V53C16258H Datasheet, PDF (13/20 Pages) Mosel Vitelic, Corp – HIGH PERFORMANCE 256K X 16 EDO PAGE MODE CMOS DYNAMIC RAM OPTIONAL SELF REFRESH

MOSEL VITELIC
Waveforms of CAS-before-RAS Refresh Counter Test Cycle
RAS ^{V IH}
V _IL
UCAS, LCAS ^VIH
V _IL
t_{RAS (1)}
t _{CHR (49)}
t_{CSR (47)}
t_{CP (43)}
t _{RSH (W)(25)}
t _{CAS (5)}
ADDRESS ^VIH
V _IL
READ CYCLE
V _IH
WE
V _IL
V _IH
I/O
V _IL
WRITE CYCLE
V _IH
WE
V _IL
t _{RCS (7)}
t _{WCS (27)}
t _{LZ (21)}
t _{RWL (31)}
t _{CWL (26)}
t _{WCH (28)}
D_OUT
V _IH
OE
V _IL
I/O ^{V IH}
V _IL
t
DS (32)
t _{DH (33)}
D _IN
V53C16258H
t _{RP (3)}
t _{RRH (15)}
t _{RCH (14)}
t _{HZ (22)}
16258H-13
Waveforms of CAS-before-RAS Refresh Cycle
RAS ^{V IH}
V _IL
UCAS, LCAS ^{V IH}
V _IL
I/O ^{V OH}
V _OL
t _{RP (3)}
t _{RPC (48)}
t _{CP (43)}
t _{HZ (22)}
t _{RC (2)}
t _{RAS (1)}
t _{CSR (47)}
t _{CHR (49)}
NOTE: WE, OE, A0–A8 = Don’t care
t _{RP (3)}
16258H-14
V53C16258H Rev. 3.8 November 1999
13
Don’t Care
Undefined