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AM41DL1644DB35IT 데이터시트(Datasheet) 15 Page - Advanced Micro Devices

부품명 AM41DL1644DB35IT
상세내용  16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 4 Mbit (512 K x 8-Bit/256 K x 16-Bit) Static RAM
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제조사  AMD [Advanced Micro Devices]
홈페이지  http://www.amd.com
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14
Am41DL16x4D
P R E L IMINARY
Table 4.
Device Bus Operations—Flash Byte Mode, CIOf = V
IL; SRAM Byte Mode, CIOs = VSS
Legend: L = Logic Low = V
IL, H = Logic High = VIH, VID = 8.5–12.5 V, VHH = 9.0 ± 0.5 V, X = Don’t Care, SA = SRAM Address
Input, Byte Mode, SADD = Flash Sector Address, A
IN = Address In (for Flash Byte Mode, DQ15 = A-1), DIN = Data In, DOUT =
Data Out, DNU = Do Not Use
Notes:
1. Other operations except for those indicated in this column are inhibited.
2. Do not apply CE#f = V
IL, CE1#s = VIL and CE2s = VIH at the same time.
3. Don’t care or open LB#s or UB#s.
4. If WP#/ACC = VIL , the boot sectors will be protected. If WP#/ACC = VIH the boot sectors protection will be removed.
If WP#/ACC = V
ACC (9V), the program time will be reduced by 40%.
5. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “The autoselect
mode provides manufacturer and device identification, and sector protection verification, through identifier codes output on
DQ7–DQ0. The autoselect codes can be accessed in-system through the command register. Refer to the Autoselect Command
Sequence section for more information.Sector/Sector Block Protection and Unprotection”.
6. If WP#/ACC = V
IL, the two outermost boot sectors remain protected. If WP#/ACC = VIH, the two outermost boot sector protection
depends on whether they were last protected or unprotected using the method described in “The autoselect mode provides
manufacturer and device identification, and sector protection verification, through identifier codes output on DQ7–DQ0. The
autoselect codes can be accessed in-system through the command register. Refer to the Autoselect Command Sequence section
for more information.Sector/Sector Block Protection and Unprotection”. If WP#/ACC = VHH, all sectors will be unprotected.
Operation
(Notes 1, 2)
CE#f CE1#s CE2s OE# WE#
SA
Addr.
LB#s
(Note 3)
UB#s
(Note 3)
RESET#
WP#/ACC
(Note 4)
DQ7–
DQ0
DQ15–
DQ8
Read from Flash
L
HX
LH
X
A
IN
XX
H
L/H
D
OUT
High-Z
XL
Write to Flash
L
HX
HL
X
A
IN
XX
H
(Note 3)
D
IN
High-Z
XL
Standby
VCC ±
0.3 V
HX
XX
X
X
X
X
VCC ±
0.3 V
H
High-Z
High-Z
XL
Output Disable
H
L
H
H
H
SA
X
DNU
DNU
H
L/H
High-Z
High-Z
Flash Hardware
Reset
X
HX
X
X
X
X
X
X
L
L/H
High-Z
High-Z
XL
Sector Protect
(Note 5)
L
HX
HL
X
SADD,
A6 = L,
A1 = H,
A0 = L
XX
V
ID
L/H
D
IN
X
XL
Sector Unprotect
(Note 5)
L
HX
HL
X
SADD,
A6 = L,
A1 = H,
A0 = L
XX
V
ID
(Note 6)
D
IN
X
XL
Temporary
Sector Unprotect
X
HX
XX
X
A
IN
XX
V
ID
(Note 6)
D
IN
High-Z
XL
Read from SRAM
H
L
H
L
H
SA
A
IN
XX
H
X
D
OUT
High-Z
Write to SRAM
H
L
H
X
L
SA
A
IN
XX
H
X
D
IN
High-Z




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