

(MA[7:0] = 04h) table.

3. Either the device operating temperature or the temperature sensor (See section 7.4.21

“Temperature Sensor”) may be used to set an

appropriate refresh rate, determine the need for AC timing derating and/or monitor the operating temperature. When using the temperature

sensor, the actual device case temperature may be higher than the TOPER rating that applies for the Standard or Extended Temperature

Ranges. For example, TCASE may be above 85ºC when the temperature sensor indicates a temperature of less than 85°C.

4. All parts list in section 3 ordering information table will not guarantee to meet AC specification in the range of extended temperature range.

8.2.4

AC and DC Input Measurement Levels

8.2.4.1

AC and DC Logic Input Levels for Single-Ended Signals

8.2.4.1.1

Single-Ended AC and DC Input Levels for CA and CS_n Inputs

Symbol

Parameter

LPDDR2-800/1066

Unit

Notes

Min

Max

VIHCA(AC)

AC input logic high

Vref + 0.220

Note 2

1, 2

VILCA(AC)

AC input logic low

Note 2

Vref - 0.220

1, 2

VIHCA(DC)

DC input logic high

Vref + 0.130

VDDCA

VILCA(DC)

DC input logic low

VSSCA

Vref - 0.130

VRefCA(DC)

Reference Voltage for CA and CS_n inputs

0.49 * VDDCA

0.51 * VDDCA

3, 4

Notes:

1. For CA and CS_n input only pins. Vref = VrefCA(DC).

2. See section 8.2.5.5

“Overshoot and Undershoot Specifications”.

3. The ac peak noise on VRefCA may not allow VRefCA to deviate from VRefCA(DC) by more than ± 1% VDDCA (for reference: approx.

± 12 mV).

4. For reference: approx. VDDCA/2 ± 12 mV.

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