Datasheet
Table Of Contents
- Description
- Fetures
- Ordering Information
- Key Parameters
- Speed Grade
- Address Table
- Pin Descriptions
- Input/Output Functional Descriptions
- Pin Assignments
- Functional Block Diagram
- Absolute Maximum Ratings
- AC & DC Operating Conditions
- AC & DC Input Measurement Levels
- Vref Tolerances
- AC and DC Logic Input Levels for Differential Signals
- AC & DC Output Measurement Levels
- Overshoot and Undershoot Specifications
- Refresh parameters by device density
- Standard Speed Bins
- IDD and IDDQ Specification Parameters and Test Conditions
- IDD Specifications (Tcase: 0 to 95oC)
- Module Dimensions
Rev. 1.0/Sep. 2012 7
SDA I/O —
This bidirectional pin is used to transfer data into or out of the SPD EEPROM. A resistor
must be connected from the SDA bus line to V
DDSPD
on the system planar to act as a
pullup.
SCL IN —
This signal is used to clock data into and out of the SPD EEPROM. A resistor may be con-
nected from the SCL bus time to V
DDSPD
on the system planar to act as a pullup.
EVENT
OUT
(open
drain)
Active Low
This signal indicates that a thermal event has been detected in the thermal sensing
device.The system should guarantee the electrical level requirement is met for the
EVENT
pin on TS/SPD part.
No pull-up resister is provided on DIMM.
V
DDSPD
Supply
Serial EEPROM positive power supply wired to a separate power pin at the connector
which supports from 3.0 Volt to 3.6 Volt (nominal 3.3V) operation.
RESET
IN
The RESET
pin is connected to the RESET pin on the register and to the RESET pin on
the DRAM.
TEST Used by memory bus analysis tools (unused (NC) on memory DIMMs)
Symbol Type Polarity Function