參數(shù)資料
型號(hào)： AM29F800T-120SI
廠商： SPANSION LLC
元件分類： PROM
英文描述： FLASH 5V PROM, PDSO44
封裝： SOP-44
文件頁(yè)數(shù)： 40/41頁(yè)
文件大?。?/td> 250K
代理商： AM29F800T-120SI
8
Am29F800T/Am29F800B
8/18/97
PR E L IM IN A R Y
Table 1.
Am29F800 User Bus Operations (BYTE = VIH)
Table 2.
Am29F800 User Bus Operations (BYTE = VIL)
Legend:
L = logic 0, H = logic 1, X = Don’t Care. See Characteristics for voltage levels.
Notes:
1. Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 7.
2. Refer to the section on Sector Protection.
Read Mode
The Am29F800 has two control functions which must
be satisfied in order to obtain data at the outputs. CE is
the power control and should be used for device selec-
tion. OE is the output control and should be used to
gate data to the output pins if a device is selected.
Address access time (tACC) is equal to the delay from
stable addresses to valid output data. The chip enable
access time (tCE) is the delay from stable addresses
and stable CE to valid data at the output pins.
The output enable access time is the delay from the
fa lling edge of OE to va lid data at the output
pins (assuming the addresses have been stable for at
least tACC–tOE time).
Standby Mode
There are two ways to implement the standby mode on
the Am29F800 device, both using the CE pin.
A CMOS standby mode is achieved with the CE input
held at VCC ± 0.3V. Under this condition the current is
typically reduced to less than 5
A. A TTL standby
mode is achieved with the CE pin held at VIH. Under
this condition the current is typically reduced to 1 mA.
Operation
CE
OE
WE
A0
A1
A6
A9
DQ0–DQ15
RESET
Autoselect, AMD Manuf. Code (Note 1)
L
H
L
VID
Code
H
Autoselect Device Code (Note 1)
L
H
L
VID
Code
H
Read
L
X
A0A1A6A9
DOUT
H
Standby
H
XXXX
XX
HIGH Z
H
Output Disable
L
H
X
HIGH Z
H
Write
L
H
L
A0
A1
A6
A9
DIN
H
Verify Sector Protect (Note 2)
L
H
L
H
L
VID
Code
H
Temporary Sector Unprotect
X
XXXX
XX
X
VID
Hardware Reset
X
XXXX
XX
HIGH Z
L
Operation
CE
OE
WE
A0
A1
A6
A9
DQ0–DQ7 DQ8–DQ15 RESET
Autoselect, AMD Manuf. Code
(Note 1)
L
H
LLL
VID
Code
HIGH Z
H
Autoselect Device Code (Note 1)
L
H
L
VID
Code
HIGH Z
H
Read
L
X
A0A1A6A9
DOUT
HIGH Z
H
Standby
H
X
XXXXX
HIGH Z
H
Output Disable
L
H
XXXX
HIGH Z
H
Write
L
H
L
A0
A1
A6
A9
DIN
HIGH Z
H
Verify
Sector Protect (Note 2)
L
HLHL
VID
Code
HIGH Z
H
Temporary
Sector Unprotect
XX
XXXXX
X
HIGH Z
VID
Hardware Reset
X
XXXXX
HIGH Z
L
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