256MB, 512MB (x64, DR)
144-PIN SDRAM SODIMM
Table 18: Serial Presence-Detect EEPROM DC Operating Conditions
All voltages referenced to VSS; VDDSPD = 2.3V to 3.6V
PARAMETER/CONDITION
SYMBOL
MIN
MAX
UNITS
VDD
VIH
VIL
VOL
ILI
3
3.6
V
V
Supply voltage
VDD × 0.7 VDD × 0.5
Input high voltage: Logic 1; All inputs
–1
–
VDD × 0.3
V
Input low voltage: Logic 0; All inputs
0.4
10
10
30
2
V
Output low voltage: IOUT = 3mA
–
µA
µA
µA
mA
Input leakage current: VIN = GND to VDD
Output leakage current: VOUT = GND to VDD
Standby current: SCL = SDA = VDD - 0.3V; All other inputs = GND or 3.3V ±10%
Power supply current: SCL clock frequency = 100 KHz
ILO
ISB
–
–
ICC
–
Table 19: Serial Presence-Detect EEPROM AC Operating Conditions
All voltages referenced to VSS; VDDSPD = 2.3V to 3.6V
PARAMETER/CONDITION
SYMBOL
MIN MAX UNITS
NOTES
tAA
tBUF
0.2
1.3
0.9
µs
µs
1
SCL LOW to SDA data-out valid
Time the bus must be free before a new transition can start
Data-out hold time
tDH
200
ns
tF
300
ns
2
SDA and SCL fall time
tHD:DAT
tHD:STA
tHIGH
tI
tLOW
tR
fSCL
tSU:DAT
tSU:STA
tSU:STO
tWRC
0
µs
Data-in hold time
0.6
0.6
µs
Start condition hold time
Clock HIGH period
µs
50
ns
Noise suppression time constant at SCL, SDA inputs
Clock LOW period
1.3
µs
0.3
µs
2
SDA and SCL rise time
400
KHz
ns
SCL clock frequency
100
0.6
0.6
Data-in setup time
µs
3
4
Start condition setup time
Stop condition setup time
WRITE cycle time
µs
10
ms
NOTE:
1. To avoid spurious START and STOP conditions, a minimum delay is placed between SCL = 1 and the falling or rising
edge of SDA.
2. This parameter is sampled.
3. For a restart condition, or following a WRITE cycle.
4. The SPD EEPROM WRITE cycle time (tWRC) is the time from a valid stop condition of a write sequence to the end of
the EEPROM internal erase/program cycle. During the WRITE cycle, the EEPROM bus interface circuit is disabled, SDA
remains HIGH due to pull-up resistor, and the EEPROM does not respond to its slave address.
pdf: 09005aef807924d2, source: 09005aef807924f1
SDF16C32_64x64HG.fm - Rev. E 4/06 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2006 Micron Technology, Inc. All rights reserved.
19
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