Table 32: WE#-Controlled Write AC Characteristics
Parameter
Symbol
Min Typ Max Unit Notes
Legacy JEDEC
WRITE cyle time tWC – 60 – – ns
CE# LOW to WE# LOW tCS tELWL 0 – – ns
WE# LOW to WE# HIGH tWP tWLWH 35 – – ns
Input valid to WE# HIGH tDS tDVWH 30 – – ns 1
WE# HIGH to input transition tDH tWHDX 0 – – ns
WE# HIGH to CE# HIGH tCH tWHEH 0 – – ns
WE# HIGH to WE# LOW tWPH tWHWL 20 – – ns
Address valid to WE# LOW tAS tAVWL 0 – – ns
WE# LOW to address transition tAH tWLAX 45 – – ns
OE# HIGH to WE# LOW – tGHWL 0 – – ns
WE# HIGH to OE# LOW tOEH tWHGL 0 – – ns
Program/erase valid to RY/BY# LOW tBUSY tWHRL – – 90 ns 2
WE# HIGH to OE# valid – tWHQV tAVQV
+ 30
– – ns
VHH rise or fall time on VPP/WP# – tVHVPP 250 – – ns
Notes: 1. The user's write timing must comply with this specification. Any violation of this write timing specification may result in permanent damage to the NOR Flash device.
2. Sampled only; not 100% tested.
Write AC Characteristics
Figure 22: WE#-Controlled Program AC Timing (8-Bit Mode)
AAAh PA PA
3rd Cycle 4th Cycle Data Polling READ Cycle
tWC tWC
tAS
tWP
tDS tWHWH1 tDF
tWPH tAH
tCE tCS
tGHWL tOE
tDH
tOH tCH
A[MAX:0]/A-1
CE#
OE#
WE#
DQ[7:0] A0h PD DQ7# DOUT DOUT
Notes: 1. Only the third and fourth cycles of the PROGRAM command are represented. The PRO-GRAM command is followed by checking of the data polling register bit and by a READ operation that outputs the data (DOUT) programmed by the previous PROGRAM com-mand.
2. PA is the address of the memory location to be programmed. PD is the data to be pro-grammed.
3. DQ7 is the complement of the data bit being programmed to DQ7 (See Data Polling Bit [DQ7]).
4. See the following tables for timing details: Read AC Characteristics, WE#-Controlled Write AC Characteristics, and CE#-Controlled Write AC Characteristics.
5. For tWHWH1 timing details, see the Program/Erase Characteristics table.
Write AC Characteristics
Figure 23: WE#-Controlled Program AC Timing (16-Bit Mode)
555h PA PA
3rd Cycle 4th Cycle Data Polling READ Cycle
tWC tWC
tAS
tWP
tDS
tDF tWHWH1
tWPH tAH
tCE tCS
tGHWL tOE
tDH
tOH tCH
A[MAX:0]
CE#
OE#
WE#
DQ[15:0] A0h PD DQ7# DOUT DOUT
Notes: 1. Only the third and fourth cycles of the PROGRAM command are represented. The PRO-GRAM command is followed by checking of the data polling register bit and by a READ operation that outputs the data (DOUT) programmed by the previous PROGRAM com-mand.
2. PA is the address of the memory location to be programmed. PD is the data to be pro-grammed.
3. DQ7 is the complement of the data bit being programmed to DQ7 (See Data Polling Bit [DQ7]).
4. See the following tables for timing details: Read AC Characteristics, WE#-Controlled Write AC Characteristics, and CE#-Controlled Write AC Characteristics.
