at27c256r-70ti ATMEL Corporation, at27c256r-70ti Datasheet - Page 8

• Manufacturer Part Number: at27c256r-70ti
• Description: 256k 32k X 8 Otp Eprom
• Manufacturer: ATMEL Corporation

16. AC Programming Characteristics
T
Notes:
17. Atmel’s AT27C256R Integrated Product Identification Code
8
A
Symbol
t
t
t
t
t
t
t
t
t
t
t
Codes
Manufacturer
Device Type
AS
OES
DS
AH
DH
DFP
VPS
VCS
PW
OE
PRT
= 25 ± 5°C, V
1. V
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer
3. Program Pulse width tolerance is 100 µsec ± 5%.
AT27C256R
driven – see timing diagram.
CC
Parameter
Address Setup Time
OE Setup Time
Data Setup Time
Address Hold Time
Data Hold Time
OE High to Output Float Delay
V
V
CE Program Pulse Width
Data Valid from OE
V
PP
CC
PP
must be applied simultaneously or before V
CC
Setup Time
Pulse Rise Time During Programming
Setup Time
= 6.5 ± 0.25V, V
A0
0
1
(2)
PP
(3)
= 13.0 ± 0.25V
O7
0
1
(2)
O6
0
0
Input Rise and Fall Times
Input Pulse Levels
Input Timing Reference Level
Output Timing Reference Level
PP
and removed simultaneously or after V
O5
0
0
Test Conditions
Pins
O4
(10% to 90%) 20 ns
1
0
0.45V to 2.4V
0.8V to 2.0V
0.8V to 2.0V
O3
(1)
1
1
O2
1
1
Min
PP
95
50
2
2
2
0
2
0
2
2
.
O1
Limits
1
0
Max
130
105
150
O0
0
0
0014M–EPROM–12/07
Units
Data
Hex
µs
µs
µs
µs
ns
µs
µs
µs
ns
ns
1E
8C
µs