MX28F1000P Ver la hoja de datos (PDF) - Macronix International
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MX28F1000P Datasheet PDF : 33 Pages
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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
VPP(1) A0
A9
CE
OE
WE DQ0-DQ7
READ-ONLY Read
VPPL A0
A9
VIL
VIL
VIH Data Out
Output Disable
VPPL X
X
VIL
VIH
VIH Tri-State
Standby
VPPL X
X
VIH
X
X
Tri-State
Read Silicon ID (Mfr)(2)
VPPL VIL
VID(3) VIL
VIL
VIH Data = C2H
Read Silicon ID (Device)(2) VPPL VIH
VID(3) VIL
VIL
VIH Data = 1AH
READ/WRITE Read
VPPH A0
A9
VIL
VIL
VIH Data Out(4)
Standby(5)
VPPH X
X
VIH
X
X
Tri-State
Write
VPPH A0
A9
VIL
VIH
VIL
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
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