CAT28F001 CATALYST [Catalyst Semiconductor], CAT28F001 Datasheet - Page 16

• Manufacturer Part Number: CAT28F001
• Description: 1 Megabit CMOS Boot Block Flash Memory
• Manufacturer: CATALYST [Catalyst Semiconductor]

CAT28F001
Figure 8. Alternate Boot Block Access Method Using OE
Figure 9. Alternate AC Waveform for Write Operations
Doc. No. 25071-00 2/98 F-1
ADDRESSES
DATA
WE
DATA I/O
OE
V PP (V)
WE (W)
RP (P)
OE (a)
CE (E)
V HH
V PPH
V PPL
V IH
V IL
V IH
V IH
V HH
V IL
V IL
6.5V
V IH
V IH
V IH
V IH
V IH
V IH
V IH
V IL
V IL
V IL
V IL
V IL
V IL
V IL
V CC POWER-UP
& STANDBY
HIGH Z
ERASE SETUP COMMAND
t WLEL
WRITE PROGRAM OR
t PHEL
ERASE SETUP COMMAND
t GHHWL
WRITE PROGRAM OR
t DVEH
t AVAV
A IN
D IN
t ELEH
D IN
t EHWH
t EHDX
t EHEL
VALID ADDRESS & DATA (PROGRAM)
OR ERASE CONFIRM COMMAND
VALID ADDRESS AND DATA (PROGRAM)
OR ERASE CONFIRM COMMAND
t AVEH
WRITE
A IN
D IN
t PHHEH
t VPEH
WRITE
D IN
16
t EHAX
AUTOMATED PROGRAM
OR ERASE DELAY
t EHQV 1, 2, 3, 4
t WHGH
t EHGL
AUTOMATED PROGRAM
OR ERASE DELAY
REGISTER DATA
READ STATUS
VALID
SRD
t QVPH
t QVVL
WRITE READ ARRAY
REGISTER DATA
COMMAND
READ STATUS
SR DATA
VALID
D IN