BRIGHT
Microelectronics
Inc.
Preliminary BM29F400T/BM29F400B
Switching Waveforms, continued
Data Polling
PA
PA
5555H
Address
CE
t
WC
t
AH
t
AS
t
GHWL
OE
WP
t
t
WHWH1
WE
t
WPH
CS
t
t
D
OUT
Data
A0H
PD
DQ7
D
DS
t
5.0V
Vcc
GND
Figure 19. Alternate
Controlled Program Operation Timings
CE
Notes:
1. PA is address of the memory location to be programmed.
2. PD is data to be programmed at BYTE address.
3. /DQ7 is the output of the complement of the data written to the device.
4. D is the output of the data written to the device.
OUT
5. Figure indicates last two bus cycles of four bus cycle sequence.
6. These waveforms are for the x16 mode.
A Winbond Company
Publication Release Date: May 1999
Revision A1
- 33 -
WINBOND [ WINBOND ]
