MX29F040CQI-55 [Macronix]

4M-BIT [512K x 8] CMOS SINGLE VOLTAGE 5V ONLY EQUAL SECTOR FLASH MEMORY; 4M- BIT [ 512K ×8 ] CMOS单电压5V只相当于行业FLASH MEMORY
MX29F040CQI-55
型号: MX29F040CQI-55
厂家: MACRONIX INTERNATIONAL    MACRONIX INTERNATIONAL
描述:

4M-BIT [512K x 8] CMOS SINGLE VOLTAGE 5V ONLY EQUAL SECTOR FLASH MEMORY
4M- BIT [ 512K ×8 ] CMOS单电压5V只相当于行业FLASH MEMORY

文件: 总38页 (文件大小:581K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
MX29F040C  
4M-BIT [512K x 8] CMOS SINGLE VOLTAGE 5V ONLY  
EQUAL SECTOR FLASH MEMORY  
FEATURES  
then resumes the erase  
• Status Reply  
• 524,288 x 8 only  
• Single power supply operation  
- 5.0V only operation for read, erase and program op-  
eration  
- Data# Polling & Toggle bit for detection of program  
and erase cycle completion  
• Sector protect/chip unprotect for 5V only system  
• Sector protection  
• Fast access time: 55/70/90ns  
• CompatiblewithMX29F040device  
• Low power consumption  
- 30mA maximum active current(5MHz)  
- 1uA typical standby current  
• Command register architecture  
- Byte Programming (9us typical)  
- Sector Erase  
8 equal sectors of 64K-Byte each  
• Auto Erase (chip & sector) and Auto Program  
- Automatically erase any combination of sectors with  
Erase Suspend capability  
- Hardware method to disable any combination of sec-  
tors from program or erase operations  
-Temporarysectorunprotectallowscodechangesin  
previously locked sectors  
• 100,000minimumerase/programcycles  
• 100,000 minimum erase/program cycles  
• Latch-up protected to 100mA from -1V toVCC+1V  
• Low VCC write inhibit is equal to or less than 3.2V  
• Package type:  
- 32-pin PLCC, TSOP or PDIP  
- All Pb-free devices are RoHS Compliant  
• Compatibility with JEDEC standard  
- Pinout and software compatible with single-power  
supply Flash  
- Automatically program and verify data at specified  
address  
• Erase suspend/Erase Resume  
- Suspends an erase operation to read data from, or  
program data to, another sector that is not being erased,  
• 20 years data retention  
GENERAL DESCRIPTION  
The MX29F040C is a 4-mega bit Flash memory orga-  
nized as 512K bytes of 8 bits. MXIC's Flash memories  
offer the most cost-effective and reliable read/write non-  
volatile random access memory. The MX29F040C is  
packaged in 32-pin PLCC, TSOP, PDIP. It is designed  
to be reprogrammed and erased in system or in standard  
EPROM programmers.  
erase and programming, while maintaining maximum  
EPROM compatibility.  
MXIC Flash technology reliably stores memory con-  
tents even after 100,000 erase and program cycles.  
The MXIC cell is designed to optimize the erase  
and program mechanisms. In addition, the combi-  
nation of advanced tunnel oxide processing and low  
internal electric fields for erase and programming  
operations produces reliable cycling. The  
MX29F040C uses a 5.0V±10% VCC supply to per-  
form the High Reliability Erase and auto Program/  
Erase algorithms.  
The standard MX29F040C offers access time as fast as  
55ns, allowing operation of high-speed microprocessors  
without wait states. To eliminate bus contention, the  
MX29F040C has separate chip enable (CE#) and output  
enable (OE#) controls.  
MXIC's Flash memories augment EPROM functionality  
with in-circuit electrical erasure and programming. The  
MX29F040C uses a command register to manage this  
functionality. The command register allows for 100%TTL  
level control inputs and fixed power supply levels during  
The highest degree of latch-up protection is  
achieved with MXIC's proprietary non-epi process.  
Latch-up protection is proved for stresses up to 100  
milliamps on address and data pin from -1V to VCC  
+ 1V.  
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MX29F040C  
PIN CONFIGURATIONS  
32 PDIP  
32 PLCC  
VCC  
WE#  
A17  
A14  
A13  
A8  
A18  
A16  
A15  
A12  
A7  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
1
2
3
4
1
32  
30  
29  
4
5
9
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
Q0  
A14  
A13  
A8  
5
A6  
6
A9  
A5  
7
A11  
OE#  
A10  
CE#  
Q7  
A4  
8
A9  
A3  
9
MX29F040C  
25  
A11  
OE#  
A10  
CE#  
Q7  
A2  
10  
11  
12  
13  
14  
15  
16  
A1  
A0  
Q6  
Q0  
Q5  
Q1  
Q4  
Q2  
13  
14  
21  
17  
20  
Q3  
GND  
32TSOP (StandardType) (8mm x 20mm)  
A11  
A9  
1
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
OE#  
A10  
CE#  
Q7  
2
A8  
3
A13  
A14  
A17  
WE#  
VCC  
A18  
A16  
A15  
A12  
A7  
4
5
Q6  
6
Q5  
7
Q4  
8
Q3  
MX29F040C  
9
GND  
Q2  
10  
11  
12  
13  
14  
15  
16  
Q1  
Q0  
A0  
A6  
A1  
A5  
A2  
A4  
A3  
SECTOR STRUCTURE  
MX29F040C SECTOR ADDRESS TABLE  
PIN DESCRIPTION  
SYMBOL  
A0~A18  
Q0~Q7  
CE#  
PIN NAME  
Sector  
SA0  
SA1  
SA2  
SA3  
SA4  
SA5  
SA6  
SA7  
A18  
0
A17  
0
A16 Address Range  
Address Input  
0
1
0
1
0
1
0
1
00000h-0FFFFh  
10000h-1FFFFh  
20000h-2FFFFh  
30000h-3FFFFh  
40000h-4FFFFh  
50000h-5FFFFh  
60000h-6FFFFh  
70000h-7FFFFh  
Data Input/Output  
Chip Enable Input  
Write Enable Input  
Output Enable Input  
Ground Pin  
0
0
0
1
WE#  
0
1
OE#  
1
0
GND  
1
0
VCC  
+5.0V single power supply  
1
1
1
1
Note: All sectors are 64 Kbytes in size.  
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MX29F040C  
BLOCK DIAGRAM  
WRITE  
STATE  
CONTROL  
INPUT  
PROGRAM/ERASE  
HIGH VOLTAGE  
CE#  
OE#  
WE#  
MACHINE  
(WSM)  
LOGIC  
STATE  
FLASH  
ARRAY  
ADDRESS  
LATCH  
REGISTER  
ARRAY  
A0-A18  
AND  
SOURCE  
HV  
BUFFER  
Y-PASS GATE  
COMMAND  
DATA  
DECODER  
PGM  
SENSE  
DATA  
HV  
AMPLIFIER  
COMMAND  
DATA LATCH  
PROGRAM  
DATA LATCH  
Q0-Q7  
I/O BUFFER  
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MX29F040C  
the device automatically times the erase pulse width,  
provides the erase verification, and counts the number of  
sequences. A status bit toggling between consecutive  
read cycles provides feedback to the user as to the sta-  
tus of the programming operation.  
