W19B320BT/B DATASHEET
Table of Contents-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................................4
FEATURES ..............................................................................................................................................4
PIN CONFIGURATIONS .........................................................................................................................5
BLOCK DIAGRAM ...................................................................................................................................5
PIN DESCRIPTION..................................................................................................................................5
FUNCTIONAL DESCRIPTION ................................................................................................................6
6.1
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10
6.1.11
6.1.12
6.1.13
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.3
6.3.1
6.3.2
6.3.3
6.3.4
Device Bus Operation.....................................................................................................................6
Word/Byte Configuration ................................................................................................................6
Reading Array Data ........................................................................................................................6
Writing Commands/Command Sequences ....................................................................................6
Standby Mode.................................................................................................................................7
Automatic Sleep Mode....................................................................................................................7
#RESET: Hardware Reset Pin .......................................................................................................7
Output Disable Mode ......................................................................................................................8
AUTOSELECT Mode......................................................................................................................8
Sector/Sector Block Protection and Unprotection ..........................................................................8
Write Protect (#WP)........................................................................................................................8
Temporary Sector Unprotect ..........................................................................................................8
Security Sector Flash Memory Region ...........................................................................................9
Hardware Data Protection ............................................................................................................10
Command Definitions ...................................................................................................................10
Reading Array Data ......................................................................................................................10
Reset Command...........................................................................................................................10
AUTOSELECT Command Sequence...........................................................................................11
Byte/Word Program Command Sequence ...................................................................................11
Unlock Bypass Command Sequence...........................................................................................12
Chip Erase Command Sequence .................................................................................................12
Sector Erase Command Sequence ..............................................................................................13
Write Operation Status .................................................................................................................13
DQ7: #Data Polling .......................................................................................................................13
RY/#BY: Ready/#Busy..................................................................................................................14
DQ6: Toggle Bit I ..........................................................................................................................14
Reading Toggle Bits DQ6/DQ2 ....................................................................................................14
Publication Release Date: Dec. 22, 2008
Revision A5
-1-
W19B320BT/B DATASHEET
6.3.5
6.3.6
7.
7.1
7.2
7.3
7.4
7.5
7.5.1
7.5.2
7.5.3
7.5.4
7.5.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
8.
8.1
8.2
8.3
8.4
8.5
8.6
8.6.1
8.7
8.8
8.9
8.10
8.11
8.12
9.
9.1
9.2
DQ5: Exceeded Timing Limits ......................................................................................................15
DQ3: Sector Erase Timer .............................................................................................................15
Device Bus Operations.................................................................................................................16
AUTOSELECT Codes (High Voltage Method) .............................................................................17
Sector Address Table (Top Boot Block) .......................................................................................18
Sector Address Table (Bottom Boot Block)..................................................................................20
CFI Query Identification String .....................................................................................................25
System Interface String ................................................................................................................25
Device Geometry Definition..........................................................................................................26
Primary Vendor-Specific Extended Query....................................................................................27
Command Definitions ...................................................................................................................28
Write Operation Status .................................................................................................................29
Temporary Sector Unprotect Algorithm........................................................................................30
In-System Sector Protect/Unprotect Algorithms...........................................................................31
Security Sector Protect Verify.......................................................................................................32
Program Algorithm........................................................................................................................32
Erase Algorithm.........................................................................................................................33
Data Polling Algorithm ..............................................................................................................33
Toggle Bit Algorithm..................................................................................................................34
Absolute Maximum Ratings..........................................................................................................35
Operating Ranges.........................................................................................................................35
DC Characteristics........................................................................................................................36
CMOS Compatible........................................................................................................................36
AC Characteristics ........................................................................................................................37
Test Condition...............................................................................................................................37
AC Test Load and Waveforms .....................................................................................................37
Read-Only Operations..................................................................................................................38
Hardware Reset (#RESET) ..........................................................................................................38
Word/Byte Configuration (#BYTE)................................................................................................38
Erase and Program Operation ..................................................................................................39
Temporary Sector Unprotect.....................................................................................................39
Alternate #CE Controlled Erase and Program Operations .......................................................40
AC Read Waveform......................................................................................................................41
Reset Waveform ...........................................................................................................................41
TABLE OF OPERATION MODES .........................................................................................................16
ELECTRICAL CHARACTERISTICS......................................................................................................35
TIMING WAVEFORMS ..........................................................................................................................41
-2-
Publication Release Date:Dec, 22, 2008
Revisionv A5
W19B320BT/B DATASHEET
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
9.11
9.12
9.13
10.
11.
12.
13.
14.
