HY29F400 Hynix Semiconductor, HY29F400 Datasheet - Page 30

• Manufacturer Part Number: HY29F400
• Description: 4 Megabit (512Kx8/256Kx16) 5 Volt-only Flash Memory
• Manufacturer: Hynix Semiconductor

HY29F400
AC CHARACTERISTICS
Notes:
1. VA = Valid Address for reading Data# Polling status data (see Write Operation Status section).
2. Illustration shows first status cycle after command sequence, last status read cycle and array data read cycle.
Notes:
1. VA = Valid Address for reading Toggle Bits (DQ2, DQ6) status data (see Write Operation Status section).
2. Illustration shows first two status read cycles after command sequence, last status read cycle and array data read cycle.
30
Addresses
Addresses
DQ[6], [2]
RY/BY#
RY/BY#
DQ[6:0]
DQ[7]
W E #
O E #
W E #
C E #
O E #
C E #
t
t
Figure 20. Toggle Polling Timings (During Automatic Algorithms)
t
B U S Y
C H
Figure 19. Data# Polling Timings (During Automatic Algorithms)
B U S Y
t
O E H
t
t
O E H
C H
t
t
C E
O E
t
C E
t
O E
t
A C C
V A
V A
t
R C
t
R C
t
A C C
Valid Status
C o m p l e m e n t
Status Data
(first read)
t
t
O H
O H
t
t
D F
D F
V A
(second read)
Valid Status
V A
C o m p l e m e n t
Status Data
True
Data
(stops toggling)
Valid Status
V A
V A
Valid Data
Valid Data
V A
Valid Data
Rev. 5.2/May 01