AMD27C64 Datasheet, PDF (9/11 Pages) Advanced Micro Devices – 64 Kilobit (8,192 x 8-Bit) CMOS EPROM

AMD
CAPACITANCE
Parameter
Symbol Parameter Description
Test
Conditions
CDV028 PL 032 PD 028
Typ Max Typ Max Typ Max Unit
CIN
Input Capacitance
VIN = 0
8 10 6 10 5 10 pF
COUT
Output Capacitance
VOUT = 0
Notes:
1. This parameter is only sampled and not 100% tested.
2. TA = +25°C, f = 1 MHz.
11 14 8 12 8 10 pF
SWITCHING CHARACTERISTICS over operating range unless otherwise specified
(Notes 1, 3 and 4)
Parameter
Symbols
Parameter
JEDEC Standard Description
tAVQV
tACC Address to
Output Delay
tELQV
tCE Chip Enable to
Output Delay
tGLQV
tOE Output Enable to
Output Delay
Am27C64
Test
Conditions
-45 -55 -70 -90 -120 -150 -200 -255 Unit
CE = OE = Min – – – – – – – –
VIL
Max 45 55 70 90 120 150 200 250 ns
OE = VIL Min –
–
–
–
–
–
–
–
Max 45 55 70 90 120 150 200 250 ns
CE = VIL Min –
–
–
–
–
–
–
–
Max 30 35 40 40 50 50 50 50 ns
tEHQZ
tGHQZ
tDF
(Note 2)
Chip Enable HIGH or
Output Enable HIGH,
whichever comes
first, to Output Float
Min – – – – – – – –
Max 25 25 25 25 30 30 30 30 ns
tAXQX
Notes:
tOH Output Hold from
Addresses, CE, or OE,
whichever occurred first
Min 0 0 0 0 0 0 0 0
Max – – – – – – – – ns
1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.
2. This parameter is only sampled and not 100% tested.
3. Caution: The Am27C64 must not be removed from (or inserted into) a socket or board when VPP or VCC is applied.
4. For the -45, -55 and -70:
Output Load: 1 TTL gate and CL = 30 pF
Input Rise and Fall Times: 20 ns
Input Pulse Levels: 0 V to 3 V
Timing Measurement Reference Level: 1.5 V for inputs and outputs
For all other versions:
Output Load: 1 TTL gate and CL = 100 pF
Input Rise and Fall Times: 20 ns
Input Pulse Levels: 0.45 V to 2.4 V
Timing Measurement Reference Level: 0.8 V and 2 V inputs and outputs
2-18
Am27C64