s29jl064h Meet Spansion Inc., s29jl064h Datasheet - Page 38

• Manufacturer Part Number: s29jl064h
• Description: 64 Megabits 8 M X 8-bits / 4 M X 16-bits
• Manufacturer: Meet Spansion Inc.

11.2
38
RY/BY#: Ready/Busy#
Notes
1. VA = Valid address for programming. During a sector erase operation, a valid address is any sector address within the sector being
2. DQ7 should be rechecked even if DQ5 = 1 because DQ7 may change simultaneously with DQ5.
The RY/BY# is a dedicated, open-drain output pin which 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
If the output is low (Busy), the device is actively erasing or programming. (This includes programming in the
Erase Suspend mode.) If the output is high (Ready), the device is in the read mode, the standby mode, or one
of the banks is in the erase-suspend-read mode.
Table 11.1 on page 42
erased. During chip erase, a valid address is any non-protected sector address.
CC
.
shows the outputs for RY/BY#.
No
Figure 11.1 Data# Polling Algorithm
S29JL064H
Read DQ7–DQ0
Read DQ7–DQ0
DQ7 = Data?
DQ7 = Data?
Addr = VA
Addr = VA
DQ5 = 1?
START
D a t a
FAIL
No
Yes
No
S h e e t
Yes
Yes
PASS
S29JL064H_00_A7 September 19, 2007