TSC80251G2D
11.7 AC Characteristics - EPROM Programming and Verifying
Definition of symbols
Table 56. EPROM Programming and Verifying Timing Symbol Definitions
Signals
Conditions
A
E
G
Q
S
Address
H
L
High
Enable: mode set on Port 0
Program
Low
V
X
Z
Valid
Data Out
No Longer Valid
Floating
Supply (V
)
PP
Timings
Table 57. EPROM Programming AC timings; V = 4.5 to 5.5 V, T = 0 to 40°C
DD
A
Symbol
Parameter
Min
Max
Unit
T
XTAL1 Period
83.5
48
48
48
48
48
10
10
0
250
ns
OSC
T
Address Setup to PROG# low
T
T
T
T
T
AVGL
GHAX
OSC
OSC
OSC
OSC
T
Address Hold after PROG# low
Data Setup to PROG# low
Data Hold after PROG#
T
DVGL
GHDX
T
T
ENABLE High to V
PP
ELSH
SHGL
GHSL
OSC
T
T
V
V
Setup to PROG# low
µs
PP
PP
Hold after PROG#
µs
ns
µs
T
ENABLE Hold after V
PROG# Width
SLEH
PP
T
90
110
GLGH
Table 58. EPROM Verifying AC timings; V = 4.5 to 5.5 V, V = 2.7 to 5.5 V, T = 0 to 40°C
DD
DD
A
Symbol
Parameter
Min
Max
Unit
T
XTAL1 Period
83.5
250
48
ns
OSC
T
T
Address to Data Valid
Address to Data Invalid
ENABLE low to Data Valid
Data Float after ENABLE
T
AVQV
AXQX
OSC
0
0
0
ns
T
T
48
48
T
T
ELQV
EHQZ
OSC
OSC
Rev. A - May 7, 1999
53
TEMIC [ TEMIC SEMICONDUCTORS ]
