LPC2917/01 NXP [NXP Semiconductors], LPC2917/01 Datasheet - Page 24
LPC2917/01
Manufacturer Part Number
LPC2917/01
Description
ARM9 microcontroller with CAN and LIN
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.LPC291701.pdf
(86 pages)
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NXP Semiconductors
LPC2917_19_01_2
Preliminary data sheet
6.9.2 Pin description
6.9.3 Clock description
6.9.4 External memory timing diagrams
Table 11.
Table 12.
The external static-memory controller module in the LPC2917/2919/01 has the following
pins, which are combined with other functions on the port pins of the LPC2917/2919/01.
Table 13
Table 13.
The External Static-Memory Controller is clocked by CLK_SYS_SMC, see
A timing diagram for reading from external memory is shown in
between the wait-state settings is indicated with arrows.
32-bit
system
address bit
field
31 to 29
28 to 26
25 and 24
23 to 0
CS[2:0]
000
001
010
011
100
101
110
111
Symbol
EXTBUS CSx
EXTBUS BLSy
EXTBUS WE
EXTBUS OE
EXTBUS A[23:0] OUT
EXTBUS D[31:0] IN/OUT
shows the external memory controller pins.
External memory-bank address bit description
External static-memory controller banks
External memory controller pins
Symbol
BA[2:0]
CS[2:0]
-
A[23:0]
Bank
bank 0
bank 1
bank 2
bank 3
bank 4
bank 5
bank 6
bank 7
Direction
OUT
OUT
OUT
OUT
Rev. 02 — 17 June 2009
Description
external static-memory base address (three most significant bits);
the base address can be found in the memory map; see
field contains ‘010’ when addressing an external memory bank.
chip select address space for eight memory banks; see
always ‘00’; other values are ‘mirrors’ of the 16 MB bank address.
16 MB memory banks address space
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
LPC2917/01; LPC2919/01
ARM9 microcontroller with CAN and LIN
Figure
5. The relationship
© NXP B.V. 2009. All rights reserved.
Section
Ref.
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6.7.2.
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