X28HC64J-90 Intersil, X28HC64J-90 Datasheet - Page 13

• Manufacturer Part Number: X28HC64J-90
• Description: IC EEPROM 64KBIT 90NS 32PLCC
• Manufacturer: Intersil

Specifications of X28HC64J-90

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

CE Controlled Write Cycle
Page Write Cycle
NOTES:
10. The timings shown above are unique to page write operations. Individual byte load operations within the page write must conform to either the
9. Between successive byte writes within a page write operation, OE can be strobed LOW: e.g. this can be done with CE and WE HIGH to fetch
DATA OUT
ADDRESS
data from another memory device within the system for the next write; or with WE HIGH and CE LOW effectively performing a polling operation.
CE or WE controlled write cycle timing.
(NOTE 10)
DATA IN
(NOTE 9)
Address
WE
OE
CE
WE
OE
CE
I/O
*For each successive write within the page write operation, A
writes to an unknown address could occur.
t
WP
t
OES
13
t
AS
Byte 0
t
CS
t
DV
t
WPH
Byte 1
t
AH
t
BLC
t
CW
X28HC64
HIGH Z
Byte 2
t
DS
DATA VALID
t
OEH
6
Byte n
–A
t
WC
12
t
t
CH
DH
should be the same or
Byte n+1
Last Byte
Byte n+2
t
WC
August 28, 2009
FN8109.2