EBD52RC8AKFA datasheet(7/18 Pages) ELPIDA

Part #	EBD52RC8AKFA

Description	512MB Registered DDR SDRAM DIMM

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Manufacturer	ELPIDA [Elpida Memory]

Direct Link	http://www.elpida.com/en

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7 / 18 page

EBD52RC8AKFA

Preliminary Data Sheet E0375E10 (Ver. 1.0)

7

Block Diagram

DM0/DQS9

RS

DQS0

RS

DQ0 to DQ7

8

RS

VDD

D0 to D17

VSS

VREF

VDDID

open

/CS0

/CS1

BA0 to BA1

A0 to A12

/RAS

/CAS

CKE0

CKE1

/WE

/RCS0 -> /CS: SDRAMs D0 to D8

/RCS1 -> /CS: SDRAMs D9 to D17

RBA0 to RBA1 -> BA0 to BA1: SDRAMs D0 to D17

RA0 to RA12 -> A0 to A12: SDRAMs D0 to D17

/RRAS -> /RAS: SDRAMs D0 to D17

/RCAS -> /CAS: SDRAMs D0 to D17

RCKE0 -> CKE: SDRAMs D0 to D8

RCKE1 -> CKE: SDRAMs D9 to D17

/RWE -> /WE: SDRAMs D0 to D17

R

E

G

I

S

T

E

R

PCK

/PCK

CK0, /CK0

PLL*

/RESET

Note: Wire per Clock loading table/Wiring diagrams.

DM

DQS

I/O0 to

I/O7

/CS

D0

DM

DQS

I/O0 to

I/O7

/CS

D9

DM1/DQS10

RS

DQS1

RS

DQ8 to DQ15

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D1

DM

DQS

I/O0 to

I/O7

/CS

D10

DM2/DQS11

RS

DQS2

RS

DQ16 to DQ23

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D2

DM

DQS

I/O0 to

I/O7

/CS

D11

DM3/DQS12

RS

DQS3

RS

DQ24 to DQ31

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D3

DM

DQS

I/O0 to

I/O7

/CS

D12

DM4/DQS13

RS

DQS4

RS

DQ32 to DQ39

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D4

DM

DQS

I/O0 to

I/O7

/CS

D13

DM5/DQS14

RS

DQS5

RS

DQ40 to DQ47

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D5

DM

DQS

I/O0 to

I/O7

/CS

D14

DM6/DQS15

RS

DQS6

RS

DQ48 to DQ55

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D6

DM

DQS

I/O0 to

I/O7

/CS

D15

DM7/DQS16

RS

DQS7

RS

DQ56 to DQ63

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D7

DM

DQS

I/O0 to

I/O7

/CS

D16

DM8/DQS17

RS

DQS8

RS

CB0 to CB7

8

RS

DM

DQS

I/O0 to

I/O7

/CS

D8

DM

DQS

I/O0 to

I/O7

/CS

D17

/RCS0

/RCS1

* D0 to D17: 256M bits DDR SDRAM

U0: 2k bits EEPROM

RS: 22Ω

PLL: CDCV857

Register: SSTV16857

Serial PD

SDA

A0

A1

A2

SA0

SA1

SA2

SCL

U0

SDA

Notes:

1. The SDA pull-up resistor is required due to

the open-drain/open-collector output.

2. The SCL pull-up resistor is recommended

because of the normal SCL line inacitve

"high" state.

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