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PDF W49F201S-55 Data sheet ( Hoja de datos )

Número de pieza W49F201S-55
Descripción 128K X 16 CMOS FLASH MEMORY
Fabricantes Winbond 
Logotipo Winbond Logotipo



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No Preview Available ! W49F201S-55 Hoja de datos, Descripción, Manual

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

1 page




W49F201S-55 pdf
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
A1A15 = VIL; A9 = VHH 00DA (Hex)
VIH VIH A0 = VIH;
Device Code
A1A15 = VIL; A9 = VHH 00AE (Hex)
X VIL X
High Z
Publication Release Date: June 1999
- 5 - Revision A1

5 Page





W49F201S-55 arduino
Preliminary W49F201
Command Codes for Boot Block Lockout Enable
BYTE SEQUENCE
1 Write
2 Write
3 Write
4 Write
5 Write
6 Write
BOOT BLOCK LOCKOUT FEATURE SET
ADDRESS
DATA
5555H
AAH
2AAAH
55H
5555H
80H
5555H
AAH
2AAAH
55H
5555H
40H
Pause 200 mS
Boot Block Lockout Enable Acquisition Flow
Boot Block Lockout
Feature Set Flow
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 40
to
address 5555
Pause 200 mS
Exit
Notes for boot block lockout enable:
Data Format: DQ15-DQ8 Don't Care), DQ7DQ0 (Hex)
Address Format: A14A0 (Hex)
- 11 -
Publication Release Date: June 1999
Revision A1

11 Page







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