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A29L004 View Datasheet(PDF) - AMIC Technology

Part NameDescriptionManufacturer
A29L004 512K X 8 Bit CMOS 3.0 Volt-only, Boot Sector Flash Memory AMICC
AMIC Technology AMICC
A29L004 Datasheet PDF : 39 Pages
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A29L004 Series
RESET : Hardware Reset Pin (N/A on 32-pin PLCC &
(s)TSOP packages)
The RESET pin provides a hardware method of resetting
the device to reading array data. When the system drives
the RESET pin low for at least a period of tRP, the device
immediately terminates any operation in progress, tristates
all data output pins, and ignores all read/write attempts for
the duration of the RESET pulse. The device also resets
the internal state machine to reading array data. The
operation that was interrupted should be reinitiated once
the device is ready to accept another command sequence,
to ensure data integrity.
Current is reduced for the duration of the RESET pulse.
When RESET is held at VSS ± 0.3V, the device draws
CMOS standby current (ICC4 ). If RESETis held at VIL but
not within VSS ± 0.3V, the standby current will be greater.
The RESET pin may be tied to the system reset circuitry. A
system reset would thus also reset the Flash memory,
enabling the system to read the boot-up firmware from the
Flash memory.
If RESET is asserted during a program or erase operation,
the RY/ BY pin remains a “0” (busy) until the internal reset
operation is complete, which requires a time tREADY (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 executing (RY/ BY pin is “1”), the reset
operation is completed within a time of tREADY (not during
Embedded Algorithms). The system can read data tRH after
the RESET pin return to VIH.
Refer to the AC Characteristics tables for RESET
parameters and diagram.
PRELIMINARY (October, 2002, Version 0.0)
7
AMIC Technology, Corp.
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