參數(shù)資料
型號(hào)： W28F321TB70L
廠商： WINBOND ELECTRONICS CORP
元件分類： PROM
英文描述： 2M X 16 FLASH 1.8V PROM, 70 ns, PBGA48
封裝： 7 X 7 MM, 0.75 MM PITCH, TFBGA-48
文件頁(yè)數(shù)： 27/28頁(yè)
文件大?。?/td> 372K
代理商： W28F321TB70L
W28F321BB/TB
- 8 -
Figure 3. OTP Block Address Map for OTP Program (The area outside 80H
88H cannot be used.)
Table 5. Bus Operations (1, 2)
MODE
NOTE
#RESET #CE
#OE #WE
ADDRESS
VPP
DQ0
15
Read Array
6
VIH
VIL
VIH
X
DOUT
Output Disable
VIH
VIL
VIH
X
High Z
Standby
VIH
X
High Z
Reset
3
VIL
X
High Z
Read Identifier Codes/OTP
6
VIH
VIL
VIH
See
Table 3, 4
X
See
Table 3, 4
Read Query
6, 7
VIH
VIL
VIH
See
Appendix
X
See
Appendix
Write
4, 5, 6
VIH
VIL
VIH
VIL
X
DIN
Notes:
1. Refer to DC Characteristics. When VPP ≤ VPPLK, memory contents can be read, but cannot be altered.
2. X can be VIL or VIH for control pins and addresses, and VPPLK or VPPH1/2 for VPP. See DC Characteristics for VPPLK and VPPH1/2
voltages.
3. #RESET at VSS ±0.2V ensures the lowest power consumption.
4. Command writes involving block erase, (page buffer) program or OTP program are reliably executed when VPP = VPPH1/2 and
VDD = 2.7V to 3.6V.
Command writes involving full chip erase are reliably executed when VPP = VPPH1 and VDD = 2.7V to 3.6V.
5. Refer to Table 6 for valid DIN during a write operation.
6. Never hold #OE low and #WE low at the same timing.
7. Refer to Appendix for more information about query code.
Reserved for Future Implementation
(DQ15
DQ2)
Factory Programmed Area
Customer Programmable Area
Customer programmable Area Lock Bit (DQ1)
Factory programmed Area Lock Bit (DQ0)
[A20-A0]
000088H
000085H
000084H
000081H
000080H
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