Owner manual

Preliminary W49F020
Publication Release Date: October 1999
- 11 - Revision A1
Power-up Timing
PARAMETER SYMBOL TYPICAL UNIT
Power-up to Read Operation T
PU
. READ 100
µS
Power-up to Write Operation TPU. WRITE 5 mS
CAPACITANCE
(V
DD
= 5.0V, T
A
= 25° C, f = 1 MHz)
PARAMETER SYMBOL CONDITIONS MAX. UNIT
I/O Pin Capacitance CI/O VI/O = 0V 12 pf
Input Capacitance CIN VIN = 0V 6 pf
AC CHARACTERISTICS
AC Test Conditions
PARAMETER CONDITIONS
Input Pulse Levels 0V to 3.0V
Input Rise/Fall Time < 5 nS
Input/Output Timing Level 1.5V/1.5V
Output Load 1 TTL Gate and CL = 100 pF for 90nS
C
L = 30 pF for 70nS
AC Test Load and Waveform
+5V
1.8K
1.3K
D
OUT
Ω
Ω
30 pF for 70nS
(Including Jig and
Scope)
Input
3V
0V
Test Point Test Point
1.5V
1.5V
Output
100 pF for 90nS