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Fabricante

KM44L8130BB-FZ

DDR SDRAM Specification Version 0.61

Samsung 

128Mb DDR SDRAM

8. AC Operating Conditions & Timming Specification

8.1 AC Operating Conditions

Target

Parameter/Condition

Input High (Logic 1) Voltage, DQ, DQS and DM signals

Input Low (Logic 0) Voltage, DQ, DQS and DM signals.

Input Differential Voltage, CK and CK inputs

Input Crossing Point Voltage, CK and CK inputs

Symbol

Min

VIH(AC) VREF + 0.35

VIL(AC)

VID(AC) 0.7

VIX(AC) 0.5*VDDQ-0.2

Max

VREF - 0.35

VDDQ+0.6

0.5*VDDQ+0.2

Unit

V

V

V

V

Note

1

2

Note 1. VID is the magnitude of the difference between the input level on CK and the input on CK.

2. The value of VIX is expected to equal 0.5*VDDQ of the transmitting device and must track variations in the DC level of the same.

Table 13. AC operating conditions

- 41 of 63 -

REV. 0.61 August 9. '99

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