SM5859AF Datasheet, PDF (10/33 Pages) Nippon Precision Circuits Inc – compression and non compression type antishock memory controller

SM5859AF
DRAM access timing (with 2 DRAMs)
NRAS
NCAS
(DRAM1 SELECT)
t RCD
2t CY
t RASL
5t CY
t CASL
3t CY
t RASH
3t CY
t CASH
5t CY
NCAS
(DRAM2 SELECT)
NCAS2
(DRAM1 SELECT)
NCAS2
(DRAM2 SELECT)
A0 to A9
D0 to D3
(WRITE)
D0 to D3
(READ)
NWE
(WRITE)
t RCD
2t CY
t RADS
1t CY
t RADH
1t CY
t CADS
1t CY
t CWDS
3t CY
t WCS
3t CY
t WEL
6t CY
t CASL
3t CY
t CADH
5t CY
t CWDH
3t CY
t CRDS
t CRDH
t CASH
5t CY
NWE
(READ)
NIPPON PRECISION CIRCUITS-10