AUTOMATIC PROGRAMMING  
The MX29F040C is byte programmable using the Auto-  
matic Programming algorithm. The Automatic Program-  
ming algorithm makes the external system do not need  
to have time out sequence nor to verify the data pro-  
grammed. The typical chip programming time at room  
temperature of the MX29F040C is less than 4.5 sec-  
onds.  
Register contents serve as inputs to an internal state-  
machine which controls the erase and programming cir-  
cuitry. During write cycles, the command register inter-  
nally latches address and data needed for the program-  
ming and erase operations. During a system write cycle,  
addresses are latched on the falling edge of WE# or  
CE#, whichever happens later, and data are latched on  
the rising edge of WE# or CE#, whichever happens first.  
AUTOMATIC CHIP ERASE  
The entire chip is bulk erased using 10 ms erase pulses  
according to MXIC's Automatic Chip Erase algorithm.  
Typical erasure at room temperature is accomplished in  
less than 4 second. The Automatic Erase algorithm au-  
tomatically programs the entire array prior to electrical  
erase. The timing and verification of electrical erase are  
controlled internally within the device.  
MXIC's Flash technology combines years of EPROM  
experience to produce the highest levels of quality, relia-  
bility, and cost effectiveness. The MX29F040C electri-  
cally erases all bits simultaneously using Fowler-Nord-  
heim tunneling. The bytes are programmed by using the  
EPROM programming mechanism of hot electron injec-  
tion.  
AUTOMATIC SECTOR ERASE  
During a program cycle, the state-machine will control  
the program sequences and command register will not  
respond to any command set. During a Sector Erase  
cycle, the command register will only respond to Erase  
Suspend command.After Erase Suspend is completed,  
the device stays in read mode. After the state machine  
has completed its task, it will allow the command regis-  
ter to respond to its full command set.  
The MX29F040C is sector(s) erasable using MXIC's  
Auto Sector Erase algorithm. Sector erase modes  
allow sectors of the array to be erased in one erase  
cycle. The Automatic Sector Erase algorithm auto-  
matically programs the specified sector(s) prior to  
electrical erase. The timing and verification of electri-  
cal erase are controlled internally within the device.  
AUTOMATIC PROGRAMMING ALGORITHM  
MXIC's Automatic Programming algorithm require the user  
to only write program set-up commands (including 2 un-  
lock write cycle and A0H) and a program command (pro-  
gram data and address). The device automatically times  
the programming pulse width, provides the program veri-  
fication, and counts the number of sequences. A status  
bit similar to Data# Polling and a status bit toggling be-  
tween consecutive read cycles, provide feedback to the  
user as to the status of the programming operation.  
AUTOMATIC ERASE ALGORITHM  
MXIC's Automatic Erase algorithm requires the user to  
write commands to the command register using stand-  
ard microprocessor write timings. The device will auto-  
matically pre-program and verify the entire array. Then  
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MX29F040C  
TABLE 1. SOFTWARE COMMAND DEFINITIONS  
First Bus  
Cycle  
Second Bus Third Bus  
Cycle Cycle  
Fourth Bus  
Cycle  
Fifth Bus  
Cycle  
Sixth Bus  
Cycle  
Command  
Bus  
Cycle Addr  
Data Addr Data Addr Data Addr Data Addr Data Addr Data  
XXXH F0H  
RA RD  
555H AAH 2AAH 55H 555H 90H ADI  
555H AAH 2AAH 55H 555H 90H (SA)X 00H  
Reset  
1
1
4
4
Read  
Read Silicon ID  
Sector Protect Verify  
DDI  
02  
01H  
PD  
Program  
4
6
6
1
1
6
555H AAH 2AAH 55H 555H A0H PA  
Chip Erase  
555H AAH 2AAH 55H 555H 80H 555H AAH 2AAH 55H  
555H AAH 2AAH 55H 555H 80H 555H AAH 2AAH 55H  
XXXH B0H  
555H 10H  
SA 30H  
Sector Erase  
Sector Erase Suspend  
Sector Erase Resume  
Unlock for sector  
protect/unprotect  
XXXH 30H  
555H AAH 2AAH 55H 555H 80H 555H AAH 2AAH 55H  
555H 20H  
Note:  
1. ADI = Address of Device identifier; A1=0, A0 = 0 for manufacture code,A1=0, A0 = 1 for device code A2-A18=Do  
not care.  
(Refer to table 3)  
DDI = Data of Device identifier : C2H for manufacture code, A4H for device code.  
X = X can be VIL or VIH  
RA=Address of memory location to be read.  
RD=Data to be read at location RA.  
2. PA = Address of memory location to be programmed.  
PD = Data to be programmed at location PA.  
SA = Address to the sector to be erased.  
3. The system should generate the following address patterns: 555H or 2AAH to Address A10~A0 .  
Address bit A11~A18=X=Don't care for all address commands except for Program Address (PA) and Sector  
Address (SA). Write Sequence may be initiated with A11~A18 in either state.  
4. For Sector ProtectVerify Operation :If read out data is 01H, it means the sector has been protected.If read out data  
is 00H, it means the sector is still not being protected.  
COMMAND DEFINITIONS  
Device operations are selected by writing specific address and data sequences into the command register. Writing  
incorrect address and data values or writing them in the improper sequence will reset the device to the read mode.  
Table 1 defines the valid register command sequences. Note that the Erase Suspend (B0H) and Erase Resume (30H)  
commands are valid only while the Sector Erase operation is in progress. Either of the two reset command sequences  
will reset the device (when applicable).  
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MX29F040C  
TABLE 2. MX29F040C BUS OPERATION  
Pins  
Mode  
CE#  
OE#  
WE#  
A0  
A1  
A6  
A9  
Q0 ~ Q7  
Read Silicon ID  
ManufacturerCode(1)  
Read Silicon ID  
DeviceCode(1)  
Read  
L
L
H
L
L
X
VID(2)  
C2H  
L
L
H
H
L
X
VID(2)  
A4H  
L
H
L
L
L
L
H
X
H
L
A0  
X
A1  
X
A6  
X
A9  
X
DOUT  
Standby  
X
H
H
H
HIGH Z  
HIGH Z  
DIN(3)  
X
OutputDisable  
Write  
X
X
X
X
A0  
X
A1  
X
A6  
L
A9  
H
Sector Protect without 12V  
system (6)  
L
Chip Unprotect without 12V  
system (6)  
L
L
X
H
L
L
X
X
X
X
H
X
H
X
X
H
H
X
X
Verify Sector Protect/Unprotect  
without 12V system (7)  
Reset  
H
X
Code(5)  
HIGH Z  
X
Notes :  
1. Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 1.  
2. VID is the Silicon-ID-Read high voltage, 11.5V to 12.5V.  
3. Refer to Table 1 for valid Data-In during a write operation.  
4. X can be VIL or VIH.  
5. Code=00H means unprotected.  
Code=01H means protected.  
A18~A16=Sector address for sector protect.  
