P30
2.0
Functional Overview
This section provides an overview of the features and capabilities of the P30.
The P30 family provides density upgrades from 64-Mbit through 512-Mbit. This family
of devices provides high performance at low voltage on a 16-bit data bus. Individually
erasable memory blocks are sized for optimum code and data storage.
Upon initial power up or return from reset, the device defaults to asynchronous page-
mode read. Configuring the Read Configuration Register enables synchronous burst-
mode reads. In synchronous burst mode, output data is synchronized with a user-
supplied clock signal. A WAIT signal provides an easy CPU-to-flash memory
synchronization.
In addition to the enhanced architecture and interface, the device incorporates
technology that enables fast factory program and erase operations. Designed for low-
voltage systems, the
P30 supports read operations with VCC at 1.8 V, and erase and program operations with
VPP at 1.8 V or 9.0 V. Buffered Enhanced Factory Programming (BEFP) provides the
fastest flash array programming performance with VPP at 9.0 V, which increases factory
throughput. With VPP at 1.8 V, VCC and VPP can be tied together for a simple, ultra low
power design. In addition to voltage flexibility, a dedicated VPP connection provides
complete data protection when VPP ≤ VPPLK
.
A Command User Interface (CUI) is the interface between the system processor and all
internal operations of the device. An internal Write State Machine (WSM) automatically
executes the algorithms and timings necessary for block erase and program. A Status
Register indicates erase or program completion and any errors that may have occurred.
An industry-standard command sequence invokes program and erase automation. Each
erase operation erases one block. The Erase Suspend feature allows system software to
pause an erase cycle to read or program data in another block. Program Suspend
allows system software to pause programming to read other locations. Data is
programmed in word increments (16 bits).
The P30 protection register allows unique flash device identification that can be used to
increase system security. The individual Block Lock feature provides zero-latency block
locking and unlocking. In addition, the P30 device also has four pre-defined spaces in
the main array that can be configured as One-Time Programmable (OTP).
2.1
Virtual Chip Enable Description
The P30 512Mbit devices employ a Virtual Chip Enable which combines two 256-Mbit
die with a common chip enable, F1-CE# for QUAD+ packages or CE# for Easy BGA and
TSOP packages. (Refer to Figure 9 on page 21 and Figure 10 on page 21). Address A24
(Quad+ package) or A25 (Easy BGA and TSOP packages) is then used to select
between the die pair with F1-CE# / CE# asserted depending upon the package option
used. When chip enable is asserted and QUAD+ A24 (Easy BGA/TSOP A25) is low (VIL),
The lower parameter die is selected; when chip enable is asserted and QUAD+ A24
(Easy BGA/TSOP A25) is high (VIH), the upper parameter die is selected. Refer to
Table 1 and Table 2 for additional details.
Table 1:
Virtual Chip Enable Truth Table for 512 Mb (QUAD+ Package)
Die Selected
F1-CE#
A24
Lower Param Die
Upper Param Die
L
L
L
H
Datasheet
8
November 2007
Order Number: 306666-11
NUMONYX [ NUMONYX B.V ]
