W19B320AT/B Data Sheet
4M
×
8/2M
×
16 BITS
3V FLEXIBLE BANK FLASH MEMORY
Table of Contents-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................... 4
FEATURES ................................................................................................................................. 4
PIN CONFIGURATIONS ............................................................................................................ 5
BLOCK DIAGRAM ...................................................................................................................... 6
PIN DESCRIPTION..................................................................................................................... 6
FUNCTIONAL DESCRIPTION ................................................................................................... 7
6.1
Device Bus Operation..................................................................................................... 7
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
6.1.14
Word/Byte Configuration ..................................................................................................7
Reading Array Data ..........................................................................................................7
Writing Commands/Command Sequences.......................................................................7
Simultaneous Read/Write Operations with Zero Latency .................................................8
Standby Mode ..................................................................................................................8
Automatic Sleep Mode .....................................................................................................8
#RESET: Hardware Reset Pin..........................................................................................9
Output Disable Mode........................................................................................................9
Autoselect Mode...............................................................................................................9
Sector/Sector Block Protection and Unprotection...........................................................9
Write Protect (#WP) .....................................................................................................10
Temporary Sector Unprotect ........................................................................................10
Security Sector Flash Memory Region .........................................................................10
Hardware Data Protection ............................................................................................11
Reading Array Data ........................................................................................................12
Reset Command.............................................................................................................12
AUTOSELECT Command Sequence .............................................................................13
Byte/Word Program Command Sequence......................................................................13
Unlock Bypass Command Sequence .............................................................................14
Chip Erase Command Sequence ...................................................................................14
Sector Erase Command Sequence ................................................................................14
Erase Suspend/Erase Resume Commands ...................................................................15
DQ7: #Data Polling.........................................................................................................16
RY/#BY: Ready/#Busy ...................................................................................................16
DQ6: Toggle Bit I............................................................................................................16
6.2
Command Definitions ................................................................................................... 12
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.3
Write Operation Status ................................................................................................. 16
6.3.1
6.3.2
6.3.3
-1-
Publication Release Date: December 27, 2005
Revision A4
W19B320AT/B
6.3.4
6.3.5
6.3.6
6.3.7
DQ2: Toggle Bit II...........................................................................................................17
Reading Toggle Bits DQ6/DQ2 ......................................................................................17
DQ5: Exceeded Timing Limits ........................................................................................17
DQ3: Sector Erase Timer ...............................................................................................18
7.
TABLE OF OPERATION MODES ............................................................................................ 19
7.1
7.2
7.3
7.4
7.5
Device Bus Operations ................................................................................................. 19
AUTOSELECT Codes (High Voltage Method) ............................................................. 19
Sector Address Table (Top Boot Block) ....................................................................... 20
Sector Address Table (Bottom Boot Block) .................................................................. 22
CFI Query Identification String...................................................................................... 26
7.5.1
7.5.2
7.5.3
7.5.4
7.5.5
System Interface String ..................................................................................................26
Device Geometry Definition ............................................................................................27
Primary Vendor-Specific Extended Query ......................................................................28
Command Definitions .....................................................................................................29
Write Operation Status ...................................................................................................30
7.6
7.7
7.8
7.9
7.10
7.11
7.12
8.
8.1
8.2
8.3
8.4
Temporary Sector Unprotect Algorithm ........................................................................ 31
In-System Sector Protect/Unprotect Algorithms........................................................... 32
Security Sector Protect Verify....................................................................................... 33
Program Algorithm........................................................................................................ 33
Erase Algorithm ............................................................................................................ 34
Data Polling Algorithm .................................................................................................. 34
Toggle Bit Algorithm ..................................................................................................... 35
Absolute Maximum Ratings .......................................................................................... 36
Operating Ranges......................................................................................................... 36
DC Characteristics........................................................................................................ 37
8.3.1
8.4.1
8.4.2
CMOS Compatible..........................................................................................................37
Test Condition ................................................................................................................38
AC Test Load and Waveforms .......................................................................................38
ELECTRICAL CHARACTERISTICS......................................................................................... 36
AC Characteristics ........................................................................................................ 38
8.5
8.6
8.7
8.8
8.9
8.10
9.
9.1
Read-Only Operations .................................................................................................. 39
Hardware Reset (#RESET) .......................................................................................... 39
Word/Byte Configuration (#BYTE)................................................................................ 39
Erase and Program Operation...................................................................................... 40
Temporary Sector Unprotect ........................................................................................ 40
Alternate #CE Controlled Erase and Program Operations........................................... 41
AC Read Waveform...................................................................................................... 42
-2-
TIMING WAVEFORMS ............................................................................................................. 42
W19B320AT/B
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
9.11
9.12
9.13
9.14
10.
