STA369BWS STMicroelectronics, STA369BWS Datasheet - Page 43

• Manufacturer Part Number: STA369BWS
• Description: Multimedia Misc 2.1-channel 40-watt High-EFF Dig Audio
• Manufacturer: STMicroelectronics

Specifications of STA369BWS

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.2
January 19, 2007 S29AL032D_00_A9
RY/BY#: Ready/Busy#
Notes
1. VA = Valid address for programming. During a sector erase operation, a valid address is an address within any sector selected for
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 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
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 ready to read array data (including during
the Erase Suspend mode), or is in the standby mode.
Table 12.1 on page 44
50,
operations, respectively.
erasure. During chip erase, a valid address is any non-protected sector address.
Figure 17.5 on page 53
CC
.
shows the outputs for RY/BY#. Figures
D a t a
and
Figure 17.6 on page 53
S h e e t
Figure 12.1 Data# Polling Algorithm
No
S29AL032D
Read DQ7–DQ0
Read DQ7–DQ0
DQ7 = Data?
DQ7 = Data?
Addr = VA
Addr = VA
DQ5 = 1?
START
FAIL
No
Yes
No
shows RY/BY# for read, reset, program, and erase
Yes
Yes
Figure 17.1 on page
PASS
49,
Figure 17.2 on page
41