A29512A Series
Absolute Maximum Ratings*
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of
this device at these or any other conditions above
those indicated in the operational sections of these
specification is not implied or intended. Exposure to
the absolute maximum rating conditions for extended
periods may affect device reliability.
Ambient Operating Temperature . . . . . -55°C to + 125°C
Storage Temperature . . . . . . . . . . . . . . -65°C to + 125°C
Ground to VCC . . . . . . . . . . . . . . . . . . . . . . -2.0V to 7.0V
Output Voltage (Note 1) . . . . . . . . . . . . . . . -2.0V to 7.0V
A9 &
(Note 2) . . . . . . . . . . . . . . . . . . . -2.0V to 12.5V
OE
All other pins (Note 1) . . . . . . . . . . . . . . . . . -2.0V to 7.0V
Output Short Circuit Current (Note 3) . . . . . . . . . . 200mA
Notes:
Operating Ranges
1. Minimum DC voltage on input or I/O pins is -0.5V.
During voltage transitions, inputs may undershoot VSS
to -2.0V for periods of up to 20ns. Maximum DC voltage
on output and I/O pins is VCC +0.5V. During voltage
transitions, outputs may overshoot to VCC +2.0V for
periods up to 20ns.
Commercial (C) Devices
Ambient Temperature (TA) . . . . . . . . . . . . . . 0°C to +70°C
VCC Supply Voltages
VCC for ± 10% devices . . . . . . . . . . . . . . +4.5V to +5.5V
Operating ranges define those limits between which the
functionally of the device is guaranteed.
2. Minimum DC input voltage on A9 pins is -0.5V. During
voltage transitions, A9 and
may overshoot VSS to -
OE
2.0V for periods of up to 20ns. Maximum DC input
voltage on A9 and is +12.5V which may overshoot
OE
to 13.5V for periods up to 20ns.
3. No more than one output is shorted at a time. Duration
of the short circuit should not be greater than one
second.
execute the command. The contents of the register serve
as inputs to the internal state machine. The state machine
outputs dictate the function of the device. The appropriate
device bus operations table lists the inputs and control
levels required, and the resulting output. The following
subsections describe each of these operations in further
detail.
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 location. The
register is composed of latches that store the commands,
along with the address and data information needed to
Table 1. A29512A Device Bus Operations
Operation
A0 – A15
I/O0 - I/O7
WE
H
CE
OE
L
Read
L
AIN
AIN
X
DOUT
DIN
Write
L
H
L
CMOS Standby
TTL Standby
Output Disable
X
X
High-Z
High-Z
High-Z
VCC ± 0.5 V
H
L
X
X
X
H
H
X
Legend:
L = Logic Low = VIL, H = Logic High = VIH, VID = 12.0 ± 0.5V, X = Don't Care, DIN = Data In, DOUT = Data Out, AIN = Address In
PRELIMINARY
(August, 2002, Version 0.0)
4
AMIC Technology, Inc.
AMICC [ AMIC TECHNOLOGY ]
