AT28BV256_14 Datasheet, PDF (10/17 Pages) ATMEL Corporation – Automatic Page Write Operation

16. Page Mode Characteristics
Symbol
Parameter
Min
t_WC
Write Cycle Time
t_AS
Address Set-up Time
0
t_AH
Address Hold Time
50
t_DS
Data Set-up Time
50
t_DH
Data Hold Time
0
t_WP
Write Pulse Width
200
t_BLC
Byte Load Cycle Time
t_WPH
Write Pulse Width High
100
17. Programming Algorithm^(1)(2)(3)
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA A0
TO
ADDRESS 5555
WRITES ENABLED⁽²⁾
LOAD DATA XX
TO
ANY ADDRESS⁽³⁾
Notes:
LOAD LAST BYTE
TO
LAST ADDRESS⁽³⁾
ENTER DATA
PROTECT STATE
1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex).
2. Data protect state will be re-activated at the end of program cycle.
3. 1 to 64 bytes of data are loaded.
18. Software Protected Program Cycle Waveforms^(1)(2)(3)
Max
10
150
Units
ms
ns
ns
ns
ns
ns
µs
ns
t_WP
t_WPH
t_AS
t_AH
t_DH
t_BLC
t_DS
Notes:
t_WC
1. A0 - A14 must conform to the addressing sequence for the first three bytes as shown above.
2. A6 through A14 must specify the same page address during each high to low transition of WE (or CE) after the software
code has been entered.
3. OE must be high only when WE and CE are both low.
10 AT28BV256
0273K–PEEPR–2/09