SM5901AF Datasheet, PDF (29/31 Pages) Nippon Precision Circuits Inc – compression and non compression type anti-shock memory controller with built-in 1M DRAM

SM5901AF
DRAM write timing (NRAS, NCAS2, NWE, A0 to A8, D0 to D3)
Write timing (when external DRAM is used)
NRAS
NCAS2
(DRAM2 SSELECT)
A0 to A8
D0 to D3
(WRITE)
t RASL
t RCD
t CASL
t RADS
t RADH
t CADS
t CADH
t CWDS
t WEL
t CWDH
t RASH
t CASH
NWE
DRAM read timing (NRAS, NCA2, NWE, A0 to A8, D0 to D3)
Read timing (when external DRAM is used)
NRAS
NCAS2
(DRAM2 SSELECT)
A0 to A8
D0 to D3
(READ)
t RASL
t RASH
t RCD
t CASL
t CASH
t RADS
t RADH
t CADS
t CADH
t CRDS
t CRDH
NWE