MX28F1000P
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 MX28F1000P register commands.
Table 2 defines the bus operations of MX28F1000P.
TABLE 2. MX28F1000P BUS OPERATIONS
OPERATION
READ-ONLY
Read
Output Disable
Standby
Read Silicon ID (Mfr)(2)
Read Silicon ID (Device)(2)
READ/WRITE
Read
Standby(5)
Write
VPP(1)
VPPL
VPPL
VPPL
VPPL
VPPL
VPPH
VPPH
VPPH
A0
A0
X
X
VIL
VIH
A0
X
A0
A9
A9
X
X
VID(3)
VID(3)
A9
X
A9
CE
VIL
VIL
VIH
VIL
VIL
VIL
VIH
VIL
OE
VIL
VIH
X
VIL
VIL
VIL
X
VIH
WE
VIH
VIH
X
VIH
VIH
VIH
X
VIL
DQ0-DQ7
Data Out
Tri-State
Tri-State
Data = C2H
Data = 1AH
Data Out(4)
Tri-State
Data In(6)
NOTES:
1. VPPL may be grounded, a no-connect with a resistor tied
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.
2. Manufacturer and device codes may also be accessed
via a command register write sequence. Refer to Table
1. All other addresses are don't care.
3. VID is the Silicon-ID-Read high voltage.(11.5V to 13v)
4. Read operations with VPP = VPPH may access array
data or Silicon ID codes.
5. With VPP at high voltage, the standby current equals ICC
+ IPP (standby).
6. Refer to Table 1 for valid Data-In during a write operation.
7. X can be VIL or VIH.
P/N: PM0340
REV. 1.6, JAN. 19, 1999
7
MCNIX [ MACRONIX INTERNATIONAL ]
