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W29F102 데이터시트 PDF




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부품번호 W29F102 기능
기능 64K 16 CMOS FLASH MEMORY
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W29F102 데이터시트, 핀배열, 회로
W29F102
64K × 16 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W29F102 is a 1-megabit, 5-volt only CMOS flash memory organized as 64K × 16 bits. The
device can be programmed and erased in-system with a standard 5V power supply. A 12-volt VPP is
not required. The unique cell architecture of the W29F102 results in fast program/erase operations
with extremely low current consumption (compared to other comparable 5-volt flash memory
products). The device can also be programmed and erased using standard EPROM programmers.
FEATURES
Single 5-volt operations:
5-volt Read
5-volt Erase
5-volt Program
Fast Program operation:
Word-by-Word programming: 50 µS (max.)
Fast Erase operation: 100 mS (typ.)
Fast Read access time: 45/50/55/70 nS
Endurance: 1K/10K cycles (typ.)
Ten-year data retention
Hardware data protection
8K word Boot Block with Lockout protection
Low power consumption
Active current: 25 mA (typ.)
Standby current: 20 µA (typ.)
Automatic program and erase timing with
internal VPP generation
End of program or erase detection
Toggle bit
Data polling
Latched address and data
TTL compatible I/O
JEDEC standard word-wide pinouts
Available packages: 40-pin TSOP and 44-pin
PLCC
-1-
Publication Release Date: June 1999
Revision A4
Free Datasheet http://www.datasheet4u.com/




W29F102 pdf, 반도체, 판매, 대치품
W29F102
Program Operation
The W29F102 is programmed on a word-by-word basis. Program operation can only change logical
data "1" to logical data "0" The erase operation (changed entire data in main memory and/or boot
block from "0" to "1" is needed before programming.
The program operation is initiated by a 4-word command cycle (see Command Codes for Word
Programming). The device will interally enter the program operation immediately after the word-
program command is entered. The internal program timer will automatically time-out (50 µS max. -
TBP) once completed and return to normal read mode. Data polling and/or Toggle Bits can be used to
detect end of program cycle.
Hardware Data Protection
The integrity of the data stored in the W29F102 is also hardware protected in the following ways:
(1) Noise/Glitch Protection: A WE pulse of less than 15 nS in duration will not initiate a write cycle.
(2) VDD Power Up/Down Detection: The programming operation is inhibited when VDD is less than
2.5V typical.
(3) Write Inhibit Mode: Forcing OE low, CE high, or WE high will inhibit the write operation. This
prevents inadvertent writes during power-up or power-down periods.
(4) VDD power-on delay: When VDD has reached its sense level, the device will automatically time-out
5 mS before any write (erase/program) operation.
Data Polling (DQ7 & DQ15)- Write Status Detection
The W29F102 includes a data polling feature to indicate the end of a program or erase cycle. When
the W29F102 is in the internal program or erase cycle, any attempt to read DQ7 or DQ15 of the last
word loaded will receive the complement of the true data. Once the program or erase cycle is
completed, DQ7 or DQ15 will show the true data. Note that DQ7 or DQ15 will show logical "0" during
the erase cycle, and become logical "1" or true data when the erase cycle has been completed.
Toggle Bit (DQ6 & DQ14)- Write Status Detection
In addition to data polling, the W29F102 provides another method for determining the end of a
program cycle. During the internal program or erase cycle, any consecutive attempts to read DQ6 or
DQ14 will produce alternating 0's and 1's. When the program or erase cycle is completed, this toggling
between 0's and 1's will stop. The device is then ready for the next operation.
Product Identification
The product ID operation outputs the manufacturer code and device code. Programming equipment
automatically matches the device with its proper erase and programming algorithms.
The manufacturer and device codes can be accessed by software or hardware operation. In the
software access mode, a six-word (or JEDEC 3-word) command sequence can be used to access the
product ID. A read from address 0000H outputs the manufacturer code (00DAh). A read from address
0001H outputs the device code (002Fh). The product ID operation can be terminated by a three-word
command sequence or an altenate one-word command sequence (see Command Definition table).
In the hardware access mode, access to the product ID is activated by forcing CE and OE low, WE
high, and raising A9 to 12 volts.
-4-
Free Datasheet http://www.datasheet4u.com/

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W29F102 전자부품, 판매, 대치품
W29F102
Command Codes for Chip Erase
BYTE SEQUENCE
1 Write
2 Write
3 Write
4 Write
5 Write
6 Write
Chip Erase Acquisition Flow
ADDRESS
5555H
2AAAH
5555H
5555H
2AAAH
5555H
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 80
to
address 5555
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 10
to
address 5555
Pause 1 Sec.
Exit
Notes for chip erase:
Data Format: DQ15-DQ8: Don't Care ; DQ7DQ0 (Hex)
Address Format: A14A0 (Hex)
-7-
DATA
AAH
55H
80H
AAH
55H
10H
Publication Release Date: June 1999
Revision A4
Free Datasheet http://www.datasheet4u.com/

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부품번호상세설명 및 기능제조사
W29F102

64K 16 CMOS FLASH MEMORY

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