MX28F2000P Macronix International, MX28F2000P Datasheet - Page 7

• Manufacturer Part Number: MX28F2000P
• Description: 2M-BIT [256K x 8] CMOS FLASH MEMORY
• Manufacturer: Macronix International

COMMAND DEFINITIONS
When low voltage is applied to the VPP pin, the con-
tents of the command register default to 00H, enabling
read-only operation.
Placing high voltage on the VPP pin enables read/write
operations. Device operations are selected by writing
specific data patterns into the command register. Ta-
ble 1 defines these MX28F2000P register commands.
Table 2 defines the bus operations of MX28F2000P.
TABLE 2. MX28F2000P BUS OPERATIONS
NOTES:
1. VPPL may be grounded, a no-connect with a resistor tied
2. Manufacturer and device codes may also be accessed
P/N: PM0380
OPERATION
READ-ONLY
READ/WRITE
to ground, or < VCC + 2.0V. VPPH is the programming
voltage specified for the device. When VPP = VPPL,
memory contents can be read but not written or erased.
via a command register write sequence. Refer to Table
1. All other addresses don't care.
Read
Output Disable
Standby
Read Silicon ID (Mfr)(2)
Read Silicon ID (Device)(2)
Read
Standby(5)
Write
VPP(1)
VPPL
VPPL
VPPL
VPPL
VPPL
VPPH
VPPH
VPPH
7
A0
A0
X
X
VIL
VIH
A0
X
A0
3. VID is the Silicon-ID-Read high voltage.(11.5V to 13v)
4. Read operations with VPP = VPPH may access array
5. With VPP at high voltage, the standby current equals ICC
6. Refer to Table 1 for valid Data-In during a write operation.
7. X can be VIL or VIH.
data or Silicon ID codes.
+ IPP (standby).
A9
A9
X
X
VID(3)
VID(3)
A9
X
A9
CE
VIL
VIL
VIH
VIL
VIL
VIL
VIH
VIL
MX28F2000P
X
OE
VIL
VIH
X
VIL
VIL
VIL
VIH
WE
VIH
VIH
X
VIH
VIH
X
VIL
VIH
REV. 1.5, OCT 29, 1998
DQ0-DQ7
Data Out
Tri-State
Tri-State
Data = C2H
Data = 2AH
Data Out(4)
Tri-State
Data In(6)