Datasheet

678
Table 21.4 AC Characteristics (V
CC
= 6.0 V ± 0.25 V, V
PP
= 12.5 V ± 0.3 V, V
SS
= 0 V, Ta =
25°C ± 5°C)
Item Symbol Min Typ Max Unit
Measurement
Conditions
Address setup time t
AS
2 — — µs Figure 21.6
*
1
OE setup time t
OES
2——µs
Data setup time t
DS
2——µs
Address hold time t
AH
0——µs
Data hold time t
DH
2——µs
Data output disable time t
DF
*
2
— — 130 ns
Vpp setup time t
VPS
2——µs
PGM pulse width during initial programming t
PW
0.19 0.20 0.21 ms
PGM pulse width during over-programming t
OPW
*
3
0.19 — 5.25 ms
Vcc setup time t
VCS
2——µs
CE setup time t
CES
2——µs
Data output delay time t
OE
0 — 150 ns
Notes: *1 Input pulse level: 0.45 V to 2.4 V; input rise, fall times ≤ 20 ns; input timing reference
levels: 0.8 V, 2.0 V; output timing reference levels: 0.8 V, 2.0 V.
*2t
DF
is defined as when the output becomes open state and referencing the output level is
no longer possible.
*3t
OPW
is defined by the values noted in the flowchart (figure 21.6).