6. Refer to sector protect/unprotect algorithm and waveform.  
Must issue "unlock for sector protect/unprotect" command before "sector protect/unprotect without 12V system"  
command.  
7. The "verify sector protect/unprotect without 12V system" is only following "Sector protect/unprotect without 12V  
system" command.  
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MX29F040C  
READ/RESET COMMAND  
SET-UP AUTOMATIC CHIP/SECTOR ERASE  
The read or reset operation is initiated by writing the read/  
reset command sequence into the command register.  
Microprocessor read cycles retrieve array data. The de-  
vice remains enabled for reads until the command regis-  
ter contents are altered.  
Chip erase is a six-bus cycle operation. There are two  
"unlock" write cycles. These are followed by writing the  
"set-up" command 80H. Two more "unlock" write cycles  
are then followed by the chip erase command 10H.  
The Automatic Chip Erase does not require the device to  
be entirely pre-programmed prior to executing the Auto-  
matic Chip Erase. Upon executing the Automatic Chip  
Erase, the device will automatically program and verify  
the entire memory for an all-zero data pattern. When the  
device is automatically verified to contain an all-zero  
pattern, a self-timed chip erase and verify begin. The  
erase and verify operations are completed when the data  
on Q7 is "1" at which time the device returns to the Read  
mode. The system is not required to provide any control  
or timing during these operations.  
If program-fail or erase-fail happen, the write of F0H will  
reset the device to abort the operation. A valid com-  
mand must then be written to place the device in the  
desired state.  
SILICON-ID-READ COMMAND  
Flash memories are intended for use in applications where  
the local CPU alters memory contents. As such, manu-  
facturer and device codes must be accessible while the  
device resides in the target system. PROM program-  
mers typically access signature codes by raising A9 to  
a high voltage. However, multiplexing high voltage onto  
address lines is not generally desired system design prac-  
tice.  
When using the Automatic Chip Erase algorithm, note  
that the erase automatically terminates when adequate  
erase margin has been achieved for the memory array  
(no erase verification command is required).  
If the Erase operation was unsuccessful, the data on Q5  
is "1"(see Table 4), indicating the erase operation ex-  
ceed internal timing limit.  
The MX29F040C contains a Silicon-ID-Read operation  
to supplement traditional PROM programming methodol-  
ogy. The operation is initiated by writing the read silicon  
ID command sequence into the command register. Fol-  
lowing the command write, a read cycle with  
A1=VIL,A0=VIL retrieves the manufacturer code of C2H.  
A read cycle with A1=VIL, A0=VIH returns the device  
code of A4H for MX29F040C.  
The automatic erase begins on the rising edge of the last  
WE# or CE#, whichever happens first pulse in the com-  
mand sequence and terminates when the data on Q7 is  
"1" and the data on Q6 stops toggling for two consecu-  
tive read cycles, at which time the device returns to the  
Read mode.  
TABLE 3. EXPANDED SILICON ID CODE  
Pins  
A0  
A1  
Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 Code(Hex)  
Manufacturecode  
VIL VIL  
1
1
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
1
0
C2H  
Device code for MX29F040C VIH VIL  
A4H  
Sector Protection Verification X  
X
VIH  
VIH  
01H(Protected)  
00H(Unprotected)  
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MX29F040C  
SECTOR ERASE COMMANDS  
The Automatic Sector Erase does not require the device  
to be entirely pre-programmed prior to executing the Au-  
tomatic Set-up Sector Erase command and Automatic  
Sector Erase command. Upon executing the Automatic  
Sector Erase command, the device will automatically pro-  
gram and verify the sector(s) memory for an all-zero data  
pattern. The system is not required to provide any con-  
trol or timing during these operations.  
(no erase verification command is required). Sector erase  
is a six-bus cycle operation. There are two "unlock" write  
cycles. These are followed by writing the set-up com-  
mand 80H. Two more "unlock" write cycles are then fol-  
lowed by the sector erase command 30H. The sector  
address is latched on the falling edge of WE# or CE#,  
whichever happens later, while the command (data) is  
latched on the rising edge of WE# or CE#, whichever  
happens first. Sector addresses selected are loaded  
into internal register on the sixth falling edge of WE# or  
CE#, whichever happens later. Each successive sector  
load cycle started by the falling edge of WE# or CE#,  
whichever happens later must begin within 30us from  
the rising edge of the precedingWE# or CE#, whichever  
happens first. Otherwise, the loading period ends and  
internal auto sector erase cycle starts. (Monitor Q3 to  
determine if the sector erase timer window is still open,  
see section Q3, Sector EraseTimer.) Any command other  
than Sector Erase (30H) or Erase Suspend (B0H) during  
the time-out period resets the device to read mode.  
When the sector(s) is automatically verified to contain  
an all-zero pattern, a self-timed sector erase and verify  
begin. The erase and verify operations are complete  
when the data on Q7 is "1" and the data on Q6 stops  
toggling for two consecutive read cycles, at which time  
the device returns to the Read mode. The system is not  
required to provide any control or timing during these op-  
erations.  
When using the Automatic Sector Erase algorithm, note  
that the erase automatically terminates when adequate  
erase margin has been achieved for the memory array  
TABLE 4. Write Operation Status  
Status  
Q7  
Q6  
Q5  
Q3  
Q2  
Note1  
Note2  
Byte Program in Auto Program Algorithm  
Auto Erase Algorithm  
Q7# Toggle  
0
0
0
N/A No Toggle  
0
1
Toggle  
No  
1
Toggle  
Toggle  
Erase Suspend Read  
N/A  
In Progress  
(Erase Suspended Sector)  
Erase Suspend Read  
Toggle  
Erase Suspended Mode  
Data Data Data Data  
Data  
N/A  
(Non-Erase Suspended Sector)  
Erase Suspend Program  
Q7# Toggle  
Q7# Toggle  
0
1
1
1
N/A  
Byte Program in Auto Program Algorithm  
N/A No Toggle  
Exceeded Auto Erase Algorithm  
0
Toggle  
1
Toggle  
N/A  
Time Limits Erase Suspend Program  
Q7# Toggle  
N/A  
Note:  
1. Q7 and Q2 require a valid address when reading status information. Refer to the appropriate subsection for further  
details.  
2. Q5 switches to '1' when an Auto Program or Auto Erase operation has exceeded the maximum timing limits.  
See "Q5:Exceeded Timing Limits " for more information.  
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8
MX29F040C  
Once the Automatic Program command is initiated, the  
next WE# or CE# pulse causes a transition to an active  
programming operation. Addresses are latched on the  
falling edge, and data are internally latched on the  
rising edge of the WE# or CE#, whichever happens first  
pulse. The rising edge of WE# or CE#, whichever hap-  
pens first also begins the programming operation. The  
system is not required to provide further controls or tim-  
ings. The device will automatically provide an adequate  
internally generated program pulse and verify margin.  
ERASE SUSPEND  
This command only has meaning while the state ma-  
chine is executing Automatic Sector Erase operation, and  
therefore will only be responded during Automatic Sector  
Erase operation. When the Erase Suspend command is  
written during a sector erase operation, the device re-  
quires a maximum of 20us to suspend the erase opera-  
tions. However, When the Erase Suspend command is  
written during the sector erase time-out, the device im-  
mediately terminates the time-out period and suspends  
the erase operation. After this command has been ex-  
ecuted, the command register will initiate erase suspend  
mode. The state machine will return to read mode auto-  
matically after suspend is ready. At this time, state ma-  
chine only allows the command register to respond to  
the Read Memory Array, Erase Resume and program  
commands.  
