HY29LV320 Datasheet, PDF (24/44 Pages) Hynix Semiconductor – 32 Mbit (2M x 16) Low Voltage Flash Memory

HY29LV320
Table 13. CFI Mode: Vendor-Specific Extended Query Data Values
Description
Address
Data
Query-unique ASCII string "PRI"
40
0050
41
0052
42
0049
Major version number, ASCII
Minor version number, ASCII
43
0031
44
0030
Address sensitive unlock (0 = required, 1 = not required)
Erase suspend(2 = to read and write)
45
0000
46
0002
Sector protect (N = # of sectors/group)
47
0001
Temporary sector unprotect (1 = supported)
Sector protect/unprotect scheme (4 = Am29LV800A method)
48
0001
49
0004
Simultaneous R/W operation
(xx = number of sectors in Bank 2: 0 = not supported)
4A
0000
Burst mode type (0 = not supported)
Page mode type (0 = not supported)
4B
0000
4C
0000
ACC Supply minimum (11.5V)
4D
00B5
ACC Supply maximum (12.5V)
Top/bottom boot version (BB = Bottom Boot, TB = Top Boot)
4E
00C5
4F
0002 (BB)
0003 (TB)
WRITE OPERATION STATUS
The HY29LV320 provides a number of facilities to
determine the status of a program or erase op-
eration. These are the RY/BY# (Ready/Busy#)
pin and certain bits of a status word which can be
read from the device during the programming and
erase operations. Table 11 summarizes the sta-
tus indications and further detail is provided in the
subsections which follow.
RY/BY# - Ready/Busy#
RY/BY# is an open-drain output pin that indicates
whether a programming or erase Automatic Algo-
rithm is in progress or has completed. A pull-up
resistor to V_CC is required for proper operation. RY/
BY# is valid after the rising edge of the final WE#
pulse in the corresponding command sequence.
If the output is Low (busy), the device is actively
erasing or programming, including programming
while in the Erase Suspend mode. If the output is
High (ready), the device has completed the opera-
tion and is ready to read array data in the normal or
Erase Suspend modes, or it is in the Standby mode.
DQ[7] - Data# Polling
The Data# (“Data Bar”) Polling bit, DQ[7], indicates
to the host system whether an Automatic Algo-
rithm is in progress or completed, or whether the
device is in Erase Suspend mode. Data# Polling
is valid after the rising edge of the final WE# pulse
in the Program or Erase command sequence.
The system must do a read at the program ad-
dress to obtain valid programming status informa-
tion on this bit. While a programming operation is
in progress, the device outputs the complement
of the value programmed to DQ[7]. When the pro-
gramming operation is complete, the device out-
puts the value programmed to DQ[7]. If a pro-
gram operation is attempted within a protected
sector, Data# Polling on DQ[7] is active for ap-
proximately 1 µs, then the device returns to read-
ing array data.
The host must read at an address within any non-
protected sector specified for erasure to obtain
valid erase status information on DQ[7]. During
an erase operation, Data# Polling produces a “0”
on DQ[7]. When the erase operation is complete,
or if the device enters the Erase Suspend mode,
Data# Polling produces a “1” on DQ[7]. If all sec-
tors selected for erasing are protected, Data#
Polling on DQ[7] is active for approximately 100
µs, then the device returns to reading array data.
If at least one selected sector is not protected, the
erase operation erases the unprotected sectors,
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r1.3/May 02