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PDF Am29LV800B-90R Data sheet ( Hoja de datos )
| Número de pieza | Am29LV800B-90R | |
| Descripción | 8 Megabit (1/048/576 x 8-Bit/524/288 x 16-Bit) CMOS 3.0 Volt-only/ Sectored Flash Memory | |
| Fabricantes | Advanced Micro Devices | |
| Logotipo |  |
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PRELIMINARY
Am29LV800T/Am29LV800B
8 Megabit (1,048,576 x 8-Bit/524,288 x 16-Bit)
CMOS 3.0 Volt-only, Sectored Flash Memory
DISTINCTIVE CHARACTERISTICS
s Single power supply operation
— Extended voltage range: 2.7 to 3.6 volt read and
write operations for battery-powered
applications
— Standard voltage range: 3.0 to 3.6 volt read and
write operations and for compatibility with high
performance 3.3 volt microprocessors
s High performance
— Extended voltage range: access times as fast as
100 ns
— Standard voltage range: access times as fast as
90 ns
s Ultra low power consumption
— Automatic Sleep Mode: 200 nA typical
— Standby mode: 200 nA typical
— Read mode: 2 mA/MHz typical
— Program/erase mode: 20 mA typical
s Flexible sector architecture
— One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and
fifteen 64 Kbyte sectors (byte mode)
— One 8 Kword, two 4 Kword, one 16 Kword, and
fifteen 32 Kword sectors (word mode)
— Supports control code and data storage on a
single device
— Sector Protection features:
A hardware method of locking a sector to
prevent any program or erase operations within
that sector
Temporary Sector Unprotect feature allows code
changes in previously locked sectors
s Top or bottom boot block configurations
available
s Embedded Algorithms
— Embedded Erase algorithms automatically
preprogram and erase the entire chip or any
combination of designated sectors
— Embedded Program algorithms automatically
write and verify bytes or words at specified
addresses
s Minimum 100,000 write cycle guarantee per
sector
s Package options
— 48-pin TSOP
— 44-pin SO
s Compatibility with JEDEC standards
— Pinout and software compatible with single-
power supply Flash
— Superior inadvertent write protection
s Data Polling and toggle bits
— Provides a software method of detecting
program or erase operation completion
s Ready/Busy pin (RY/BY)
— Provides a hardware method of detecting
program or erase cycle completion
s Erase suspend/resume commands
— Suspends the erase operation to read data from
or program data to another sector, then resumes
the erase operation
s Hardware reset pin (RESET)
— Hardware method to reset the device to the read
mode
This document contains information on a product under development at Advanced Micro Devices. The information
Publication# 20478 Rev: D Amendment/0
is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed
Issue Date: November 1997
product without notice.
Refer to AMD’s Website (www.amd.com) for the latest information.
1 page  
CONNECTION DIAGRAMS
PRELIMINARY
SO
RY/BY
A18
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
VSS
OE
DQ0
DQ8
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44 RESET
43 WE
42 A8
41 A9
40 A10
39 A11
38 A12
37 A13
36 A14
35 A15
34 A16
33 BYTE
32 VSS
31 DQ15/A-1
30 DQ7
29 DQ14
28 DQ6
27 DQ13
26 DQ5
25 DQ12
24 DQ4
23 VCC
20478D-4
Am29LV800T/Am29LV800B
5
5 Page 
PRELIMINARY
Autoselect
The Autoselect mode allows the reading out of a binary
code from the device and will identify its manufacturer
and type. The intent is to allow programming equipment
to automatically match the device to be programmed
with its corresponding programming algorithm. The
Autoselect command may also be used to check the
status of write-protected sectors (see Table 3). This
mode is functional over the entire temperature range of
the device.
To activate this mode, the programming equipment
must force VID (11.5–12.5 volts) on address pin A9.
Two identifier bytes may then be sequenced from the
device outputs by toggling address A0 from VIL to VIH.
All addresses are don’t cares except A0, A1, and A6
(see Table 3).
The manufacturer and device codes may also be read
via the command register, for instances when the
Am29LV800 is erased or programmed in a system
without access to high voltage on the A9 pin. The
command sequence is illustrated in Table 6.
Byte 0 (A0 = VIL) represents the manufacturer’s code
and byte 1 (A0 = VIH) the device identifier code. These
two bytes are given for the Am29LV800 in Table 3. All
identifiers for manufacturer and device exhibit odd
parity with DQ7 defined as the parity bit. In order to
read the proper device codes when executing Autose-
lect, A1 must be VIL (see Table 3). For device identifica-
tion in word mode (BYTE = VIH), DQ9 and DQ13 are
equal to ‘1’ and DQ8, DQ10–12, DQ14, and DQ15 are
equal to ‘0’.
If BYTE = VIH (for word mode), the device code is 22DAh
(for top boot block) or 225Bh (for bottom boot block). If
BYTE = VIL (for byte mode), the device code is DAh (for
top boot block) or 5Bh (for bottom boot block).
In order to determine which sectors are write protected,
A1 must be at VIH while running through the sector
addresses. If the selected sector is protected, the
device outputs a ‘1’ on DQ0.
Table 3. Autoselect/Sector Protection Codes
Type
Code
DQ DQ DQ DQ DQ DQ DQ DQ
Mode A12–A18 A6 A1 A0 (HEX) DQ8–DQ15 7 6 5 4 3 2 1 0
Manufacturer Code:
AMD
X
L L L 01h
High-Z
00000001
DQ9 = 1,
29LV800 Device
(Top Boot Block)
Word
X
22DAh DQ13 = 1,
L LH
Others = 0 1 1 0 1 1 0 1 0
Byte
X
DAh High-Z
DQ9 = 1,
29LV800 Device
Word
(Bottom Boot Block)
X
225Bh DQ13 = 1,
L LH
Others = 0 0 1 0 1 1 0 1 1
Byte
X
5Bh High-Z
Sector Protection
Set Sector
Addresses
L
H
L
01h*
X
00000001
X = Don’t care.
* Outputs 01h at protected sector addresses.
Am29LV800T/Am29LV800B
11
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