If the program operation was unsuccessful, the data on  
Q5 is "1"(see Table 4), indicating the program operation  
exceed internal timing limit.The automatic programming  
operation is completed when the data read on Q6 stops  
toggling for two consecutive read cycles and the data on  
Q7 and Q6 are equivalent to data written to these two  
bits, at which time the device returns to the Read mode  
(no program verify command is required).  
The system can determine the status of the program  
operation using the Q7 or Q6 status bits, just as in the  
standard program operation.After an erase-suspend pro-  
gram operation is complete, the system can once again  
read array data within non-suspended sectors.  
DATA# POLLING-Q7  
The MX29F040C also features Data# Polling as a method  
to indicate to the host system that the Automatic Pro-  
gram or Erase algorithms are either in progress or com-  
pleted.  
ERASE RESUME  
This command will cause the command register to clear  
the suspend state and return back to Sector Erase mode  
but only if an Erase Suspend command was previously  
issued. Erase Resume will not have any effect in all  
other conditions.Another Erase Suspend command can  
be written after the chip has resumed erasing.However,  
a 400us time delay must be required after the erase re-  
sume command, if the system implements an endless  
erase suspend/resume loop, or the number of erase sus-  
pend/resume is exceeded 1024 times.The erase times  
will be expended if the erase behavior always be sus-  
pended.  
While the Automatic Programming algorithm is in opera-  
tion, an attempt to read the device will produce the comple-  
ment data of the data last written to Q7. Upon comple-  
tion of the Automatic Program Algorithm an attempt to  
read the device will produce the true data last written to  
Q7. The Data# Polling feature is valid after the rising  
edge of the fourth WE# or CE#, whichever happens first  
pulse of the four write pulse sequences for automatic pro-  
gram.  
While the Automatic Erase algorithm is in operation, Q7  
will read "0" until the erase operation is competed. Upon  
completion of the erase operation, the data on Q7 will  
read "1". The Data# Polling feature is valid after the ris-  
ing edge of the sixth WE# or CE#, whichever happens  
first pulse of six write pulse sequences for automatic  
chip/sector erase.  
SET-UP AUTOMATIC PROGRAM COMMANDS  
To initiate Automatic Program mode, A three-cycle com-  
mand sequence is required. There are two "unlock" write  
cycles. These are followed by writing the Automatic Pro-  
gram command A0H.  
The Data# Polling feature is active during Automatic Pro-  
gram/Erase algorithm or sector erase time-out.(see sec-  
tion Q3 Sector EraseTimer)  
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MX29F040C  
the rising edge of the final WE# or CE#, whichever hap-  
pens first pulse in the command sequence.  
Q6:Toggle BIT I  
Toggle Bit I on Q6 indicates whether an Automatic Pro-  
gram or Erase algorithm is in progress or complete, or  
whether the device has 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# or CE#, whichever  
happens first pulse in the command sequence (prior to  
the program or erase operation), and during the sector  
time-out.  
Q2 toggles when the system reads at addresses within  
those sectors that have been selected for erasure. (The  
system may use either OE# or CE# to control the read  
cycles.) But Q2 cannot distinguish whether the sector  
is actively erasing or is erase-suspended. Q6, by com-  
parison, indicates whether the device is actively eras-  
ing, or is in Erase Suspend, but cannot distinguish which  
sectors are selected for erasure. Thus, both status bits  
are required for sectors and mode information. Refer to  
Table 4 to compare outputs for Q2 and Q6.  
During an Automatic Program or Erase algorithm opera-  
tion, successive read cycles to any address cause Q6  
to toggle. The system may use either OE# or CE# to  
control the read cycles.When the operation is complete,  
Q6 stops toggling.  
Reading Toggle Bits Q6/ Q2  
After an erase command sequence is written, if all sec-  
tors selected for erasing are protected, Q6 toggles and  
returns to reading array data. If not all selected sectors  
are protected, the Automatic Erase algorithm erases the  
unprotected sectors, and ignores the selected sectors  
that are protected.  
Whenever the system initially begins reading toggle bit  
status, it must read Q7-Q0 at least twice in a row to  
determine whether a toggle bit is toggling. Typically, the  
system would note and store the value of the toggle bit  
after the first read. After the second read, the system  
would compare the new value of the toggle bit with the  
first. If the toggle bit is not toggling, the device has com-  
pleted the program or erase operation. The system can  
read array data on Q7-Q0 on the following read cycle.  
The system can use Q6 and Q2 together to determine  
whether a sector is actively erasing or is erase suspended.  
When the device is actively erasing (that is, the Auto-  
matic Erase algorithm is in progress), Q6 toggling.When  
the device enters the Erase Suspend mode, Q6 stops  
toggling. However, the system must also use Q2 to de-  
termine which sectors are erasing or erase-suspended.  
Alternatively, the system can use Q7.  
However, if after the initial two read cycles, the system  
determines that the toggle bit is still toggling, the sys-  
tem also should note whether the value of Q5 is high  
(see the section on Q5). If it is, the system should then  
determine again whether the toggle bit is toggling, since  
the toggle bit may have stopped toggling just as Q5 went  
high. If the toggle bit is no longer toggling, the device  
has successfully completed the program or erase opera-  
tion. If it is still toggling, the device did not complete the  
operation successfully, and the system must write the  
reset command to return to reading array data.  
If a program address falls within a protected sector, Q6  
toggles for approximately 2us after the program command  
sequence is written, then returns to reading array data.  
Q6 also toggles during the erase-suspend-program mode,  
and stops toggling once the Automatic Program algorithm  
is complete.  
The remaining scenario is that system initially determines  
that the toggle bit is toggling and Q5 has not gone high.  
The system may continue to monitor the toggle bit and  
Q5 through successive read cycles, determining the sta-  
tus as described in the previous paragraph. Alternatively,  
it may choose to perform other system tasks. In this  
case, the system must start at the beginning of the al-  
gorithm when it returns to determine the status of the  
operation.  
Table 4 shows the outputs for Toggle Bit I on Q6.  
Q2:Toggle Bit II  
The "Toggle Bit II" on Q2, when used with Q6, indicates  
whether a particular sector is actively erasing (that is,  
the Automatic Erase algorithm is in process), or whether  
that sector is erase-suspended. Toggle Bit I is valid after  
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REV. 1.0, DEC. 20, 2005  
10  
MX29F040C  
several features to prevent inadvertent write cycles re-  
sulting fromVCC power-up and power-down transition or  
system noise.  
Q5  
Exceeded Timing Limits  
Q5 will indicate if the program or erase time has exceeded  
the specified limits (internal pulse count). Under these  
conditions Q5 will produce a "1". This time-out condition  
indicates that the program or erase cycle was not suc-  
cessfully completed. Data# Polling and Toggle Bit are  
the only operating functions of the device under this con-  
dition.  
