K4B1G0446C Datasheet, PDF (25/63 Pages) Samsung semiconductor – 1Gb C-die DDR3 SDRAM Specification

K4B1G04(08/16)46C
1Gb DDR3 SDRAM
9.7.1 Output Drive Temperature and Voltage sensitivity
If temperature and/or voltage change after calibration, the tolerance limits widen according to table below
∆T = T - T(@calibration); ∆V = VDDQ - VDDQ (@calibration); VDD = VDDQ
*dR_ONdT and dR_ONdV are not subject to production test but are verified by design and characterization
[ Table 23 ] Output Driver Sensitivity Definition
Min
RONPU@V_OHDC
0.6 - dR_ONdTH * |∆T| - dR_ONdVH * |∆V|
RON@V_OMDC
0.9 - dR_ONdTM * |∆T| - dR_ONdVM * |∆V|
RONPD@_VOLDC
0.6 - dR_ONdTL * |∆T| - dR_ONdVL * |∆V|
Max
1.1 + dR_ONdTH * |∆T| + dR_ONdVH * |∆V|
1.1 + dR_ONdTM * |∆T| + dR_ONdVM * |∆V|
1.1 + dR_ONdTL * |∆T| + dR_ONdVL * |∆V|
Units
RZQ/7
RZQ/7
RZQ/7
[ Table 24 ] Output Driver Voltage and Temperature Sensitivity
Min
dR_ONdTM
0
dR_ONdVM
0
dR_ONdTL
0
dR_ONdVL
0
dR_ONdTH
0
dR_ONdVH
0
Max
1.5
0.15
1.5
TBD
1.5
TBD
Units
%/°C
%/mV
%/°C
%/mV
%/°C
%/mV
9.8 On-Die Termination (ODT) Levels and I-V Characteristics
On-Die Termination effective resistance RTT is defined by bits A9, A6 and A2 of MR1 register.
ODT is applied to the DQ,DQ, DQS/DQS and TDQS,TDQS (x8 devices only) pins.
A functional representation of the on-die termination is shown below. The individual pull-up and pull-down resistors (RTTpu and RTTpd)
are defined as follows :
RTTpu =
RTTpd =
VDDQ-Vout
l Iout l
Vout
l Iout l
under the condition that RTTpd is turned off
under the condition that RTTpu is turned off
On-Die Termination : Definition of Voltages and Currents
To
other
circuitry
like
RCV,
...
Output Driver
Ipu
RTT
Pu
RTT
Pd
Ipd
VDDQ
Iout=Ipd-Ipu
DQ
Iout
Vout
VSSQ
Figure 13. On-Die Termination : Definitionof Voltages and Currents
Page 25 of 63
Rev. 1.0 June 2007