GLT41116 Datasheet, PDF (6/16 Pages) List of Unclassifed Manufacturers – 64k x 16 CMOS Dynamic RAM with Fast Page Mode

GLT41116
AC Characteristics (0 °C ≤ T_A ≤ 70 °C, V_CC = 5.0V ± 10%) ^{[1] [2]}
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Parameter
Symbol Min Max Min Max Min Max Min Max Units Notes
Fast Page Mode Read Modify Write Cycle Time
CAS Precharge Time (Fast Page Mode)
RAS Pulse Width (Fast PAge Mode)
RAS Hold Time From CAS Precharge
Access Time From OE
OE to Delay Time
Output Buffer Turn-off Delay Time From OE
OE Hold Time
WE Hold Time (Hidden Refresh Cycle)
Refresh Time (256 Cycles)
t_PRWC
t_CP
t_RASP
t_RHCP
t_OEA
t_OED
t_OEZ
t_OEH
t_WHR
t_REF
48
–
60
–
53
–
65
–
6
–
6
–
7
–
7
–
30 100k 35 100k 40 100k 45 100k
25
–
25
–
25
–
30
–
–
10
–
11
–
12
–
12
8
–
8
–
8
–
8
–
3
–
3
8
3
8
3
8
6
–
6
–
7
–
7
–
15
–
15
–
15
–
15
–
4
–
4
–
4
–
4
ns
ns
ns
ns
ns
ns
ns
[5]
ns
ns
ms
1. An initial pause of 100 µs is required after power-up followed by any 8 RAS only Refresh or CAS before RAS Refresh Cycles to initialize the internal circuit.
2. V_IH (min) and V_IL (min) are reference levels for measuring timing of input signals. Transition times are measured between V_IH (min) and V_IL (max), AC measurements as-
sume t_T = 3 ns.
3. Measured with an equivalent to 2 TTL loads and 100 pF.
4. For read cycles, the access time is defined as follows:
Input Conditions
t_RAD ≤ t_RAD (max.) and t_RCD ≤ t_RCD (max.)
t_RAD (max.) < t_RAD and t_RCD ≤ t_RCD (max.)
t_RCD (max). < t_RCD
Access Time
t_RAC (Max.)
t_AA (Max.)
t_CAC (Max.)
t_RAD (max.) and t_RCD (max.) indicate the points which the access time changes and are not the limits of operation.
5. t_OFF (max.) and t_OEZ (max.) define the time at which the output achieves the open circuit condition and are not referenced to V_OH or V_OL.
6. t_CRP (min.) requirement should be applicable for RAS, CAS cycle preceded by any cycles.
7. Either t_RCH (min.) or t_RRH (min) must be satisfied for a read cycle.
8. t_WP (min.) is applicable for late write cycle or read modify write cycle. In early write cycles, t_WCH (min.) should be satisfied.
9. t_WCS, t_RWD, t_CWD and t_AWD are non-restrictive operating parameters. They are included in the data sheet as electric characteristics only. If t_WCS ≥ t_WCS (min.), the cycle
is an early write cycle and the data output will remain high impedance for the duration of the cycle. If t_CWD ≥ t_CWD (min.), t_RWD ≥ t_RWD (min.) and t_AWD ≥ t_AWD (min.),
then the cycle is a read-modify-write cycle and the data output will contain the data read from the selected address. If neither of the above conditions is satisfied, the
condition of the data out is indeterminate.
10. This specification is referenced to CAS falling edge in early write cycles and to WE falling edge in late write orr read modify write cycles.
11. t_AR, t_WCR, and t_DHR are referenced to t_RAD(max.).
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G-LINK Technology
July 1998 (Rev. 1)