Q3  
Sector Erase Timer  
After the completion of the initial sector erase command  
sequence, the sector erase time-out will begin. Q3 will  
remain low until the time-out is complete. Data# Polling  
andToggle Bit are valid after the initial sector erase com-  
mand sequence.  
If this time-out condition occurs during sector erase op-  
eration, it specifies that a particular sector is bad and it  
may not be reused. However, other sectors are still func-  
tional and may be used for the program or erase opera-  
tion. The device must be reset to use other sectors.  
Write the Reset command sequence to the device, and  
then execute program or erase command sequence. This  
allows the system to continue to use the other active  
sectors in the device.  
If Data# Polling or theToggle Bit indicates the device has  
been written with a valid erase command, Q3 may be  
used to determine if the sector erase timer window is  
still open. If Q3 is high ("1") the internally controlled  
erase cycle has begun; attempts to write subsequent  
commands to the device will be ignored until the erase  
operation is completed as indicated by Data# Polling or  
Toggle Bit. If Q3 is low ("0"), the device will accept addi-  
tional sector erase commands. To insure the command  
has been accepted, the system software should check  
the status of Q3 prior to and following each subsequent  
sector erase command. If Q3 were high on the second  
status check, the command may not have been accepted.  
If this time-out condition occurs during the chip erase  
operation, it specifies that the entire chip is bad or com-  
bination of sectors are bad.  
If this time-out condition occurs during the byte program-  
ming operation, it specifies that the entire sector con-  
taining that byte is bad and this sector may not be re-  
used, (other sectors are still functional and can be re-  
used).  
WRITE PULSE "GLITCH" PROTECTION  
The time-out condition may also appear if a user tries to  
program a non blank location without erasing. In this  
case the device locks out and never completes the Au-  
tomatic Algorithm operation. Hence, the system never  
reads a valid data on Q7 bit and Q6 never stops toggling.  
Once the Device has exceeded timing limits, the Q5 bit  
will indicate a "1". Please note that this is not a device  
failure condition since the device was incorrectly used.  
Noise pulses of less than 5ns (typical) on CE# or WE#  
will not initiate a write cycle.  
LOGICAL INHIBIT  
Writing is inhibited by holding any one of OE# = VIL,  
CE# = VIH or WE# = VIH. To initiate a write cycle CE#  
and WE# must be a logical zero while OE# is a logical  
one.  
DATA PROTECTION  
The MX29F040C is designed to offer protection against  
accidental erasure or programming caused by spurious  
system level signals that may exist during power transi-  
tion. During power up the device automatically resets  
the state machine in the Read mode. In addition, with its  
control register architecture, alteration of the memory  
contents only occurs after successful completion of spe-  
cific command sequences. The device also incorporates  
POWER SUPPLY DECOUPLING  
In order to reduce power switching effect, each device  
should have a 0.1uF ceramic capacitor connected be-  
tween itsVCC and GND.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
11  
MX29F040C  
POWER-UP SEQUENCE  
The MX29F040C powers up in the Read only mode. In  
addition, the memory contents may only be altered after  
successful completion of the predefined command se-  
quences.  
SECTOR PROTECTION WITHOUT 12V SYS-  
TEM  
The MX29F040C also feature a sector protection method  
in a system without 12V power supply.The programming  
equipment do not need to supply 12 volts to protect sec-  
tors. The details are shown in sector protect algorithm  
and waveform.  
CHIP UNPROTECT WITHOUT 12V SYSTEM  
The MX29F040C also feature a chip unprotection method  
in a system without 12V power supply.The programming  
equipment do not need to supply 12 volts to unprotect all  
sectors. The details are shown in chip unprotect algo-  
rithm and waveform.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
12  
MX29F040C  
CAPACITANCE (TA = 25oC, f = 1.0 MHz)  
SYMBOL  
CIN1  
PARAMETER  
MIN.  
TYP  
MAX.  
8
UNIT  
pF  
CONDITIONS  
VIN = 0V  
Input Capacitance  
Control Pin Capacitance  
Output Capacitance  
CIN2  
12  
pF  
VIN = 0V  
COUT  
12  
pF  
VOUT = 0V  
READ OPERATION  
DC CHARACTERISTICS (TA = -40oC to 85oC, VCC = 5V±10%)  
SYMBOL PARAMETER  
MIN.  
TYP  
MAX.  
UNIT  
CONDITIONS  
ILI  
Input Leakage Current  
1
uA  
uA  
mA  
uA  
mA  
mA  
V
VIN = GND to VCC  
VOUT = GND to VCC  
CE# = VIH  
ILO  
Output Leakage Current  
Standby VCC current  
10  
ISB1  
ISB2  
ICC1  
ICC2  
VIL  
1
1
5
CE# = VCC + 0.3V  
IOUT = 0mA, f=5MHz  
IOUT = 0mA, f=10MHz  
Operating VCC current  
30  
50  
Input Low Voltage  
-0.3(NOTE 1)  
0.7xVCC  
0.8  
VIH  
Input High Voltage  
VCC + 0.3  
0.45  
V
VOL  
VOH1  
VOH2  
Output Low Voltage  
Output High Voltage(TTL)  
V
IOL = 2.1mA, VCC=VCC MIN  
IOH = -2mA, VCC=VCC MIN  
IOH = -100uA,VCC=VCC MIN  
2.4  
V
Output High Voltage(CMOS) VCC-0.4  
V
Notes :  
1. VIL min. = -1.0V for pulse width is equal to or less than 50 ns.  
VIL min. = -2.0V for pulse width is equal to or less than 20 ns.  
2. VIH max. = VCC + 1.5V for pulse width is equal to or less than 20 ns.  
If VIH is over the specified maximum value, read operation cannot be guaranteed.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
13  
MX29F040C  
AC CHARACTERISTICS (TA =-40oC to 85oC, VCC = 5V±10%)  
29F040C-55 29F040C-70  
29F040C-90  
SYMBOL PARAMETER  
MIN. MAX. MIN. MAX. MIN. MAX. UNIT Conditions  
tACC  
tCE  
Address to Output Delay  
55  
55  
30  
20  
70  
70  
30  
20  
90  
90  
35  
20  
ns  
ns  
ns  
ns  
CE#=OE#=VIL  
OE#=VIL  
CE# to Output Delay  
OE# to Output Delay  
OE# High to Output Float  
(Note 1)  
tOE  
tDF  
CE#=VIL  
0
0
0
0
0
CE#=VIL  
tOH  
Address to Output hold  
0
ns  
CE#=OE#=VIL  
TEST CONDITIONS:  
Note:  
Input pulse levels: 0.45V/0.7xVCC for 70ns & 90ns,  
0V/0.7xVCC for 55ns  
Input rise and fall times: is equal to or less than 10ns  
for 70ns & 90ns, 5ns for 55ns  
1. tDFisdefinedasthetimeatwhichtheoutputachieves  
theopencircuitconditionanddataisnolongerdriven.  
Output load:1TTL gate + 100pF (Including scope and  
jig) for 70ns & 90ns, 1TTLgate+30pF for 55ns max.  
