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PDF N34C04 Data sheet ( Hoja de datos )
| Número de pieza | N34C04 | |
| Descripción | 4-Kb Serial SPD EEPROM | |
| Fabricantes | ON Semiconductor | |
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N34C04
4-Kb Serial SPD EEPROM
for DDR4 DIMM
Description
The N34C04 is a 4−Kb serial EEPROM, which implements the
JEDEC JC42.4 (EE1004−v) Serial Presence Detect (SPD)
specification for DDR4 DIMMs and supports the Standard (100 kHz),
Fast (400 kHz) and Fast Plus (1 MHz) I2C protocols.
One of the two available 2−Kb EEPROM banks (referred to as SPD
pages in the EE1004−v specification) is activated for access at
power−up. After power−up, banks can be switched via software
command. Each of the four 1−Kb EEPROM blocks can be Write
Protected by software command.
Features
• JEDEC JC42.4 (EE1004−v) Serial Presence Detect (SPD) Compliant
• Temperature Range: −40°C to +125°C
• Supply Range: 1.7 V − 3.6 V
• I2C / SMBus Interface
• Schmitt Triggers and Noise Suppression Filters on SCL and SDA
Inputs
• 16−Byte Page Write Buffer
• Hardware Write Protection for Entire Memory
• Low Power CMOS Technology
• 2 x 3 x 0.5 mm UDFN Package
• These Devices are Pb−Free and are RoHS Compliant
VCC
SCL
A2, A1, A0
WP
N34C04
SDA
VSS
Figure 1. Functional Symbol
www.onsemi.com
1
UDFN8
MU3 SUFFIX
CASE 517AZ
PIN CONFIGURATION
A0 1
A1
(Top View)
A2
VSS
VCC
WP
SCL
SDA
UDFN (HU4)
For the location of Pin 1, please consult the
corresponding package drawing.
MARKING DIAGRAM
D2U
AZZ
YM
G
UDFN8
D2U
A
ZZ
Y
M
G
= Specific Device Code
= Assembly Location Code
= Assembly Lot Number (Last Two Digits)
= Production Year (Last Digit)
= Production Month (1 − 9, O, N, D)
= Pb−Free Package
PIN FUNCTIONS
Pin Name
Function
A0, A1, A2
SDA
SCL
WP
Device Address Input
Serial Data Input/Output
Serial Clock Input
Write Protect Input
VCC
VSS
DAP
Power Supply
Ground
Backside Exposed DAP at VSS
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
November, 2016 − Rev. 0
1
Publication Order Number:
N34C04/D
1 page  
SCL FROM
MASTER
N34C04
1
8
9
DATA OUTPUT
FROM TRANSMITTER
DATA OUTPUT
FROM RECEIVER
START
Figure 3. Acknowledge Timing
ACKNOWLEDGE
SCL
70%
tSU:STA
SDA IN
tF tLOW
70%
30%
tHD:STA
70%
30%
SDA OUT
tHIGH
tR
70%
30%
tHD:DAT
70%
tSU:DAT
30%
tHD:DAT
70%
30%
Figure 4. Bus Timing
70%
30%
tSU:STO
70%
70%
tBUF
Table 9. COMMAND SET (Notes 11, 12)
Function Specific Preamble
Select Address
R/W_n
A0 Pin
Function
Read EE Memory
Abbr
RSPD
b7 b6 b5 b4
b3
b2
b1
b0
1
0
1
0 LSA2 LSA1 LSA0
1
0 or 1
Write EE Memory
WSPD
0
Set Write Protection, block 0
SWP0 0 1 1 0
0
0
1
0
VHV
Set Write Protection, block 1
SWP1
1000
VHV
Set Write Protection, block 2
SWP2
1010
VHV
Set Write Protection, block 3
SWP3
0000
VHV
Clear All Write Protection
CWP
0110
VHV
Read Protection Status, block 0 RPS0
0 0 1 1 0, 1 or VHV
Read Protection Status, block 1 RPS1
1 0 0 1 0, 1 or VHV
Read Protection Status, block 2 RPS2
1 0 1 1 0, 1 or VHV
Read Protection Status, block 3 RPS3
0 0 0 1 0, 1 or VHV
Set SPD Page Address to 0
(Select Lower Bank)
SPA0
1 1 0 0 0, 1 or VHV
Set SPD Page Address to 1
(Select Upper Bank)
SPA1
1 1 1 0 0, 1 or VHV
Read SPD Page Address
RPA
1 1 0 1 0, 1 or VHV
Reserved
−
All Other Encodings
11. LSAx stands for Logic State of Address pin x.
12. If VHV is not applied on the A0 pin during SWP/CWP commands, the N34C04 will respond with NoACK after the 3rd byte and will not execute
the SWP/CWP instruction. During RPS/SPA/RPA commands the state of pin A0 must be stable for the duration of the sequence.
www.onsemi.com
5
5 Page 
N34C04
Ordering Information
Device Order Number
Specific
Device Marking
Package
Type
Temperature
Range
Lead
Finish
Shipping
N34C04MU3ETG
D2U
UDFN−8
−40°C to +125°C
NiPdAu
Tape & Reel,
4,000 Units / Reel
18. All packages are RoHS−compliant (Lead−free, Halogen−free)
19. The standard lead finish is NiPdAu.
20. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
ON Semiconductor is licensed by Philips Corporation to carry the I2C Bus Protocol.
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
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PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: [email protected]
◊
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USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
www.onsemi.com
11
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
N34C04/D
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet N34C04.PDF ] | |
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