W49F201S-55 Datasheet PDF - Winbond
| Part Number | W49F201S-55 | |
| Description | 128K X 16 CMOS FLASH MEMORY | |
| Manufacturers | Winbond | |
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Preliminary W49F201
128K × 16 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W49F201 is a 2-megabit, 5-volt only CMOS flash memory organized as 128K × 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 W49F201 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/Erase/Program
• Fast Program operation:
− Word-by-Word programming: 50 µS (max.)
• Fast Erase operation: 60 mS (typ.)
• Fast Read access time: 45/55 nS
• Endurance: 1K/10K cycles (typ.)
• Ten-year data retention
• Hardware data protection
• Sector configuration
− One 8K words boot block with lockout
protection
− Two 8K words parameter blocks
− One 104K words (208K bytes) Main Memory
Array Blocks
• 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: 44-pin SOP, 48-pin TSOP
Publication Release Date: June 1999
- 1 - Revision A1
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Preliminary W49F201
Toggle Bit (DQ6)- Write Status Detection
In addition to data polling, the W49F201 provides another method for determining the end of a
program cycle. During the internal program or erase cycle, any consecutive attempts to read DQ6 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, 00DA(hex). A read from
address 0001(hex) outputs the device code, 00AE(hex). The product ID operation can be terminated
by a three-word command sequence or an alternative 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.
TABLE OF OPERATING MODES
Operating Mode Selection
(VHH = 12V ±5 %)
MODE
Read
Erase/Program
Standby
Erase/Program
Inhibit
Output Disable
Product ID
CE
VIL
VIL
VIH
X
X
X
VIL
OE
VIL
VIH
X
VIL
X
VIH
VIL
VIL VIL
Reset
XX
PINS
WE RESET
ADDRESS
DQ.
VIH VIH AIN
Dout
VIL VIH AIN
Din
X VIH X
High Z
X VIH X
High Z/DOUT
VIH VIH X
High Z/DOUT
X VIH X
High Z
VIH VIH A0 = VIL;
Manufacturer Code
A1−A15 = VIL; A9 = VHH 00DA (Hex)
VIH VIH A0 = VIH;
Device Code
A1−A15 = VIL; A9 = VHH 00AE (Hex)
X VIL X
High Z
Publication Release Date: June 1999
- 5 - Revision A1
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for W49F201S-55 electronic component. |
| Information | Total 23 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ W49F201S-55.PDF Datasheet ] | |
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