Reference levels for measuring timing: 0.8V, 2.0V for  
70ns & 90ns,1.5V for 55ns  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
14  
MX29F040C  
NOTICE:  
ABSOLUTE MAXIMUM RATINGS  
Stresses greater than those listed under ABSOLUTE  
MAXIMUM RATINGS may cause permanent damage to  
the device. This is a stress rating only and functional op-  
erational sections of this specification is not implied. Ex-  
posure to absolute maximum rating conditions for ex-  
tended period may affect reliability.  
RATING  
VALUE  
Ambient Operating Temperature -40oC to 85oC  
Storage Temperature  
Ambient Temperature with Power -55oC to 125oC  
-65oC to 125oC  
Applied  
NOTICE:  
Applied Input Voltage  
Applied Output Voltage  
VCC to Ground Potential  
A9  
-0.5V to 7.0V  
-0.5V to 7.0V  
-0.5V to 7.0V  
-0.5V to 13.5V  
Specifications contained within the following tables are  
subject to change.  
READ TIMING WAVEFORMS  
VIH  
ADD Valid  
Addresses  
VIL  
tCE  
VIH  
CE#  
VIL  
VIH  
WE#  
tDF  
VIL  
tOE  
VIH  
OE#  
tACC  
VIL  
tOH  
HIGH Z  
HIGH Z  
VOH  
VOL  
Outputs  
DATA Valid  
COMMAND PROGRAMMING/DATA PROGRAMMING/ERASE OPERATION  
DC CHARACTERISTICS (TA = -40oC to 85oC,VCC = 5V±10%)  
SYMBOL  
PARAMETER  
MIN.  
TYP  
MAX.  
30  
UNIT  
mA  
mA  
mA  
mA  
mA  
CONDITIONS  
ICC1 (Read)  
ICC2  
Operating VCC Current  
IOUT=0mA, f=5MHz  
IOUT=0mA, f=10MHz  
In Programming  
50  
ICC3 (Program)  
ICC4 (Erase)  
ICCES  
50  
50  
In Erase  
VCC Erase Suspend Current  
2
CE#=VIH, Erase Suspended  
NOTES:  
3. ICCES is specified with the device de-selected. If the  
device is read during erase suspend mode, current draw  
is the sum of ICCES and ICC1 or ICC2.  
1. VILmin.=-0.6Vforpulsewidthisequaltoorlessthan20ns.  
2. If VIH is over the specified maximum value, programming  
operation cannot be guaranteed.  
4. All current are in RMS unless otherwise noted.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
15  
MX29F040C  
AC CHARACTERISTICS TA = -40oC to 85oC, VCC = 5V ± 10%  
Speed Option  
SYMBOL PARAMETER  
55(Note 2)  
70  
0
90  
0
UNIT  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
s
tOES  
tCWC  
tCEP  
tCEPH  
tAS  
OE# setup time  
MIN.  
MIN.  
MIN.  
MIN.  
MIN.  
MIN.  
MIN.  
MIN.  
MIN.  
MAX.  
TYP.  
MAX.  
TYP.  
MAX.  
TYP.  
MAX.  
MIN.  
MIN.  
MIN.  
0
55  
35  
20  
0
Commandprogrammingcycle  
WE#programmingpulsewidth  
WE#programmingpulsewidthHigh  
Address setup time  
70  
35  
20  
0
90  
45  
20  
0
tAH  
Address hold time  
45  
30  
0
45  
30  
0
45  
45  
0
tDS  
Data setup time  
tDH  
Data hold time  
tCESC  
tDF  
CE# setup time before command write  
Output disable time (Note 1)  
Erase time in auto chip erase  
0
0
0
20  
4
20  
4
20  
4
tAETC  
32  
0.7  
15  
9
32  
0.7  
15  
9
32  
0.7  
15  
9
s
tAETB  
tAVT  
Erase time in auto sector erase  
Programming time in auto verify  
s
s
us  
us  
us  
ns  
ns  
300  
50  
0
300  
50  
0
300  
50  
0
tBAL  
tCH  
Sector address load time  
CE# Hold Time  
tCS  
CE# setup to WE# going low  
0
0
0
Notes:  
1. tDF defined as the time at which the output achieves the open circuit condition and data is no longer driven.  
2.Under condition ofVCC=5V±10%,CL=30pF,VIH/VIL=0.7xVCC/0V,VOH/VOL=1.5V/1.5V,IOL=2mA,IOH=2mA.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
16  
MX29F040C  
SWITCHING TEST CIRCUITS  
DEVICE UNDER  
TEST  
2.7K ohm  
+5V  
CL  
6.2K ohm  
DIODES=IN3064  
OR EQUIVALENT  
CL=100pF Including jig capacitance for 70ns and 90ns  
CL=30pF Including jig capacitance for 55ns  
SWITCHING TEST WAVEFORMS for 29F040C-70 and 29F040C-90  
0.7xVCC  
2.0V  
0.8V  
2.0V  
0.8V  
TEST POINTS  
0.45V  
INPUT  
OUTPUT  
AC TESTING: Inputs are driven at 0.7xVCC for a logic "1" and 0.45V for a logic "0".  
Input pulse rise and fall times are < 10ns.  
SWITCHING TEST WAVEFORMS for 29F040C-55  
0.7xVCC  
1.5V  
1.5V  
TEST POINTS  
0V  
INPUT  
OUTPUT  
AC TESTING: Inputs are driven at 0.7xVCC for a logic "1" and 0V for a logic "0".  
Input pulse rise and fall times are < 5ns.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
17  
MX29F040C  
COMMAND WRITE TIMING WAVEFORM  
VCC  
5V  
VIH  
Addresses  
ADD Valid  
VIL  
tAH  
tAS  
VIH  
VIL  
WE#  
CE#  
tOES  
tCEPH1  
tCEP  
tCWC  
VIH  
VIL  
tCS  
tCH  
tDH  
VIH  
VIL  
OE#  
Data  
tDS  
VIH  
VIL  
DIN  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
18  
MX29F040C  
AUTOMATIC PROGRAMMING TIMING WAVEFORM  
One byte data is programmed. Verify in fast algorithm  
and additional programming by external control are not  
required because these operations are executed auto-  
matically by internal control circuit. Programming comple-  
tion can be verified by Data# Polling and toggle bit check-  
ing after automatic verification starts. Device outputs  
DATA# during programming and DATA# after programming  
on Q7.(Q6 is for toggle bit; see toggle bit, Data# Polling,  
timing waveform)  
AUTOMATIC PROGRAMMING TIMING WAVEFORM  
VCC 5V  
A11~A18  
2AAH  
ADD Valid  
555H  
ADD Valid  
A0~A10  
555H  
tAS  
tCWC  
tCEPH  
tAH  
WE#  
tCESC  
tAVT  
CE#  
OE#  
tCEP  
tDS tDH  
tDF  
Q0,Q1,Q2  
Q4(Note 1)  
DATA  
DATA  
Command In  
Command In  
Command In  
Data In  
Data In  
DATA# polling  
DATA#  
Command In  
Command In  
Command In  
Q7  
Command #A0H  
Command #55H  
Command #AAH  
(Q0~Q7)  
tOE  
Note :  
(1). Q6:Toggle bit, Q5:Timing-limit bit, Q3: Time-out bit  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
19  
MX29F040C  
AUTOMATIC PROGRAMMING ALGORITHM FLOWCHART  
START  
Write Data AAH Address 555H  
Write Data 55H Address 2AAH  
Write Data A0H Address 555H  
Write Program Data/Address  
NO  
Toggle Bit Checking  
Q6 not Toggled  
YES  
NO  
Invalid  
Verify Byte Ok  
Command  
YES  
NO  
.
