lpc2478fet208 NXP Semiconductors, lpc2478fet208 Datasheet - Page 58

• Manufacturer Part Number: lpc2478fet208
• Description: Single-chip 16-bit/32-bit Micro; 512 Kb Flash, Ethernet, Can, Lcd, Usb 2.0 Device/host/otg, External Memory Interface Semiconductors
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 11.
C
LPC2478_1
Preliminary data sheet
Symbol
Common to read and write cycles
t
t
t
t
Read cycle parameters
t
t
t
t
t
t
t
t
t
t
t
Write cycle parameters
t
t
t
t
t
t
t
t
t
t
t
CHAV
CHCSL
CHCSH
CHANV
CSLAV
OELAV
CSLOEL
am
am(ibr)
am(sbr)
h(D)
CSHOEH
OEHANV
CHOEL
CHOEH
AVCSL
CSLDV
CSLWEL
CSLBLSL
WELDV
CSLDV
WELWEH
BLSLBLSH
WEHANV
WEHDNV
BLSHANV
L
= 25 pF, T
External memory interface dynamic characteristics
Parameter
XCLK HIGH to address valid
time
XCLK HIGH to CS LOW time
XCLK HIGH to CS HIGH
time
XCLK HIGH to address
invalid time
CS LOW to address valid
time
OE LOW to address valid
time
CS LOW to OE LOW time
memory access time
memory access time (initial
burst-ROM)
memory access time
(subsequent burst-ROM)
data hold time
CS HIGH to OE HIGH time
OE HIGH to address invalid
time
XCLK HIGH to OE LOW time
XCLK HIGH to OE HIGH
time
address valid to CS LOW
time
CS LOW to data valid time
CS LOW to WE LOW time
CS LOW to BLS LOW time
WE LOW to data valid time
CS LOW to data valid time
WE LOW to WE HIGH time
BLS LOW to BLS HIGH time
WE HIGH to address invalid
time
WE HIGH to data invalid time
BLS HIGH to address invalid
time
amb
= 40
q
C.
Conditions
Rev. 01 — 6 July 2007
[2][3]
[2][3]
[2][4]
[1]
[1]
[5]
[1]
[2]
[2]
[2]
[2]
[2]
Min
-
-
-
-
5
5
5
(T
(20)
(T
(20)
T
0
5
5
5
5
T
5
5
5
5
5
T
T
T
(2 u T
T
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
+ (20)
 10
u (1 + WST2)  5
u (1 + WST2)  5
 5
 5
u (2 + WST1)) +
u (2 + WST1)) +
)  5
Typ Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Fast communication chip
10
10
10
10
+10
+10
+5
-
-
-
-
+5
+5
+5
+5
-
+5
+5
+5
+5
+5
T
WST2) + 5
T
(1 + WST2) + 5
T
(2 u T
T
cy(CCLK)
cy(CCLK)
cy(CCLK)
cy(CCLK)
LPC2478
© NXP B.V. 2007. All rights reserved.
cy(CCLK)
u (1 +
u
+ 5
+ 5
) + 5 ns
58 of 76
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns