W19B320ATB7L
| Model | W19B320ATB7L |
| Description | Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, TFBGA-48 |
| PDF file | Total 53 pages (File size: 479K) |
| Chip Manufacturer | WINBOND |
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
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