参数资料
型号: S29AL008D70MAI011
厂商: SPANSION LLC
元件分类: PROM
英文描述: 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
中文描述: 512K X 16 FLASH 3V PROM, 70 ns, PDSO44
封装: MO-180AAA, SOP-44
文件页数: 21/52页
文件大小: 2004K
代理商: S29AL008D70MAI011
28
S29AL008D
S29AL008D_00_A11 February 27, 2009
Da ta
Sh e e t
Figure 9.1 Data# Polling Algorithm
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.
9.2
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 VCC.
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.
Figure 15.5 on page 39 and Figure 15.6 on page 40 shows RY/BY# for read, reset, program, and erase
operations, respectively.
9.3
DQ6: Toggle Bit I
Toggle Bit I on DQ6 indicates whether an Embedded Program or Erase algorithm is in progress or complete,
or whether the device entered the Erase Suspend mode. Toggle Bit I may be read at any address, and is
valid after the rising edge of the final WE# pulse in the command sequence (prior to the program or erase
operation), and during the sector erase time-out.
DQ7 = Data?
Yes
No
DQ5 = 1?
No
Yes
FAIL
PASS
Read DQ7–DQ0
Addr = VA
Read DQ7–DQ0
Addr = VA
DQ7 = Data?
START
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