at27bv256 ATMEL Corporation, at27bv256 Datasheet - Page 9

• Manufacturer Part Number: at27bv256
• Description: At27bv256 256k 32k X 8 Unregulated Battery-voltage High-speed Otp Eprom
• Manufacturer: ATMEL Corporation

15. DC Programming Characteristics
TA = 25 ± 5°C, V
16. AC Programming Characteristics
T
Notes:
17. Atmel’s AT27BV256 Integrated Product Identification Code
Note:
0601E–EPROM–12/07
Symbol
I
V
V
V
V
I
I
V
Symbol
t
t
t
t
t
t
t
t
t
t
t
Codes
Manufacturer
Device Type
A
LI
CC2
PP2
AS
OES
DS
AH
DH
DFP
VPS
VCS
PW
OE
PRT
IL
IH
OL
OH
ID
= 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 driven –
3. Program Pulse width tolerance is 100
1. The AT27BV256 has the same Product Identification Code as the AT27C256R and AT27LV256A. They are all programming
see timing diagram.
compatible.
CC
Parameter
Input Load Current
Input Low Level
Input High Level
Output Low Voltage
Output High Voltage
V
V
A9 Product Identification Voltage
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
Programming
CC
PP
PP
CC
PP
must be applied simultaneously or before V
CC
CC
Current
Setup Time
Pulse Rise Time During
Supply Current (Program and Verify)
Setup Time
= 6.5 ± 0.25V, V
= 6.5 ± 0.25V, V
A0
0
1
(2)
PP
PP
(3)
= 13.0 ± 0.25V
= 13.0 ± 0.25V
O7
0
1
(2)
µ
sec ± 5%.
O6
0
0
Test Conditions
Input Rise and Fall Times:
Input Pulse Levels:
Input Timing Reference Level:
Output Timing Reference Level:
PP
and removed simultaneously or after V
O5
I
Test Conditions
V
I
CE = V
0
0
OL
OH
IN
= 2.1 mA
= -400 µA
= V
(10% to 90%) 20 ns
IL
IL
(1)
, V
Pins
O4
0.45V to 2.4V
1
0
IH
0.8V to 2.0V
0.8V to 2.0V
O3
1
1
11.5
Min
-0.6
Min
O2
2.0
2.4
95
50
1
1
2
2
2
0
2
0
2
2
PP
Limits
Limits
.
(1)
O1
1
0
V
CC
Max
12.5
Max
AT27BV256
130
105
150
±10
0.8
0.4
25
25
+ 0.5
O0
0
0
Units
Units
mA
mA
µA
µs
µs
µs
µs
µs
ns
µs
µs
µs
ns
ns
V
V
V
V
V
Data
Hex
8C
1E
9