HY29F400A Datasheet, PDF (26/40 Pages) Hynix Semiconductor – 4 Megabit (512Kx8/256Kx16) 5 Volt-only Flash Memory

HY29F400A
AC CHARACTERISTICS
Word/Byte Configuration (BYTE#)
Parameter
JEDEC Std
Description
t_ELFL CE# to BYTE# Switching Low
t_ELFH CE# to BYTE# Switching High
t_FLQZ BYTE# Switching Low to Output High-Z
t_FHQV BYTE# Switching High to Output Active
Speed Option
Unit
- 50 - 55 - 70 - 90
Max
5
ns
Max
5
ns
Max 15 15 20 20 ns
Min 50 55 70 90 ns
CE#
OE#
BYTE#
BYTE#
switching
from word to
DQ[14:0]
t_ELFL
byte mode
DQ[15]/A-1
Data Output DQ[14:0]
Data Output DQ[7:0]
Output DQ[15]
t_FLQZ
Address Input A-1
BYTE#
switching
from byte to
word mode
BYTE#
DQ[14:0]
DQ[15]/A-1
t_ELFH
Data Output DQ[7:0]
Address Input A-1
t_FHQV
Data Output DQ[14:0]
Data Output DQ[15]
Figure 15. BYTE# Timings for Read Operations
CE#
WE#
Falling edge of the last WE# signal
BYTE#
t_SET (t_AS)
t_HOLD (t_AH)
Note: Refer to the Program/Erase Operations table for t and t specifications.
AS
AH
Figure 16. BYTE# Timings for Write Operations
26
Rev. 1.0/Jan. 02