SM5859AF Datasheet, PDF (31/33 Pages) Nippon Precision Circuits Inc – compression and non compression type antishock memory controller

SM5859AF
DRAM read timing (NRAS, NCAS, NOE, NWE, A0 to A9, D0 to D3)
Read timing (with single DRAM)
t RASL
t RASH
NRAS
t RCD
t CASL
t CASH
NCAS
t RADS
t RADH
t CADS
t CADH
A0 to A9
D0 to D3
(READ)
NOE
(READ)
t OEL
t CRDS
t CRDH
NWE
(READ)
Read timing (with 2 DRAMs)
NRAS
NCAS
(DRAM1 SELECT)
t RASL
t RCD
t CASL
t RASH
t CASH
NCAS
(DRAM2 SELECT)
NCAS2
(DRAM1 SELECT)
NCAS2
(DRAM2 SELECT)
A0 to A9
D0 to D3
(READ)
t RCD
t RADS
t RADH
t CADS
t CASL
t CADH
t CRDS
t CRDH
t CASH
NWE
(READ)
NIPPON PRECISION CIRCUITS-31