5. For tWHWH1 timing details, see the Program/Erase Characteristics table.
Write AC Characteristics
Table 33: CE#-Controlled Write AC Characteristics
Parameter
Symbol
Min Typ Max Unit Notes
Legacy JEDEC
WRITE cycle time tWC – 60 – – ns
WE# LOW to CE# LOW tWS tWLEL 0 – – ns
CE# LOW to CE# HIGH tCP tELEH 35 – – ns
Input valid to CE# HIGH tDS tDVEH 30 – – ns 1
CE# HIGH to input transition tDH tEHDX 0 – – ns
CE# HIGH to WE# HIGH tWH tEHWH 0 – – ns
CE# HIGH to CE# LOW tCPH tEHEL 20 – – ns
Address valid to CE# LOW tAS tAVEL 0 – – ns
CE# LOW to address transition tAH tELAX 45 – – ns
OE# HIGH to CE# LOW – tGHEL 0 – – ns
VHH rise or fall time on VPP/WP# – tVHVPP 250 – – ns
Program/erase valid to RY/BY# LOW tBUSY tWHRL – – 90 ns 2
WE# HIGH to OE# valid – tWHQV tAVQV +
30
– – ns
Notes: 1. The user's write timing must comply with this specification. Any violation of this write timing specification may result in permanent damage to the NOR Flash device.
2. Sampled only; not 100% tested.
Write AC Characteristics
Figure 24: CE#-Controlled Program AC Timing (8-Bit Mode)
AAAh PA PA
3rd Cycle 4th Cycle Data Polling tWC
tAS
tCP
tDS
tWHWH1 tCPH
tAH tWS
tGHEL
tDH tWH A[MAX:0]/A-1
WE#
OE#
CE#
DQ[7:0] A0h PD DQ7# DOUT
Notes: 1. Only the third and fourth cycles of the PROGRAM command are represented. The PRO-GRAM command is followed by checking of the data polling register bit.
2. PA is the address of the memory location to be programmed. PD is the data to be pro-grammed.
3. DQ7 is the complement of the data bit being programmed to DQ7 (See Data Polling Bit [DQ7]).
4. See the following tables for timing details: Read AC Characteristics, WE#-Controlled Write AC Characteristics, and CE#-Controlled Write AC Characteristics.
5. For tWHWH1 timing details, see the Program/Erase Characteristics table.
Write AC Characteristics
Figure 25: CE#-Controlled Program AC Timing (16-Bit Mode)
555h PA PA
3rd Cycle 4th Cycle Data Polling tWC
tAS
tCP
tDS tWHWH1
tCPH tAH tWS
tGHEL
tDH tWH A[MAX:0]
WE#
OE#
CE#
DQ[15:0] A0h PD DQ7# DOUT
Notes: 1. Only the third and fourth cycles of the PROGRAM command are represented. The PRO-GRAM command is followed by checking of the data polling register bit.
2. PA is the address of the memory location to be programmed. PD is the data to be pro-grammed.
3. DQ7 is the complement of the data bit being programmed to DQ7 (See Data Polling Bit [DQ7]).
4. See the following tables for timing details: Read AC Characteristics, WE#-Controlled Write AC Characteristics, and CE#-Controlled Write AC Characteristics.
5. For tWHWH1 timing details, see the Program/Erase Characteristics table.
Write AC Characteristics
Figure 26: Chip/Block Erase AC Timing (16-Bit Mode)
555h tWC
tAS
tWP
tDS
tWPH tAH tCS
tGHWL
tDH
tCH A[MAX:0]
CE#
OE#
WE#
DQ[15:0] AAh
2AAh 555h 555h
BAh1 2AAh
555h
55h 80h AAh 55h 10h/
30h
Notes: 1. For a CHIP ERASE command, the address is 555h, and the data is 10h; for a BLOCK ERASE command, the address is BAd, and the data is 30h.
2. BAd is the block address.
3. See the following tables for timing details: Read AC Characteristics, WE#-Controlled Write AC Characteristics, and CE#-Controlled Write AC Characteristics.
4. For tWHWH1 timing details, see the Program/Erase Characteristics table.
Figure 27: Accelerated Program AC Timing
tVHVPP tVHVPP
VHH VIL or VIH VPP/WP#