Am49DL640BG

The Am29DL640G is a 64 megabit, 3.0 volt-only flash memory device, organized as 4,194,304 words of 16 bits each or 8,388,608 bytes of 8 bits each. Word mode data appears on DQ15DQ0; byte mode data appears on DQ7DQ0. The device is designed to be programmed in-system with the standard 3.0 volt V_CC supply, and can also be programmed in standard EPROM programmers.

The device is available with an access time of 70 or 85 ns and is offered in a 73-ball FBGA package. Standard control pins-chip enable (CE#f), write enable (WE#), and output enable (OE#)-control normal read and write operations, and avoid bus contention issues.

The device requires only a single 3.0 volt power supply for both read and write functions. Internally generated and regulated voltages are provided for the program and erase operations.

Storage Temperature
Plastic Packages . . . . . . . . . . . . . . . 55°C to +125°C
Ambient Temperature
with Power Applied . . . . . . . . . . . . . . 40°C to +85°C
Voltage with Respect to Ground
V_CCf, V_CCs (Note 1) . . . . . . . . . . . .0.5 V to +4.0 V
RESET# (Note 2) . . . . . . . . . . . .0.5 V to +12.5 V
WP#/ACC . . . . . . . . . . . . . . . . . .0.5 V to +10.5 V
All other pins (Note 1) . . . . . . 0.5 V to VCC +0.5 V
Output Short Circuit Current (Note 3) . . . . . . 200 mA
Notes:
1. Minimum DC voltage on input or I/O pins is 0.5 V.
During vol tage transitions, input or I/O pins ma  overshoot V_SS to 2.0 V for periods of up to 20 ns. Maximum DC voltage on input or I/O pins is V_CC +0.5 V. See Figure 7. During voltage transitions, input or I/O pins may overshoot to V_CC +2.0 V for periods up to 20 ns. See Figure 8.

2. Minimum DC input voltage on pins RESET#, and WP#/ACC is 0.5 V. During voltage transitions, WP#/ACC, and RESET# may overshoot VSS to 2.0 V for periods of up to 20 ns. See Figure 7. Maximum DC input voltage on pin RESET# is +12.5 V which may overshoot to +14.0 V for periods up to 20 ns. Maximum DC input voltage on WP#/ACC is +9.5 V which may overshoot to +12.0 V for periods up to 20 ns.

3. No more than one output may be shorted to ground at a time. Duration of the short circuit should not be greater
than one second.

Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This
is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections of this data sheet is not implied. Exposure of the device to absolute maximum rating conditions for extended periods may affect device reliability.