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W28F641B Datasheet, PDF (16/31 Pages) Winbond – 64MBIT (4MBIT × 16) PAGE MODE DUAL WORK FLASH MEMORY
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W28F641B/T
4. ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings*
Operating Temperature
During Read, Erase and Program ..................................................................................... -40°C to +85°C(1)
Storage Temperature
During under Bias .............................. .................................................................................. -40°C to +85°C
During non Bias .............................. .................................................................................. .. -65°C to +125°C
Voltage On Any Pin
(except VDD and VPP) ......... .......................................................................................... -0.5V to VDD +0.5V(2)
VDD and VDDQ Supply Voltage......................... ........................................................................ -0.2V to +3.9V(2)
VPP Supply Voltage..................................................................................................... .... -0.2V to +12.6V(2,3,4)
Output Short Circuit Current............. .............................................................................. ...................100 mA(5)
*WARNING: Stressing the device beyond the "Absolute Maximum Ratings" may cause permanent damage. These are stress
ratings only. Operation beyond the "Operating Conditions" is not recommended and extended exposure beyond
the "Operating Conditions" may affect device reliability.
Notes:
1. Operating temperature is for extended temperature product defined by this specification.
2. All specified voltages are with respect to VSS. Minimum DC voltage is -0.5V on input/output pins and -0.2V on VDD and VPP
pins. During transitions, this level may undershoot to -2.0V for periods <20 nS. Maximum DC voltage on input/output pins is
VDD +0.5V, which, during transitions, may overshoot to VDD +2.0V for periods <20 nS.
3. Maximum DC voltage on VPP may overshoot to +13.0V for periods <20 nS.
4. VPP erase/program voltage is normally 2.7V to 3.6V. Applying 11.7V to 12.3V to VPP during erase/program can be done for a
maximum of 1,000 cycles on the main blocks and 1,000 cycles on the parameter blocks. VPP may be connected to 11.7V to
12.3V for a total of 80 hours maximum.
5. Output shorted for no more than one second. No more than one output shorted at a time.
Operating Conditions
PARAMETER
SYM. MIN. TYP. MAX. UNIT NOTE
Operating Temperature
TA -40
+25
+85
°C
VDD Supply Voltage
VDD 2.7
3.0
3.6
V
1
I/O Supply Voltage
VDDQ 2.7
3.0
3.6
V
1
VPP Voltage when Used as a Logic Control
VPPH1 1.65
3.0
3.6
V
1
VPP Supply Voltage
VPPH2 11.7
12
12.3
V
1, 2
Main Block Erase Cycling: VPP = VPPH1
100,000
Cycles
Parameter Block Erase Cycling: VPP = VPPH1
100,000
Cycles
Main Block Erase Cycling: VPP = VPPH2, 80 hrs.
1,000 Cycles
Parameter Block Erase Cycling: VPP = VPPH2, 80 hrs.
1,000 Cycles
Maximum VPP hours at VPPH2
80
Hours
Notes:
1. See DC Characteristics tables for voltage range-specific specification.
2. Applying VPP = 11.7V to 12.3V during a erase or program can be done for a maximum of 1,000 cycles on the main blocks and
1,000 cycles on the parameter blocks. A permanent connection to VPP = 11.7V to 12.3V is not allowed and can cause
damage to the device.
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