M27C64A-30F6X STMicroelectronics, M27C64A-30F6X Datasheet - Page 9

• Manufacturer Part Number: M27C64A-30F6X
• Description: 64 Kbit 8Kb x 8 UV EPROM and OTP EPROM
• Manufacturer: STMicroelectronics

Table 9. Programming Mode DC Characteristics
(T
Note: 1. V
Table 10. Programming Mode AC Characteristics
(T
Note: 1. V
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C800 are in the ’1’
state. Data is introduced by selectively program-
ming ’0’s into the desired bit locations. Although
only ’0’s will be programmed, both ’1’s and ’0’s can
be present in the data word. The only way to
Symbol
A
A
t
Symbol
GHQZ
t
t
t
VCHAV
t
t
t
t
V
t
VPHAV
t
= 25 C; V
V
= 25 C; V
EHQX
GHAX
I
V
V
QVEL
ELEH
QXGL
GLQV
I
V
AVEL
I
CC
PP
OH
2. Sampled only, not 100% tested.
OL
LI
IH
ID
IL
(2)
CC
CC
must be applied simultaneously with or before V
must be applied simultaneously with or before V
Input Leakage Current
Supply Current
Program Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage TTL
A9 Voltage
CC
CC
t
t
t
t
t
Alt
t
t
VPS
VCS
t
OES
t
DFP
t
PW
AS
DS
DH
OE
AH
= 6.25V
= 6.25V
Address Valid to Chip Enable Low
Input Valid to Chip Enable Low
V
V
Chip Enable Program Pulse Width
Chip Enable High to Input Transition
Input Transition to Output Enable Low
Output Enable Low to Output Valid
Output Enable High to Output Hi-Z
Output Enable High to Address
Transition
Parameter
PP
CC
High to Address Valid
High to Address Valid
0.25V; V
0.25V; V
Parameter
PP
PP
= 12.5V
= 12.5V
PP
PP
and removed simultaneously or after V
and removed simultaneously or after V
Test Conditio n
0.25V)
0.25V)
0
I
OH
I
(1)
OL
(1)
E = V
V
= –2.5mA
= 2.1mA
change a ’0’ to a ’1’ is by die exposition to ultravio-
let light (UVEPROM). The M27C800 is in the pro-
gramming mode when V
at V
grammed is applied to 16 bits in parallel to the data
output pins. The levels required for the address
and data inputs are TTL. V
6.25V
IN
IL
IH
V
CC
Test Condition
and E is pulsed to V
0.25V.
–0.3
11.5
Min
2.4
3.5
PP
PP
PP
.
.
Min
45
2
2
2
2
2
2
0
0
IL
input is at 12.5V, G is
V
CC
. The data to be pro-
CC
Max
12.5
0.8
0.4
50
50
is specified to be
+ 0.5
1
Max
120
130
55
M27C800
Unit
mA
mA
V
V
V
V
V
A
Unit
ns
ns
ns
9/17
s
s
s
s
s
s
s