Q5 = 1  
Auto Program Completed  
YES  
Reset  
Auto Program Exceed  
Timing Limit  
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REV. 1.0, DEC. 20, 2005  
20  
MX29F040C  
AUTOMATIC CHIP ERASE TIMING WAVEFORM  
All data in chip are erased. External erase verification is  
not required because data is erased automatically by  
internal control circuit. Erasure completion can be veri-  
fied by Data# Polling and toggle bit checking after  
automaticerasestarts. Deviceoutputs0duringerasure  
and1aftererasureonQ7.(Q6isfortogglebit;seetoggle  
bit, Data# Polling, timing waveform)  
AUTOMATIC CHIP ERASE TIMING WAVEFORM  
VCC 5V  
A11~A18  
2AAH  
555H  
555H  
2AAH  
A0~A10  
WE#  
555H  
555H  
tAS  
tCWC  
tAH  
tCEPH  
tAETC  
CE#  
OE#  
tCEP  
tDS tDH  
Q0,Q1,  
Command In  
Command In  
Command In  
Command In  
Command In  
Command In  
Q4(Note 1)  
Data# Polling  
Command In  
Command In  
Command In  
Command In  
Command In  
Command In  
Q7  
Command #80H  
Command #AAH  
Command #55H  
Command #10H  
Command #AAH  
Command #55H  
(Q0~Q7)  
Note :  
(1). Q6:Toggle bit, Q5:Timing-limit bit, Q3: Time-out bit, Q2: Toggle bit  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
21  
MX29F040C  
AUTOMATIC CHIP ERASE ALGORITHM FLOWCHART  
START  
Write Data AAH Address 555H  
Write Data 55H Address 2AAH  
Write Data 80H Address 555H  
Write Data AAH Address 555H  
Write Data 55H Address 2AAH  
Write Data 10H Address 555H  
NO  
Toggle Bit Checking  
Q6 not Toggled  
YES  
NO  
Invalid  
Data# Polling  
Q7 = 1  
Command  
YES  
.
Q5 = 1  
Auto Chip Erase Completed  
YES  
Reset  
Auto Chip Erase Exceed  
Timing Limit  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
22  
MX29F040C  
AUTOMATIC SECTOR ERASE TIMING WAVEFORM  
Sector dataindicatedbyA16toA18areerased. External  
erase verify is not required because data are erased  
automaticallybyinternalcontrolcircuit. Erasurecomple-  
tion can be verified by Data# Polling and toggle bit  
checking after automatic erase starts. Device outputs 0  
duringerasureand1aftererasureonQ7.(Q6isfortoggle  
bit; see toggle bit, Data# Polling, timing waveform)  
AUTOMATIC SECTOR ERASE TIMING WAVEFORM  
VCC 5V  
Sector  
Addressn  
Sector  
Address0  
Sector  
Address1  
A16-A18  
555H  
555H  
555H  
tAS  
2AAH  
2AAH  
A0~A10  
tCWC  
tAH  
WE#  
CE#  
tCEPH  
tBAL  
tAETB  
tCEP  
tDS  
OE#  
tDH  
Command  
In  
Command  
In  
Q0,Q1,  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Q4(Note 1)  
Data# Polling  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Command  
In  
Q7  
Command #AAH Command #55H Command #80H Command #AAH Command #55H Command #30H  
(Q0~Q7)  
Command #30H  
Command #30H  
Note :  
(1). Q6:Toggle bit, Q5:Timing-limit bit, Q3: Time-out bit, Q2: Toggle bit  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
23  
MX29F040C  
AUTOMATIC SECTOR ERASE ALGORITHM FLOWCHART  
START  
Write Data AAH Address 555H  
Write Data 55H Address 2AAH  
Write Data 80H Address 555H  
Write Data AAH Address 555H  
Write Data 55H Address 2AAH  
Write Data 30H Sector Address  
NO  
Toggle Bit Checking  
Invalid Command  
Q6 Toggled ?  
YES  
Load Other Sector Addrss If Necessary  
(Load Other Sector Address)  
NO  
Last Sector  
to Erase  
YES  
NO  
NO  
Time-out Bit  
Checking Q3=1 ?  
YES  
Toggle Bit Checking  
Q6 not Toggled  
YES  
.
Q5 = 1  
Data# Polling  
Q7 = 1  
Reset  
Auto Sector Erase Completed  
Auto Sector Erase Exceed  
Timing Limit  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
24  
MX29F040C  
ERASE SUSPEND/ERASE RESUME FLOWCHART  
START  
Write Data B0H  
ERASE SUSPEND  
NO  
Toggle Bit checking Q6  
not toggled  
YES  
Read Array or  
Program  
Reading or  
NO  
Programming End  
YES  
Write Data 30H  
Delay 400us (note)  
Continue Erase  
ERASE RESUME  
Another  
NO  
Erase Suspend ?  
YES  
Note: If the system implements an endless erase suspend/resume loop, or the number of erase suspend/resume is  
exceeded 1024 times, then the 400us time delay must be put into consideration.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
25  
MX29F040C  
TIMING WAVEFORM FOR SECTOR PROTECTION FOR SYSTEM WITHOUT 12V  
A1  
A6  
Toggle bit polling  
Verify  
5V  
OE#  
tCEP  
WE#  
* See the following Note!  
CE#  
Data  
Don't care  
(Note 2)  
01H  
F0H  
tOE  
A18-A16  
Sector Address  
Note1: Must issue "unlock for sector protect/unprotect" command before sector protection  
for a system without 12V provided.  
Note2: Except F0H  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
26  
MX29F040C  
TIMING WAVEFORM FOR CHIP UNPROTECTION FOR SYSTEM WITHOUT 12V  
A1  
A6  
Toggle bit polling  
Verify  
5V  
OE#  
tCEP  
WE#  
* See the following Note!  
CE#  
Data  
Don't care  
(Note 2)  
F0H  
00H  
tOE  
Note1: Must issue "unlock for sector protect/unprotect" command before sector unprotection  
for a system without 12V provided.  
Note2: Except F0H  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
27  
MX29F040C  
SECTOR PROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V  
START  
PLSCNT=1  
Write "unlock for sector protect/unprotect"  
Command(Table1)  
Set Up Sector Addr  
(A18, A17, A16)  
OE#=VIH,A9=VIH  
CE#=VIL,A6=VIL  
Activate WE# Pulse to start  
Data don't care  
Toggle bit checking  
Q6 not Toggled  
No  
.
Yes  
Increment PLSCNT  
Set CE#=OE#=VIL  
A9=VIH  
Read from Sector  
Addr=SA, A1=1  
No  
No  
Data=01H?  
PLSCNT=32?  
