GM71CS18163CL
GM71C18163C
Rev 0.1 / Apr’ 01
Read, Write, Read-Modify-Write and Refresh Cycles (Common Parameters)
Symbol Parameter
Note
Max
Unit
Min MaxMin MaxMin
tRC
Random Read or Write Cycle Time 84 - 104 - 124 -
tRP
RAS Precharge Time 30 - 40 - 50 -
tRAS
RAS Pulse Width 50 10,000
60
10,000
70
10,000
tCAS
CAS Pulse Width 7 10,000 10,000 10,00010 13
tASR
Row Address Set up Time 0 - - -0 0
tRAH
Row Address Hold Time 7 - - -10 10
tASC
Column Address Set-up Time 0 - - -0 0
tCAH
Column Address Hold Time 7 - - -10 13
tRCD RAS to CAS Delay Time 11 37 45 5214 14 3
tRAD
RAS to Column Address Delay Time 9 25 30 3512 12 4
tRSH RAS Hold Time 10 - - -13 13
tCSH CAS Hold Time 35 - - -40 45
tCRP
CAS to RAS Precharge Time 5 - - -5 5
tT
Transition Time (Rise and Fall) 2 50 50 502 2 7
Capacitance (VCC = 5V+/-10%, TA = 25C)
Symbol Parameter Note
CI1
CI2
CI/O
Input Capacitance (Address)
Input Capacitance (Clocks)
Output Capacitance (Data-In/Out)
1
1
1, 2
Unit
pF
Max
5
7
7
Min
-
-
-
Note: 1. Capacitance measured with Boonton Meter or effective capacitance measuring method.
2. LCAS and UCAS = VIH to disable DOUT.
AC Characteristics (VCC = 5V+/-10%, TA = 0 ~ +70C, Note 1, 2, 18, 19, 20)
tDZO OE Delay Time from DIN 0 - - -0 0
tDZC CAS Delay Time from DIN 0 - - -0 0
GM71C(S)18163
C/CL-5
OE to DIN Delay Time 13 - - -15 18 5
6
6
tCP CAS Precharge Time 7 - 10 - 13 -
tODD
Test Conditions
Input rise and fall times : 2 ns Output timing reference levels : 0.8V, 2.0V
Input levels : VIL = 0V, VIH = 3V Output load : 1TTL gate + CL (100 pF)
Input timing reference levels : 0.8V, 2.4V (Including scope and jig)
GM71C(S)18163
C/CL-6
GM71C(S)18163
C/CL-7
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF
21
21
22
23