LPC1776FET180 NXP Semiconductors, LPC1776FET180 Datasheet - Page 85
LPC1776FET180
Manufacturer Part Number
LPC1776FET180
Description
The LPC1776 is a Cortex-M3 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 120 MHz
Manufacturer
NXP Semiconductors
Datasheet
1.LPC1774FBD144.pdf
(120 pages)
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[2]
[3]
LPC178X_7X
Objective data sheet
Fig 18. Dynamic external memory interface signal timing (read access)
The data input set-up time has to be selected with the following margin:
t
The data input hold time has to be selected with the following margin:
t
su(D)
h(D)
EMC_DQMOUTx
+ SDRAM access time - board delay time - delay time of feedback clock 0.
+ delay time of feedback clock SDRAM access time board delay time 0.
EMC_DYCSx
EMC_CLKx
EMC_RAS
EMC_CAS
EMC_WE
EMC_Ax
EMC_Dx
Table 20.
C
[1]
Symbol Parameter Conditions
t
d
L
= 30 pF, T
T
The programmable delay blocks are controlled by the EMCDLYCTL register in the EMC register block. All
delay times are incremental delays for each element starting from delay block 0. See the LPC178x/7x user
manual for details.
cy(clk)
t
t
t
d(CS)
d(RAS)
d(A)
delay time
Dynamic characteristics: Dynamic external memory interface programmable
clock delays
amb
=
All information provided in this document is subject to legal disclaimers.
t
t
t
h(CS)
h(RAS)
h(A)
40
Rev. 3 — 27 December 2011
Programmable delay block 0
(CMDDLY or CLKOUTnDLY bit 0 = 1)
Programmable delay block 1
(CMDDLY or CLKOUTnDLY bit 1 = 1)
Programmable delay block 2
(CMDDLY or CLKOUTnDLY bit 2 = 1)
Programmable delay block 3
(CMDDLY or CLKOUTnDLY bit 3 = 1)
Programmable delay block 4
(CMDDLY or CLKOUTnDLY bit 4 = 1)
C to 85
t
d(CAS)
C, V
DD(REG)(3V3)
t
h(CAS)
= 3.0 V to 3.6 V.Values guaranteed by design.
32-bit ARM Cortex-M3 microcontroller
t
d(DQM)
t
su(D)
[1]
[1]
[1]
[1]
[1]
t
h(D)
Min
0.1
0.2
0.5
1.2
2.4
LPC178x/7x
Typ
0.1
0.3
0.8
1.8
3.7
© NXP B.V. 2011. All rights reserved.
002aag205
Max
0.2
0.5
1.3
2.9
6.0
t
h(DQM)
85 of 120
Unit
ns
ns
ns
ns
ns
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