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PDF LE28CV1001T-15 Data sheet ( Hoja de datos )

Número de pieza LE28CV1001T-15
Descripción 1MEG (131072 words x 8 bits) Flash Memory
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! LE28CV1001T-15 Hoja de datos, Descripción, Manual

Ordering number : EN*5409
CMOS LSI
LE28CV1001M, T-12/15
1MEG (131072 words × 8 bits) Flash Memory
Overview
The LE28CV1001M, T Series ICs are 1 MEG flash
memory products that feature a 131072-word × 8-bit
organization and 3.3 V single-voltage power supply
operation. CMOS peripheral circuits are adopted for high
speed, low power, and ease of use. A 128-byte page
rewrite function provides rapid data rewriting.
Features
• Highly reliable 2-layer polysilicon CMOS flash
EEPROM process
• Read and write operations using a 5 V single-voltage
power supply
• Fast access time: 120 and 150 ns
• Low power dissipation
— Operating current (read): 12 mA (maximum)
— Standby current: 15 µA (maximum)
• Highly reliable read/write
—Erase/write cycles: 104/103 cycles
—Data retention time: 10 years
• Address and data latches
• Fast page rewrite operation
— 128 bytes per page
— Byte/page rewrite time: 5 ms (typical)
— Chip rewrite time: 5 s (typical)
• Automatic rewriting using internally generated Vpp
• Rewrite complete detection function
— Toggle bit
— Data polling
• Hardware and software data protection functions
• All inputs and outputs are TTL compatible.
• Pin assignment conforms to the JEDEC byte-wide
EEPROM standard.
• Package
SOP 32-pin (525 mil) plastic package:LE28CV1001M
TSOP 32-pin (8 × 20 mm) plastic package:LE28CV1001T
Package Dimensions
unit: mm
3205-SOP32
[LE28CV1001M]
unit: mm
3224-TSOP32
[LE28CV1001T]
SANYO: SOP32
SANYO: TSOP32 (TYPE-I)
These FLASH MEMORY products incorporate technology licensed Silicon Storage Technology, Inc.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
93096HA (OT) No. 5409-1/14

1 page




LE28CV1001T-15 pdf
LE28CV1001M, T-12/15
Toggle Bit (DQ6)
Data values of 0 and 1 are output alternately for DQ6, that is DQ6 is toggled between 0 and 1, during the internal
programming cycle. When the internal programming cycle completes this toggling is stopped and the device becomes
ready to execute the next operation. Figure 5 shows the toggle bit timing diagram and Figure 10 shows the flowchart for
this operation.
Data Protection
Hardware Data Protection
Noise and glitch protection: The LE28CV1001 does not execute write operations for WE or OE pulses that are 15 ns or
shorter.
Power (VDD) on and cutoff detection: The programming operation is disabled when VDD is 2.5 V or lower.
Write inhibit mode: Writing is disabled when OE is low and either CE is high or WE is high. Use this function to prevent
writes from occurring when the power is being turned on or off.
Software Data Protection
The LE28CV1001 implements the optional software data protection function recognized by JEDEC. This function
requires that a 3-byte load operation to be performed before a write operation data load. The 3-byte load sequence starts
a page load cycle without activating any write operation. Thus this is an optimal protection scheme for unintended write
cycles triggered by noise associated with powering the chip on or off. Note that the LE28CV1001 is shipped with the
software data protection function disabled.
The software data protection circuit is activated by executing a 3-byte byte load cycle in advance of the data sequence in
the page load cycle. (See Figure 6.) This causes the device to automatically enter data protection mode. After this, write
operations require a 3-byte byte load cycle to be executed in advance. A 6-byte write sequence is required to switch the
device out of this protection mode. Figure 7 shows the timing diagram. If a write operation is attempted in software
protection mode, all device functions are disabled for 200 µs. Figure 11 shows the flowchart for this operation.
Product Identification
The device identification code is used for recognizing the device and its manufacturer. This mode can be used by
hardware and software. The hardware operating mode is used to recognize algorithms that match the device when an
external programming unit is used. Also, user systems can recognize the product number using software product
identification mode. Figure 12 shows the flowchart for this operation. The manufacturer and device codes are the same
in both modes.
No. 5409-5/14

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LE28CV1001T-15 arduino
LE28CV1001M, T-12/15
Figure 9 Write Algorithm
No. 5409-11/14

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