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AM41PDS3228DB10IS Datasheet(PDF) 11 Page - Advanced Micro Devices

Part # AM41PDS3228DB10IS
Description  32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only, Simultaneous Operation, Page Mode Flash Memory and 8 Mbit (1 M x 8-Bit/512 K x 16-Bit) Static RAM
PDF  59 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM41PDS3228DB10IS Datasheet(HTML) 11 Page - Advanced Micro Devices

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10
Am41PDS3228D
May 13, 2002
P R E L IMINARY
MCP DEVICE BUS OPERATIONS
This section describes the requirements and use of
the device bus operations, which are initiated through
the internal command register. The command register
itself does not occupy any addressable memory loca-
ti on. The r egi s t er i s a la tc h us ed to s t or e the
commands, along with the address and data informa-
tion needed to execute the command. The contents of
the register serve as inputs to the internal state ma-
chine. The state machine outputs dictate the function
of the device. Tables 1–2 list the device bus opera-
tions, the inputs and control levels they require, and
the resulting output. The following subsections de-
scribe each of these operations in further detail.
Table 1.
Device Bus Operations—SRAM Word Mode, CIOs = V
CC
Legend: L = Logic Low = V
IL, H = Logic High = VIH, VID = 9–11 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, DIN = Data In, DOUT = Data Out
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 = V
IL , 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 “Sector/Sector Block Protection
and Unprotection” section.
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 “Sector/Sector Block Protection and Unprotection”. If
WP#/ACC = V
HH, 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
D
OUT
XL
Write to Flash
L
HX
HL
X
A
IN
XX
H
(Note 4)
D
IN
D
IN
XL
Standby
V
CC ±
0.3 V
HX
XX
X
X
X
X
V
CC ±
0.3 V
H
High-Z
High-Z
XL
Output Disable
L
L
H
HH
X
X
L
X
H
L/H
High-Z
High-Z
HH
X
X
X
L
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 = H,
A1 = H,
A0 = L
XX
V
ID
(Note 6)
D
IN
X
XL
Temporary Sector
Unprotect
X
HX
XX
X
X
X
X
V
ID
(Note 6)
D
IN
High-Z
XL
Read from SRAM
H
L
H
L
H
X
A
IN
LL
HX
D
OUT
D
OUT
H
L
High-Z
D
OUT
LH
D
OUT
High-Z
Write to SRAM
H
L
H
X
L
X
A
IN
LL
HL/H
D
IN
D
IN
H
L
High-Z
D
IN
LH
D
IN
High-Z



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