MSM518122 Datasheet, PDF (13/45 Pages) OKI electronic componets – 131,072-Word x 8-Bit Multiport DRAM

¡ Semiconductor
MSM518122
Read Modify Write Cycle
t_RWC
t_RAS
t_RP
RAS ^{VIH –}
t_AR
V_IL –
t_CSH
t_CRP
t_RCD
t_RSH
t_CPN
CAS ^{VIH –}
t_CAS
V_IL –

,,
 ^A0
-
A8
V_IH
V_IL
–
–
WB/WE
V_IH
V_IL
–
–
DT/OE
V_IH
V_IL
–
–
t_RAD
t_ASR t_RAH
Row Address
t_ASC
t_CAH
Column Address
t_WSR t_RWH
t_RCS
*1
t_THS
t_THH
t_CWD
t_AWD
t_RWD
t_CWL
t_RWL
t_WP
t_OEH
t_FHR
t_FSR tRFH
t_FSC
t_CFH
, ^DSF
V_IH
V_IL
–
–
IN
V_IH
V_IL
–
–
W1/IO1 -
W8/IO8
OUT
V_OH–
V_OL –
t_MS tMH
WM1 Data
t_DZC
t_DZO
t_OED
t_RAC
t_AA
Open
t_OEA
t_CAC
t_OEZ
Valid
Data-out
t_DS
t_DH
Valid
Data-in
"H" or "L"
*1 WB/WE
0
1
WM1 data:
W1/IO1 - W8/IO8
WM1 data
Don’t Care
0: Write Disable
1: Write Enable
Cycle
Write per Bit
Normal Write
13/45