EDB8164B4PR-1DATF-R datasheet(122/152 Pages) MICRON

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Figure 80: Output Driver

To other

circuitry

(RCV, etc.)

Output Driver

Chip in Drive Mode

ONPU

ONPD

OUT

DDQ

OUT

SSQ

Output Driver Impedance Characteristics with ZQ Calibration

Output driver impedance is defined by the value of the external reference resistor RZQ.

Typical RZQ is 240 ohms.

Table 83: Output Driver DC Electrical Characteristics with ZQ Calibration

Notes 1–4 apply to all parameters and conditions

RONnom

Resistor

VOUT

Min

Typ

Max

Unit

Notes



RON34PD

0.5 × VDDQ

0.85

1.00

1.15

RZQ/7

RON34PU

0.5 × VDDQ

0.85

1.00

1.15

RZQ/7



RON40PD

0.5 × VDDQ

0.85

1.00

1.15

RZQ/6

RON40PU

0.5 × VDDQ

0.85

1.00

1.15

RZQ/6



RON48PD

0.5 × VDDQ

0.85

1.00

1.15

RZQ/5

RON48PU

0.5 × VDDQ

0.85

1.00

1.15

RZQ/5



RON60PD

0.5 × VDDQ

0.85

1.00

1.15

RZQ/4

RON60PU

0.5 × VDDQ

0.85

1.00

1.15

RZQ/4



RON80PD

0.5 × VDDQ

0.85

1.00

1.15

RZQ/3

RON80PU

0.5 × VDDQ

0.85

1.00

1.15

RZQ/3



(optional)

RON120PD

0.5 × VDDQ

0.85

1.00

1.15

RZQ/2

RON120PU

0.5 × VDDQ

0.85

1.00

1.15

RZQ/2

Mismatch between

pull-up and pull-down

MMPUPD

–15.00

+15.00

Notes:

1. Applies across entire operating temperature range after calibration.

2. RZQ Ω

3. The tolerance limits are specified after calibration, with fixed voltage and temperature.

For behavior of the tolerance limits if temperature or voltage changes after calibration,

see Output Driver Temperature and Voltage Sensitivity.

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

Output Driver Impedance

09005aef85eb530a

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

122

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

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