AM29DL16XC Datasheet, PDF (13/51 Pages) Advanced Micro Devices – 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory

PRELIMINARY
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
ment to automatically match a device to be
programmed with its corresponding programming al-
gorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires V_ID (8.5 V to 12.5 V) on address pin A9.
Address pins A6, A1, and A0 must be as shown in
Table 7. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 3–6). Table 7
shows the remaining address bits that are don’t care.
When all necessary bits have been set as required,
the programming equipment may then read the corre-
sponding identifier code on DQ7–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 14. This method
does not require V_ID. Refer to the Autoselect Com-
mand Sequence section for more information.
Table 7. Am29DL16xC Autoselect Codes, (High Voltage Method)
Description
A19
to
CE# OE# WE# A12
Manufacturer ID: AMD
L L H BA
Device ID: Am29DL162C L L H BA
Device ID: Am29DL163C L L H BA
Device ID: Am29DL164C L L H BA
Sector Protection
Verification
L L H SA
SecSi Sector Indicator Bit
(DQ7)
L
L
H
BA
A11
A8
A5
DQ8 to DQ15
to
to
to
BYTE# BYTE#
A10 A9 A7 A6 A2 A1 A0 = V_IH = V_IL
X V_ID X L X L L
X
X
DQ7
to
DQ0
01h
X V_ID X L X L H 22h
X
2Dh (T), 2Eh (B)
X V_ID X L X L H 22h
X
28h (T), 2Bh (B)
X V_ID X L X L H 22h
X
33h (T), 35h (B)
X V_ID X L X H L
X
X
01h (protected),
00h (unprotected)
X V_ID X L X H H
X
80h (factory locked),
X
00h (not factory
locked)
Legend: T = Top Boot Block, B = Bottom Boot Block, L = Logic Low = V_IL, H = Logic High = V_IH, BA = Bank Address, SA =
Sector Address, X = Don’t care.
Am29DL16xC
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