A d v a n c e I n f o r m a t i o n
Figure 18, on page 44 shows the outputs for Data# Polling on DQ7. Figure 7, on page 43 shows
the Data# Polling algorithm.
START
Read DQ7–DQ0
Addr = VA
Yes
DQ7 = Data?
No
No
DQ5 = 1?
Yes
Read DQ7–DQ0
Addr = VA
Yes
DQ7 = Data?
No
PASS
FAIL
Notes:
1. VA = Valid address for programming. During a sector
erase operation, a valid address is an address within
any sector selected for erasure. During chip erase, a
valid address is any non-protected sector address.
2. DQ7 should be rechecked even if DQ5 = 1 because
DQ7 may change simultaneously with DQ5.
Figure 6. Data# Polling Algorithm
RY/BY#: Ready/Busy#
The RY/BY# is a dedicated, open-drain output pin that indicates whether an Embedded Algorithm
is in progress or complete. The RY/BY# status is valid after the rising edge of the final WE# pulse
in the command sequence. Since RY/BY# is an open-drain output, several RY/BY# pins can be
tied together in parallel with a pull-up resistor to V
.
CC
40
S29AL032D
S29AL032D_00_A3 June 13, 2005
SPANSION [ SPANSION ]
