HY29F400A Hynix Semiconductor, HY29F400A Datasheet - Page 29

• Manufacturer Part Number: HY29F400A
• Description: 4 Megabit (512Kx8/256Kx16) 5 Volt-only Flash Memory
• Manufacturer: Hynix Semiconductor

Addresses
AC CHARACTERISTICS
Notes:
1. SA =Sector Address (for sector erase), VA = Valid Address for reading status data (see Write Operation Status section),
2. Commands shown are for Word mode operation.
3. V
Rev. 1.0/Jan. 02
RY/BY#
D
CC
OUT
WE#
Data
OE#
CE#
shown only to illustrate t
V
is the true data at the read address.(0xFF after an erase operation).
CC
t
VCS
Erase Command Sequence (last two cycles)
t
CS
0x2AA
t
t
DS
WC
t
t
Figure 18. Sector/Chip Erase Operation Timings
GHWL
WP
0x55
VCS
measurement references. It cannot occur as shown during a valid command sequence.
t
CH
t
WPH
t
t
DH
AS
SA
t
BUSY
t
0x30
AH
Address = 0x555
for chip erase
Data = 0x10
for chip erase
t
WHWH2
t
WHWH3
VA
Read Status Data (last two cycles)
or
Status
VA
D
OUT
t
HY29F400A
RB
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