#BYTE Waveform for Read Operation .........................................................................................42
#BYTE Waveform for Write Operation .........................................................................................42
Programming Waveform...............................................................................................................43
Accelerated Programming Waveform ..........................................................................................43
Chip/Sector Erase Waveform .......................................................................................................44
Back-to back Read/Write Cycle Waveform ..................................................................................44
#Data Polling Waveform (During Embedded Algorithms) ............................................................45
Toggle Bit Waveform (During Embedded Algorithms)..............................................................45
Temporary Sector Unprotect Timing Diagram ..........................................................................46
Sector/Sector Block Protect and Unprotect Timing Diagram....................................................46
Alternate #CE Controlled Write (Erase/Program) Operation Timing ........................................47
LATCHUP CHARACTERISTICS ...........................................................................................................48
CAPACITANCE......................................................................................................................................48
ORDERING INFORMATION .................................................................................................................49
PACKAGE DIMENSION ........................................................................................................................50
13.1
48-Pin Standard Thin Small Outline Package ..........................................................................50
VERSION HISTORY ..............................................................................................................................51
-3-
Publication Release Date:Dec, 22, 2008
Revisionv A5
W19B320BT/B DATASHEET
1. GENERAL DESCRIPTION
The W19B320BT/B is a 32Mbit, 2.7~3.6-volt single bank CMOS flash memory organized as 4M x 8 or 2M
×
16
bits. The word-wide (× 16) data appears on DQ15-DQ0, and byte-wide (x 8) data appears on DQ7-DQ0. The
device can be programmed and erased in-system with a standard 3.0-volt power supply. A 12-volt V
PP
is not
required. The unique cell architecture of the W19B320BT/B results in fast program/erase operations with
extremely low current consumption (compared to other comparable 3-volt flash memory products). The device
can also be programmed and erased by using standard EPROM programmers.
2. FEATURES
Performance
•
2.7~3.6-volt write (program and erase)
operations
•
Fast write operation
−
Sector erases time: 0.4 Sec (typical)
−
Chip erases time: 30Sec (typical)
−
Byte/Word programming time: 7/9
μs
(typical)
•
Read access time: 70 ns
•
Typical program/erase cycles: 100K
•
Twenty-year data retention
•
Ultra low power consumption
−
Active current (Read): 10 mA (typical)
−
Active current (Read while Erase): 21 mA
(typical)
−
Standby current: 0.2
μA
(typical)
Architecture
•
Sector erase architecture
−
Eight 8KB, and sixty-three 64KB sectors
−
Top or bottom boot block configurations
available
−
Supports full chip erase
•
Security Sector Size: 256 Bytes
−
The Security Sector is an OTP; once the sector
is programmed, it cannot be erased
•
JEDEC standard byte-wide and word-wide
pinouts
•
Manufactured on WinStack 0.13μm process
technology
•
Available packages: 48-pin TSOP
Software Features
•
Compatible with common Flash Memory
Interface (CFI) specification
−
Flash device parameters stored directly on the
device
−
Allows software driver to identify and use a
variety of different current and future Flash
products
•
End of program detection
−
Software method: Toggle bit/Data polling
•
Unlock Bypass Program command
−
Reduces overall programming time when
issuing multiple program command sequences
Hardware Features
•
Ready/#Busy output (RY/#BY)
−
Detect program or erase cycle completion
•
Hardware reset pin (#RESET)
−
Reset the internal state machine to the read
mode
•
#WP/ACC input pin
−
Write protect (#WP) function allows protection
of two outermost boot sectors, regardless of
sector protection status
Temperature range
•
Extended temperature range (-20
℃
to 85
℃
)
•
-4-
Publication Release Date:Dec, 22, 2008
Revisionv A5
W19B320BT/B DATASHEET
3. PIN CONFIGURATIONS
4. BLOCK DIAGRAM
V
DD
V
SS
#CE
#OE
#WE
#WP/ACC
#BYTE
#RESET
DQ15/A-1
A0
.
.
.
A20
DECODER
BANK
CONTROL
OUTPUT
BUFFER
DQ0
.
.
DQ15/A-1
5. PIN DESCRIPTION
SYMBOL
PIN NAME
A0−A20
Address Inputs
Word
mode
Byte
mode
DQ15 is Data
Inputs/Outputs
A-1 is Address input
DQ0−DQ14 Data Inputs/Outputs
DQ15/A-1
#CE
#OE
#WE
#WP/ACC
#BYTE
#RESET
RY/#BY
V
DD
V
SS
NC
Chip Enable
Output Enable
Write Enable
Hardware Write Protect/
Acceleration Pin
Byte Enable Input
Hardware Reset
Ready/Busy Status
Power Supply
Ground
No Connection
-5-
Publication Release Date:Dec, 22, 2008
Revisionv A5
MEMS传感器
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