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參數(shù)資料
| 型號： | LPC2290 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 16/32-bit ARM microcontrollers with CAN, 10-bit ADC and external memory interface |
| 中文描述： | 與CAN，16/32位ARM微控制器的10位模數(shù)轉(zhuǎn)換器和外部存儲器接口 |
| 文件頁數(shù)： | 19/41頁 |
| 文件大?。?/td> | 185K |
| 代理商： | LPC2290 |
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Philips Semiconductors
LPC2290
16/32-bit ARM microcontrollers with external memory interface
Preliminary data
Rev. 01 — 09 February 2004
19 of 41
9397 750 12874
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
6.9 External memory controller
The external Static Memory Controller is a module which provides an interface
between the system bus and external (off-chip) memory devices. It provides support
for up to four independently configurable memory banks (16 MBytes each with byte
lane enable control) simultaneously. Each memory banks is capable of supporting
SRAM, ROM, Flash EPROM, Burst ROM memory, or some external I/O devices.
Each memory bank may be 8, 16, or 32 bits wide.
6.10 General purpose parallel I/O
Device pins that are not connected to a specific peripheral function are controlled by
the GPIO registers. Pins may be dynamically configured as inputs or outputs.
Separate registers allow setting or clearing any number of outputs simultaneously.
The value of the output register may be read back, as well as the current state of the
port pins.
10:9
11
12
13
Reserved.
Controls the use of pin P3.26: 0 enables P3.26, 1 enables CS1.
Reserved.
If bits 25:23 are not 111, controls the use of pin P3.23/A23/XCLK: 0 enables P3.23,
1 enables XCLK.
Controls the use of pin P3.25: 00 enables P3.25, 01 enables CS2, 10 and 11 are
reserved values.
Controls the use of pin P3.24: 00 enables P3.24, 01 enables CS3, 10 and 11 are
reserved values.
Reserved.
If bits 5:4 are not 10, controls the use of pin P2.29:28: 0 enables P2.29:28, 1 is
reserved
If bits 5:4 are not 10, controls the use of pin P2.30: 0 enables P2.30, 1 enables
AIN4.
If bits 5:4 are not 10, controls the use of pin P2.31: 0 enables P2.31, 1 enables
AIN5.
Controls whether P3.0/A0 is a port pin (0) or an address line (1).
-
0
-
0
15:14
00
17:16
00
19:18
20
-
0
21
1
22
1
23
1 if BOOT1:0=00 at
RESET=0,
0 otherwise
BOOT1 during
Reset
000 if BOOT1:0=11
at Reset, 111
otherwise
24
Controls whether P3.1/A1 is a port pin (0) or an address line (1).
27:25
Controls the number of pins among P3.23/A23/XCLK and P3.22:2/A2.22:2 that are
address lines:
000 = None
100 = A11:2 are address lines.
001 = A3:2 are address lines.
101 = A15:2 are address lines.
010 = A5:2 are address lines.
110 = A19:2 are address lines.
011 = A7:2 are address lines.
111 = A23:2 are address lines.
Reserved.
31:28
Table 8:
PINSEL2 bits
Pin function select register 2 (PINSEL2 - 0xE002C014)
…continued
Description
Reset value
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