LPC2926_27_29 NXP Semiconductors, LPC2926_27_29 Datasheet - Page 22

• Manufacturer Part Number: LPC2926_27_29
• Description: The LPC2926/2927/2929 combine an ARM968E-S CPU core with two integrated TCMblocks operating at frequencies of up to 125 MHz, Full-speed USB 2
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2926_27_29
Product data sheet
6.8.5 Flash bridge wait-states
Table 10
Table 10.
[1]
The index sector is a special sector in which the JTAG access protection and sector
security are located. The address space becomes visible by setting the FS_ISS bit and
overlaps the regular flash sector’s address space.
Note that the index sector, once programmed, cannot be erased. Any flash operation must
be executed out of SRAM (internal or external).
To eliminate the delay associated with synchronizing flash-read data, a predefined
number of wait-states must be programmed. These depend on flash memory response
time and system clock period. The minimum wait-states value can be calculated with the
following formulas:
Synchronous reading:
Asynchronous reading:
WST
WST
Sector number
11
12
13
14
15
16
17
18
0
1
2
3
4
5
6
7
8
9
10
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[1]
Availability of sector 3 to sector 10 depends on device type, see
>
>
t
----------------- -
t
--------------------- -
t
t
acc clk
acc addr
t
tclk sys
tclk sys
gives an overview of the flash-sector base addresses.
(
(
Flash sector overview
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All information provided in this document is subject to legal disclaimers.
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Rev. 5 — 28 September 2010
Sector size (kB)
8
8
8
8
8
8
8
8
64
64
64
64
64
64
64
64
64
64
64
ARM9 microcontroller with CAN, LIN, and USB
Sector base address
0x2000 0000
0x2000 2000
0x2000 4000
0x2000 6000
0x2000 8000
0x2000 A000
0x2000 C000
0x2000 E000
0x2001 0000
0x2002 0000
0x2003 0000
0x2004 0000
0x2005 0000
0x2006 0000
0x2007 0000
0x2008 0000
0x2009 0000
0x200A 0000
0x200B 0000
LPC2926/2927/2929
Section 3 “Ordering
© NXP B.V. 2010. All rights reserved.
information”.
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