SM5903CF datasheet(9/31 Pages) NPC

部件名	SM5903CF

功能描述	compression and non compression type anti-shock memory controller

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制造商	NPC [Nippon Precision Circuits Inc]

网页	http://www.npc.co.jp/en

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NIPPON PRECISION CIRCUITS-9

SM5903CF

DRAM access timing (with single DRAM)

The NWE terminal output is fixed as "High-level" when selecting "READ".

DRAM access timing (with 2 DRAMs)

The NWE terminal output is fixed as "High-level" when selecting "READ".

NCAS terminal output is fixed as "High-level" when selecting "DRAM2".

NCAS2 terminal output is fixed as "High-level" when selecting "DRAM1".

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,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,

,,,,,,,

NCAS

A0 to A10

D0 to D3

(WRITE)

NRAS

D0 to D3

(READ)

NWE

(WRITE)

3

WCS

t

6

CRDH

t

CRDS

t

CWDH

t

CWDS

t

33

5

CADH

t

CADS

t

RADH

t

RADS

t

11

1

5

3

2

tRCD

tCASL

CASH

t

RASH

t

3

tCY

5

RASL

t

tCY

WEL

t

,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,

,,,,,,,

,,,,,,,,,

NCAS

(DRAM1 SELECT)

A0 to A9

NRAS

D0 to D3

(READ)

NCAS2

(DRAM2 SELECT)

,,,,,,,,,,,,,,

D0 to D3

(WRITE)

NWE

(WRITE)

5

3

25

3

1

3

5

25

3

RASH

t

RASL

t

RCD

ttCASL

CASH

t

CASH

t

tCASL

RDC

t

tRADS

RADH

t

CADS

t

CADH

t

CWDH

t

CWDS

t

CRDS

t

CRDH

t

WCS

t

tCY

WEL

t

6

tCY

WCS

t

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