X28HC256_07 Datasheet, PDF (13/20 Pages) Intersil Corporation – 5V, Byte Alterable EEPROM

X28HC256
Write Cycle Limits
PARAMETER
SYMBOL
MIN
TYP
(Note 6)
MAX
UNIT
Write Cycle Time
t_WC (Note 7)
3
5
ms
Address Setup Time
t_AS
0
ns
Address Hold Time
t_AH
50
ns
Write Setup Time
t_CS
0
ns
Write Hold Time
t_CH
0
ns
CE Pulse Width
t_CW
50
ns
OE HIGH Setup Time
t_OES
0
ns
OE HIGH Hold Time
t_OEH
0
ns
WE Pulse Width
t_WP
50
ns
WE HIGH Recovery (page write only)
t_WPH (Note 8)
50
ns
Data Valid
t_DV
1
µs
Data Setup
t_DS
50
ns
Data Hold
t_DH
0
ns
Delay to Next Write After Polling is True
t_DW (Note 8)
10
µs
Byte Load Cycle
t_BLC
0.15
100
µs
NOTES:
6. Typical values are for T_A = +25°C and nominal supply voltage.
7. t_WC is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum time the device
requires to automatically complete the internal write operation.
8. t_WPH and t_DW are periodically sampled and not 100% tested.
WE Controlled Write Cycle
t_WC
ADDRESS
t_AS
t_AH
t_CS
t_CH
CE
OE
t_OES
t_OEH
t_WP
WE
DATA IN
DATA OUT
DATA VALID
t_DS
t_DH
HIGH Z
13
FN8108.2
May 7, 2007