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Teilenummer | W29C102 |
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Beschreibung | 64K 16 CMOS FLASH MEMORY | |
Hersteller | Winbond | |
Logo | ||
Gesamt 21 Seiten W29C102
64K × 16 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W29C102 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 W29C102 results in fast program/erase operations
www.DataSheet4U.comwith 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 program and erase operations
• Fast page-write operations
− 128 words per page
− Page program cycle: 10 mS (max.)
− Effective word-program cycle time: 39 µS
− Optional software-protected data write
• Fast chip-erase operation: 50 mS
• Read access time: 70/90/120 nS
• Typical page program/erase cycles: 1K/10K
• Ten-year data retention
• Software and hardware data protection
• Low power consumption
− Active current: 25 mA (typ.)
− Standby current: 20 µA (typ.)
• Automatic program timing with internal VPP
generation
• End of program detection
− Toggle bit
− Data polling
• Latched address and data
• TTL compatible I/O
• JEDEC standard word-wide pinouts
• Available packages: 40-pin 600 mil DIP, TSOP
and 44-pin PLCC
Publication Release Date: March 1998
- 1 - Revision A3
W29C102
Command Codes for Software Data Protection
BYTE SEQUENCE
TO ENABLE PROTECTION
ADDRESS
DATA
0 Write
5555H
AAAAH
1 Write
2AAAH
5555H
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2 Write
3 Write
5555H
-
A0A0H
-
4 Write
--
5 Write
--
TO DISABLE PROTECTION
ADDRESS
DATA
5555H
AAAAH
2AAAH
5555H
5555H
8080H
5555H
AAAAH
2AAAH
5555H
5555H
2020H
Software Data Protection Acquisition Flow
Software Data Protection
Enable Flow
Load data AAAA
to
address 5555
Software Data Protection
Disable Flow
Load data AAAA
to
address 5555
Load data 5555
to
address 2AAA
Load data 5555
to
address 2AAA
Load data A0A0
to
address 5555
Load data 8080
to
address 5555
(Optional page-load
operation)
Sequentially load
up to 128 words
of page data
Pause 10 mS
Load data AAAA
to
address 5555
Load data 5555
to
address 2AAA
Exit Load data 2020
to
address 5555
Pause 10 mS
Notes for software program code:
Data Format: DQ15−DQ0 (Hex)
Address Format: A14−A0 (Hex)
Exit
-6-
6 Page W29C102
AC Characteristics, continued
DATA Polling Characteristics (1)
PARAMETER
SYMBOL
Data Hold Time
TDH
OE Hold Time
TOEH
www.DataSheet4U.comOE to Output Delay (2)
Write Recovery Time
TOE
TWR
Notes:
(1) These parameters are characterized and not 100% tested.
(2) See TOE spec in A.C. Read Cycle Timing Parameters.
MIN.
10
10
-
0
Toggle Bit Characteristics (1)
PARAMETER
SYMBOL
Data Hold Time
TDH
OE Hold Time
TOEH
OE to Output Delay (2)
TOE
OE High Pulse
TOEHP
Write Recovery Time
TWR
Notes:
(1) These parameters are characterized and not 100% tested.
(2) See TOE spec in A.C. Read Cycle Timing Parameters.
MIN.
10
10
-
150
0
TYP.
-
-
-
-
MAX.
-
-
-
-
UNIT
nS
nS
nS
nS
TYP.
-
-
-
-
-
MAX.
-
-
-
-
-
UNIT
nS
nS
nS
nS
nS
- 12 -
12 Page | ||
Seiten | Gesamt 21 Seiten | |
PDF Download | [ W29C102 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
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