Yes  
Device Failed  
Yes  
Protect Another  
Sector?  
Write Reset Command  
Sector Protection  
Complete  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
28  
MX29F040C  
CHIP UNPROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V  
START  
Protect All Sectors  
PLSCNT=1  
Write "unlock for sector protect/unprotect"  
Command (Table 1)  
Set OE#=A9=VIH  
CE#=VIL,A6=1  
Activate WE# Pulse to start  
Data do'nt care  
No  
Toggle bit checking  
Q6 not Toggled  
Increment  
PLSCNT  
Yes  
Set OE#=CE#=VIL  
A9=VIH,A1=1  
Set Up First Sector Addr  
Read Data from Device  
No  
No  
Data=00H?  
Yes  
PLSCNT=1000?  
Increment  
Sector Addr  
Yes  
Device Failed  
No  
All sectors have  
been verified?  
Yes  
Write Reset Command  
Chip Unprotect  
Complete  
* It is recommended before unprotect whole chip, all sectors should be protected in advance.  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
29  
MX29F040C  
ID CODE READ TIMING WAVEFORM  
VCC  
5V  
VID  
ADD  
A9  
VIH  
VIL  
VIH  
VIL  
ADD  
A0  
tACC  
tACC  
VIH  
VIL  
A1  
ADD  
A2-A8  
VIH  
A10-A18 VIL  
CE#  
VIH  
VIL  
VIH  
VIL  
tCE  
WE#  
OE#  
tOE  
VIH  
VIL  
tDF  
tOH  
tOH  
VIH  
VIL  
DATA  
Q0-Q7  
DATA OUT  
C2H  
DATA OUT  
A4H  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
30  
MX29F040C  
ERASE AND PROGRAMMING PERFORMANCE (1)  
LIMITS  
PARAMETER  
MIN.  
TYP.(2)  
MAX.(3)  
15  
UNITS  
sec  
Sector Erase Time  
Chip Erase Time  
0.7  
4
32  
sec  
Byte Programming Time  
Chip Programming Time  
Erase/Program Cycles  
9
300  
us  
4.5  
13.5  
sec  
100,000  
Cycles  
Note: 1.Not 100% Tested, Excludes external system level over head.  
2.Typical values measured at 25°C,5V.  
3.Maximunm values measured at 25° C,4.5V.  
LATCH-UP CHARACTERISTICS  
MIN.  
-1.0V  
MAX.  
Input Voltage with respect to GND on all pins except I/O pins  
Input Voltage with respect to GND on all I/O pins  
Current  
13.5V  
Vcc + 1.0V  
+100mA  
-1.0V  
-100mA  
Includes all pins except Vcc. Test conditions: Vcc = 5.0V, one pin at a time.  
DATA RETENTION  
PARAMETER  
MIN.  
UNIT  
Data Retention Time  
20  
Years  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
31  
MX29F040C  
ORDERING INFORMATION  
PART NO.  
AccessTime Operating Current Standby Current Temperature PACKAGE  
Remark  
(ns)  
MAX.(mA)  
MAX.(uA)  
Range  
MX29F040CQI-55  
MX29F040CQI-70  
MX29F040CQI-90  
MX29F040CTI-55  
55  
70  
90  
55  
30  
30  
30  
30  
5
5
5
5
-40oC~85oC 32 Pin PLCC  
-40oC~85oC 32 Pin PLCC  
-40oC~85oC 32 Pin PLCC  
-40oC~85oC 32 Pin TSOP  
(Normal Type)  
MX29F040CTI-70  
MX29F040CTI-90  
70  
90  
30  
30  
5
5
-40oC~85oC 32 Pin TSOP  
(Normal Type)  
-40oC~85oC 32 Pin TSOP  
(Normal Type)  
MX29F040CPI-55  
MX29F040CPI-70  
MX29F040CPI-90  
MX29F040CQI-55G  
MX29F040CQI-70G  
MX29F040CQI-90G  
MX29F040CTI-55G  
55  
70  
90  
55  
70  
90  
55  
30  
30  
30  
30  
30  
30  
30  
5
5
5
5
5
5
5
-40oC~85oC 32 Pin PDIP  
-40oC~85oC 32 Pin PDIP  
-40oC~85oC 32 Pin PDIP  
-40oC~85oC 32 Pin PLCC PB free  
-40oC~85oC 32 Pin PLCC PB free  
-40oC~85oC 32 Pin PLCC PB free  
-40oC~85oC 32 Pin TSOP PB free  
(Normal Type)  
MX29F040CTI-70G  
MX29F040CTI-90G  
70  
90  
30  
30  
5
5
-40oC~85oC 32 Pin TSOP PB free  
(Normal Type)  
-40oC~85oC 32 Pin TSOP PB free  
(Normal Type)  
MX29F040CPI-55G  
MX29F040CPI-70G  
MX29F040CPI-90G  
55  
70  
90  
30  
30  
30  
5
5
5
-40oC~85oC 32 Pin PDIP PB free  
-40oC~85oC 32 Pin PDIP PB free  
-40oC~85oC 32 Pin PDIP PB free  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
32  
MX29F040C  
PART NAME DESCRIPTION  
MX 29 F 040 C T I  
70 G  
OPTION:  
G: Lead-free package  
blank: normal  
SPEED:  
55:55ns  
70:70ns  
90: 90ns  
TEMPERATURE RANGE:  
I: Industrial (-40˚aC to 85˚ C  
PACKAGE:  
P: PDIP  
Q: PLCC  
T: TSOP  
REVISION:  
C
DENSITY & MODE:  
040: 4, x8 Equal Sector  
TYPE:  
F: 5V  
DEVICE:  
29: Flash  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
33  
MX29F040C  
PACKAGE INFORMATION  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
34  
MX29F040C  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
35  
MX29F040C  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
36  
MX29F040C  
REVISION HISTORY  
Revision No. Description  
Page  
P1  
Date  
DEC/20/2005  
1.0  
1. Removed "Preliminary" title  
2. Removed commercial grade  
All  
3. Added access time: 55ns; Removed access time: 120ns  
All  
P/N:PM1201  
REV. 1.0, DEC. 20, 2005  
37  
MX29F040C  
MACRONIX INTERNATIONALCO., LTD.  
Headquarters:  
TEL:+886-3-578-6688  
FAX:+886-3-563-2888  
Europe Office :  
TEL:+32-2-456-8020  
FAX:+32-2-456-8021  
Hong Kong Office :  
TEL:+86-755-834-335-79  
FAX:+86-755-834-380-78  
Japan Office :  
Kawasaki Office :  
TEL:+81-44-246-9100  
FAX:+81-44-246-9105  
Osaka Office :  
TEL:+81-6-4807-5460  
FAX:+81-6-4807-5461  
Singapore Office :  
TEL:+65-6346-5505  
FAX:+65-6348-8096  
Taipei Office :  
TEL:+886-2-2509-3300  
FAX:+886-2-2509-2200  
MACRONIX AMERICA, INC.  
TEL:+1-408-262-8887  
FAX:+1-408-262-8810  
http : //www.macronix.com  
MACRONIX INTERNATIONAL CO., LTD. reserves the right to change product and specifications without notice.  

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