EN29F002AB-45JC EON [Eon Silicon Solution Inc.], EN29F002AB-45JC Datasheet - Page 6

• Manufacturer Part Number: EN29F002AB-45JC
• Description: 2 Megabit (256K x 8-bit) Flash Memory
• Manufacturer: EON [Eon Silicon Solution Inc.]

USER MODE DEFINITIONS
Reset Mode
EN29F002A features a Reset mode that resets the program and erase operation immediately to
read mode. If reset (
program or erase which was terminated should be repeated since data will be corrupted. This pin is
not available for EN29F002AN.
Standby Mode
The EN29F002A / EN29F002AN has a CMOS-compatible standby mode which reduces the current
to < 1µA (typical). It is placed in CMOS-compatible standby when
V
which reduces the maximum V
and
(n/a for EN29F002AN). When
standby with current typically reduced to < 1 µA. When
compatible standby with current reduced to < 1mA. When in standby modes, the outputs are in a
high-impedance state independent of the
Read Mode
The EN29F002A / EN29F002AN has two control functions which must be satisfied in order to obtain
data at the outputs. Chip Enable ( CE ) is the power control and should be used for device selection.
Output Enable ( OE ) is the output control and should be used to gate data to the output pins,
provided the device is selected. Read is selected when both CE and OE pins are held at V
the
valid output data. Assuming that addresses are stable, chip enable access time (t
delay from stable CE to valid data at output pins. Data is available at the outputs after output
enable access time (t
addresses have been stable for at least t
Output Disable Mode
When the CE or
EN29F002AN is disabled. The output pins are placed in a high impedance state.
Auto Select Identification Mode
The manufacturer and device type can be identified by hardware or software operations. This mode
allows applications or programming equipment automatically matching the device with its
corresponding interface characteristics.
To activate the Auto Select Identification mode, the programming equipment must force 11.0 V ±
0.5V on address line A9 of the EN29F002AT/B. Two identifier bytes can then be sequenced from the
device outputs by toggling address lines A0 and A8 from V
The manufacturer and device identification may also be read via the command register. By following
the command sequence referenced in the Command Definition Table (Table 5). This method is
desirable for in-system identification (using only + 5.0V).
When A0 = A1 = A6 = V
= 7F, 1C (hex) to identify EON . When A0 = V
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
CC
W E
± 0.5 V (
RESET
pin held at V
pins are at V
CE
pin only, for EN29F002AN). The device also has a TTL-compatible standby mode
OE
RESET
IH
OE
. Address access time (t
pin is at a logic high level (V
IL
IH
) from the falling edge of OE , assuming the CE has been LOW and
and by toggling A8 from V
.
= L) is executed when program or erase operation were in progress, the
Another method of entering standby mode uses only the
CC
RESET
current to < 1mA. It is placed in TTL-compatible standby when
pin is at V
ACC
OE
- t
input.
OE
Rev. A, Issue Date: 2003/03/26
.
IH
ACC
6
, A1 = A6 = V
SS
IL
) is equal to the delay from stable addresses to
to V
± 0.3V, the device enters CMOS-compatible
©2003 Eon Silicon Solution, Inc., www.essi.com.tw
RESET
IH
IH,
EN29F002A / EN29F002AN
IL
), the output from the EN29F002A /
the Manufacturer ID can be read as Eon
to V
IL,
IH
pin is at V
.
and by toggling A8 from V
CE
and the
IL
, the device enters TTL-
RESET
CE
) is equal to the
pins are at
RESET
IL
to V
IL
with
CE
pin
IH
,