CAT28F020L12 ON Semiconductor, CAT28F020L12 Datasheet - Page 10

• Manufacturer Part Number: CAT28F020L12
• Description: IC FLASH 2MBIT 120NS 32DIP
• Manufacturer: ON Semiconductor

Specifications of CAT28F020L12

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 2M (256K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-DIP (0.600", 15.24mm)
• Data Bus Width: 8 bit
• Architecture: Non Sectored
• Interface Type: Parallel
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Current: 30 mA
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CAT28F020L-12; CAT28F020L-12

CAT28F020
Note:
(1) The algorithm MUST BE FOLLOWED to ensure proper and reliable operation of the device.
Doc. No. MD-1029, Rev. F
Figure 5. Chip Erase Algorithm
INCREMENT
ADDRESS
NO
VERIFY COMMAND
SETUP COMMAND
START ERASURE
TIME OUT 10ms
PROGRAM ALL
BYTES TO 00H
FROM DEVICE
WRITE ERASE
WRITE ERASE
WRITE ERASE
TIME OUT 6 s
APPLY V PPH
WRITE READ
COMPLETED
APPLY V PPL
PLSCNT = 0
READ DATA
ADDRESS?
COMMAND
COMMAND
INITIALIZE
ADDRESS
INITIALIZE
ERASURE
DATA =
FFH?
LAST
YES
YES
(1)
NO
INC PLSCNT
APPLY V PPL
= 3000 ?
=1000 ?
ERROR
ERASE
YES
NO
10
OPERATION COMMAND
STANDBY
STANDBY
STANDBY
WRITE
WRITE
WRITE
WRITE
READ
BUS
VERIFY
ERASE
ERASE
ERASE
READ
Characteristics subject to change without notice
ADDRESS = BYTE TO VERIFY
INCREMENT PULSE COUNT
STOPS ERASE OPERATION
COMPARE OUTPUT TO FF
PLSCNT = PULSE COUNT
RESETS THE REGISTER
(OR V PP HARDWIRED)
FOR READ OPERATION
(OR V PP HARDWIRED)
V PP RAMPS TO V PPH
V PP RAMPS TO V PPL
PROGRAMMED TO 00
INITIALIZE ADDRESS
ALL BYTES SHALL BE
NEEDS 10ms PULSE,
BEFORE AN ERASE
© 2009 SCILLC. All rights reserved.
VERIFY ERASURE
ACTUAL ERASE
READ BYTE TO
COMMENTS
DATA=20H
OPERATION
DATA = 20H;
DATA = 20H
DATA = 20H
DATA = 00H
DATA = 20H
WAIT
WAIT
A0H
5108 FHD F10