PCIMX536AVV8C datasheet(30/178 Pages) FREESCALE

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i.MX53xA Automotive and Infotainment Applications Processors, Rev. 2

Freescale Semiconductor

Electrical Characteristics

4.3.2.2

LPDDR2 Mode I/O DC Parameters

The LPDDR2 interface fully complies with JESD209-2B LPDDR2 JEDEC standard release June, 2009.

Table 11. DDR2 I/O DC Electrical Parameters1

1 Note that the JEDEC SSTL_18 specification (JESD8-15a) for a SSTL interface for class II operation supersedes any

specification in this document.

Parameters

Symbol

Test Conditions

Min

Typ

Max

Unit

High-level output voltage2

2 OVDD is the I/O power supply (1.7 V–1.9 V for DDR2)

Voh

—

0.9*OVDD

—

Low-level output voltage

Vol

—

0.1*OVDD

Output minimum Source Current3

3 (Vout - OVDD) / Ioh must be less than 21

Ω for values of Vout between OVDD and OVDD-0.28 V.

Ioh

OVDD=1.7 V,

Vout=1.42 V

–13.4

—

Output min Sink Current4

4 Vout / Iol must be less than 21

Ω for values of Vout between 0 V and 280 mV.

Iol

OVDD=1.7 V,

Vout=280 mV

13.4

—

Input Reference Voltage

Vref

0.49*OVDD

0.5*OVDD

0.51*OVDD

DC input High Voltage (data pins)

Vihd

(dc)

—

Vref+0.125V

—

OVDD+0.3

DC input Low Voltage (data pins)

Vild (dc)

—

–0.3

—

Vref-0.125V

DC Input voltage range of each

differential input5

5 Vin(dc) specifies the allowable DC voltage exertion of each differential input.

Vin (dc)

—

–0.3

—

OVDD+0.3

DC Differential input voltage required for

switching 6

6 Vid(dc) specifies the input differential voltage |Vtr-Vcp| required for switching, where Vtr is the “true” input level and Vcp is the

“complementary” input level. The minimum value is equal to Vih(dc) -Vil(dc).

Vid (dc)

—

0.25

—

OVDD+0.6

Termination Voltage

Vtt

Vref – 0.04

Vref

Vref + 0.04

Input current (no pull-up/down)

Iin

Vin = 0 V

Vin=OVDD

—

μA

Keeper Circuit Resistance

—

1307

7 Use an off-chip pull resistor of less than 60 k

Ω to override this keeper.

—k

Table 12. LPDDR2 I/O DC Electrical Parameters1

Parameters

Symbol

Test Conditions

Min

Typ

Max

Unit

High-level output voltage

Voh

—

0.9*OVDD

—

Low-level output voltage

Vol

—

0.1*OVDD

Input Reference Voltage

Vref

0.49*OVDD

0.5*OVDD

0.51*OVDD

DC input High Voltage

Vih(dc)

—

Vref+0.13V

—

OVDD

DC input Low Voltage

Vil(dc)

—

OVSS

—

Vref-0.13V

PCIMX536AVV8C Datasheet(PDF) 30 Page - Freescale Semiconductor, Inc

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