h5tq4g43mmr Hynix Semiconductor, h5tq4g43mmr Datasheet - Page 26

• Manufacturer Part Number: h5tq4g43mmr
• Description: 4gb Ddr3 Sdram Ddp
• Manufacturer: Hynix Semiconductor

Rev. 0.1 /Aug 2008
7.3 34 ohm Output Driver DC Electrical Characteristics
A functional representation of the output buffer is shown in Figure . Output driver impedance RON is defined
by the value of the external reference resistor RZQ as follows:
RON34 = RZQ / 7 (nominal 34.3 W ±10% with nominal RZQ = 240 W ± 1%)
The individual pull-up and pull-down resistors (RONPu and RONPd) are defined as follows:
RON Pd
RON Pu
=
=
-------------- -
V Out
V DDQ V Out
--------------------------------------
I Out
Circuitry
other
RCV,
Like
To
...
Output Driver: Definition of Voltages and Currents
I Out
–
Chip in Drive Mode
under the condition that RONPd is turned off
under the condition that RONPu is turned off
Output Driver
RONpu
RONpd
Ipd
Ipu
Iout
H5TQ4G43MMR-xxC
H5TQ4G83MMR-xxC
VSSQ
Vout
VDDQ
DQ
26