11.
12.
13.
Reset Waveform ........................................................................................................... 42
#BYTE Waveform for Read Operation ......................................................................... 43
#BYTE Waveform for Write Operation ......................................................................... 43
Programming Waveform............................................................................................... 44
Accelerated Programming Waveform........................................................................... 44
Chip/Sector Erase Waveform ....................................................................................... 45
Back-to back Read/Write Cycle Waveform .................................................................. 45
#Data Polling Waveform (During Embedded Algorithms) ............................................ 46
Toggle Bit Waveform (During Embedded Algorithms) ................................................. 46
DQ 2 vs. DQ6 Waveform .............................................................................................. 47
Temporary Sector Unprotect Timing Diagram.............................................................. 47
Sector/Sector Block Protect and Unprotect Timing Diagram ....................................... 47
Alternate #CE Controlled Write (Erase/Program) Operation Timing............................ 48
LATCHUP CHARACTERISTICS .............................................................................................. 49
CAPACITANCE......................................................................................................................... 49
ORDERING INFORMATION .................................................................................................... 50
PACKAGE DIMENSIONS ......................................................................................................... 51
13.1
13.2
TFBGA48ball (6X8 mm^2, Ø=0.40mm)........................................................................ 51
48-Pin Standard Thin Small Outline Package .............................................................. 52
14.
VERSION HISTORY ................................................................................................................. 53
-3-
Publication Release Date: December 27, 2005
Revision A4
W19B320AT/B
1. GENERAL DESCRIPTION
The W19B320AT/B is a 32Mbit, 2.7~3.6-volt flexible 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 W19B320AT/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: 49 Sec (typical)
−
Byte programming time: 5
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/Program):
21 mA (typical)
−
Standby current: 0.2
μA
(typical)
Architecture
•
Flexible Bank architectures
−
Consist of four banks that customer can
group the bank size as they needed
−
Bank 1: 4M; Bank 2: 12M;
Bank 3: 12M; Bank 4: 4M
•
Security Sector Size: 256 Bytes
−
The Security Sector is an OTP; once the
sector is programmed, it cannot be erased
•
Simultaneous Read/write operation
−
Data can be continuously read from one bank
while processing erase/program functions in
other bank with zero latency
•
JEDEC standard byte-wide and word-wide
pinouts
•
Manufactured on WinStack 0.18μm process
technology
•
Available packages: 48-pin TSOP and 48-ball
TFBGA (6x8mm)
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
•
Erase Suspend/Erase Resume
−
Suspends erase operations to allow
programming in same bank
•
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
-4-
W19B320AT/B
•
#WP/ACC input pin
−
Write protect (#WP) function allows
protection of two outermost boot sectors,
regardless of sector protection status
−
Acceleration (ACC) function accelerates
program timing
•
Sector Protection
−
Sectors can be locked in-system or via
programmer
−
Temporary Sector Unprotect allows changing
data in protected sectors in-system
3. PIN CONFIGURATIONS
(Top View, Balls Face Down)
A6
A13
48-Ball TFBGA
C6
A14
B6
A12
D6
A15
E6
A16
F6
#BYTE
G6
DQ15/A-1
H6
Vss
A5
A9
B5
A8
C5
A10
D5
A11
E5
DQ7
F5
DQ14
G5
DQ13
H5
DQ6
A4
#WE
B4
#RESET
C4
NC
D4
A19
E4
DQ5
F4
DQ12
G4
V
DD
H4
DQ4
A3
RY/#BY
B3
#WP/ACC
C3
A18
D3
A20
E3
DQ2
F3
DQ10
G3
DQ11
H3
DQ3
A2
A7
B2
A17
C2
A6
D2
A5
E2
DQ0
F2
DQ8
G2
DQ9
H2
DQ1
A1
A3
B1
A4
C1
A2
D1
A1
E1
A0
F1
#CE
G1
#OE
H1
Vss
A15
A14
A13
A12
A11
A10
A9
A8
A19
A20
#WE
#RESET
NC
#WP/ACC
RY/#BY
A18
A17
A7
A6
A5
A4
A3
A2
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
48-pin
TSOP
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A16
#BYTE
Vss
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
V
DD
DQ11
DQ3
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
#OE
Vss
#CE
A0
-5-
Publication Release Date: December 27, 2005
Revision A4
京公网安备 11010802033920号
EEWORLD
