SM5859AF Nippon Precision Circuits Inc, SM5859AF Datasheet - Page 10

• Manufacturer Part Number: SM5859AF
• Description: compression and non compression type antishock memory controller
• Manufacturer: Nippon Precision Circuits Inc

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