TSC87251G1A
11.5. AC Characteristics – EPROM Programming and Verifying
Definition of symbols
Table 50. EPROM Programming & Verifying Timing Symbol Definitions
Signals
Conditions
A
E
Address
H
L
High
Enable: mode set on Port 0
Data Out
Low
Q
V
X
Z
Valid
No Longer Valid
Floating
Timings
Table 51. EPROM Programming and Verifying AC timings; V = 4.5 to 5.5 V, T = 0 to 40°C
DD
A
Symbol
Parameter
Min
Max
Unit
T
OSC
XTAL1 Frequency
83.5
250
ns
T
Address Setup to PROG# low
Address Hold after PROG# low
Data Setup to PROG# low
Data Hold after PROG#
ENABLE High to VPP
VPP Setup to PROG# low
VPP Hold after PROG#
ENABLE Hold after VPP
PROG# Width
48×T
AVGL
OSC
OSC
OSC
OSC
OSC
T
48×T
48×T
48×T
48×T
GHAX
DVGL
GHDX
EHSH
SHGL
GHSL
SLEL
T
T
T
T
T
T
T
10
10
0
ms
ms
90
110
ms
GLGH
T
AVQV
Address to Data Valid
48×T
OSC
T
Address to Data Invalid
ENABLE low to Data Valid
Data Float after ENABLE
0
0
ns
AXQX
T
ELQV
EHQZ
48×T
48×T
OSC
T
OSC
45
Rev. A – September 21, 1998
TEMIC [ TEMIC SEMICONDUCTORS ]
