參數(shù)資料
型號(hào)： S29AL004D90SFI013
廠商： SPANSION LLC
元件分類： PROM
英文描述： 256K X 16 FLASH 3V PROM, 90 ns, PDSO48
封裝： LEAD FREE, MO-180AA, SO-44
文件頁(yè)數(shù)： 19/53頁(yè)
文件大?。?/td> 1402K
代理商： S29AL004D90SFI013
26
S29AL004D
S29AL004D_00_A0 November 12, 2004
RY/BY#: Ready/Busy#
The RY/BY# is a dedicated, open-drain output pin that indicates whether an Em-
bedded 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.
DQ7 = Data?
Yes
No
DQ5 = 1?
No
Yes
FAIL
PASS
Read DQ7–DQ0
Addr = VA
Read DQ7–DQ0
Addr = VA
DQ7 = Data?
START
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 5. Data# Polling Algorithm
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