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參數(shù)資料
| 型號(hào)： | AM50DL128CG |
| 英文描述： | 2 x 64 Mbit (8 M x 8-Bit/4 M x 16-Bit) CMOS and 64 Mbit (2 M x 16-Bit) Pseudo Static RAM (Preliminary) |
| 中文描述： | 2 × 64兆位（8米× 8位/ 4米× 16位）的CMOS和64兆位（2米× 16位），偽靜態(tài)存儲(chǔ)器（初步） |
| 文件頁數(shù)： | 13/70頁 |
| 文件大?。?/td> | 1042K |
| 代理商： | AM50DL128CG |
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12
Am50DL9608G
May 19, 2003
P R E L I M I N A R Y
vice requires standard access time (t
CE
) for read ac-
cess when the device is in either of these standby
modes, before it is ready to read data.
If the device is deselected during erasure or program-
ming, the device draws active current until the
operation is completed.
I
CC3
f in the table represents the standby current speci-
fication.
Automatic Sleep Mode
The automatic sleep mode minimizes Flash device en-
ergy consumption. The device automatically enables
this mode when addresses remain stable for t
ACC
+
30 ns. The automatic sleep mode is independent of
the CE#f, WE#, and OE# control signals. Standard ad-
dress access timings provide new data when ad-
dresses are changed. While in sleep mode, output
data is latched and always available to the system.
I
CC5
f in the table represents the automatic sleep mode
current specification.
RESET#: Hardware Reset Pin
The RESET# pin provides a hardware method of re-
setting the device to reading array data. When the RE-
SET# pin is driven low for at least a period of t
RP
, the
device immediately terminates any operation in
progress, tristates all output pins, and ignores all
read/write commands for the duration of the RESET#
pulse. The device also resets the internal state ma-
chine to reading array data. The operation that was in-
terrupted should be reinitiated once the device is
ready to accept another command sequence, to en-
sure data integrity.
Current is reduced for the duration of the RESET#
pulse. When RESET# is held at V
SS
±0.3 V, the device
draws CMOS standby current (I
CC4
f). If RESET# is
held at V
IL
but not within V
SS
±0.3 V, the standby cur-
rent will be greater.
The RESET# pin may be tied to the system reset cir-
cuitry. A system reset would thus also reset the Flash
memory, enabling the system to read the boot-up firm-
ware from the Flash memory.
If RESET# is asserted during a program or erase op-
eration, the RY/BY# pin remains a “0” (busy) until the
internal reset operation is complete, which requires a
time of t
READY
(during Embedded Algorithms). The
system can thus monitor RY/BY# to determine
whether the reset operation is complete. If RESET# is
asserted when a program or erase operation is not ex-
ecuting (RY/BY# pin is “1”), the reset operation is com-
pleted within a time of t
READY
(not during Embedded
Algorithms). The system can read data t
RH
after the
RESET# pin returns to V
IH
.
Refer to the Flash AC Characteristics tables for RE-
SET# parameters and to Figure 15 for the timing dia-
gram.
Output Disable Mode
When the OE# input is at V
IH
, output from the device is
disabled. The output pins are placed in the high
impedance state.
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| AM50DL128CH | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Am50DL128CH - Stacked Multi-Chip Package (MCP) Flash Memory and SRAM |
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