參數(shù)資料
型號(hào): LPC2930FBD208
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: ARM9 flashless microcontroller with CAN, LIN, and USB
中文描述: 32-BIT, MROM, 125 MHz, RISC MICROCONTROLLER, PQFP208
封裝: 28 X 28 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT459-1, LQFP-208
文件頁數(shù): 22/98頁
文件大?。?/td> 643K
代理商: LPC2930FBD208
LPC2930_3
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 03 — 16 April 2010
22 of 98
NXP Semiconductors
LPC2930
ARM9 microcontroller with CAN, LIN, and USB
Table 10.
CS[2:0]
000
001
010
011
100
101
110
111
6.7.2
Boot process
The flashless LPC2930 uses pins P2[7]/D15 and P2[6]/D14 to configure the external
memory bus during the boot process. These pins are sampled during POR. See
Table 11
for possible memory configurations and
Table 41
for connecting the LPC2930 to external
memory during booting.
Table 11.
P2[7]/D15 (BOOT1) P2[6]/D14 (BOOT0) Description
0
0
0
1
1
0
1
1
The start-up code residing in the external memory must be linked to execute from address
location 0x5C00 0000 (CS7) if the TCM is enabled. If TCM is
not
enabled, executing from
address 0x0000 0000 is also possible.
Remark:
During the boot process all address lines A23 to A0 are configured as digital
output. Do not drive any of the address lines as input even if they are not used.
6.7.3
Pin description
The external static-memory controller module in the LPC2930 has the following pins,
which are combined with other functions on the port pins of the LPC2930.
Table 12
shows
the external memory controller pins.
Table 12.
Symbol
EXTBUS CSx
EXTBUS BLSy
EXTBUS WE
EXTBUS OE
EXTBUS A[23:0] A[23:0]
EXTBUS D[31:0] D[31:0]
6.7.4
Clock description
The External Static-Memory Controller is clocked by CLK_SYS_SMC, see
Section 6.6.2
.
External static-memory controller banks
Bank
bank 0
bank 1
bank 2
bank 3
bank 4
bank 5
bank 6
bank 7
Boot control pins P2[7]/D15 and P2[6]/D14
boot from 8-bit external memory on CS7
reserved
boot from 32-bit external memory on CS7
boot from 16-bit external memory on CS7
External memory controller pins
Pin names
CSx
BLSy
WE
OE
Direction
OUT
OUT
OUT
OUT
OUT
IN/OUT
Description
memory-bank x select, x runs from 0 to 7
byte-lane select input y, y runs from 0 to 3
write enable (active LOW)
output enable (active LOW)
address bus
data bus
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