LPC2220 PHILIPS [NXP Semiconductors], LPC2220 Datasheet - Page 37

• Manufacturer Part Number: LPC2220
• Description: 16/32-bit ARM microcontrollers; flashless with 64 kB, with 10-bit ADC and external memory interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 14:
C
[1]
9397 750 14061
Product data sheet
Symbol
t
t
t
t
t
t
Write cycle parameters
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AVDV
STHDNV
CSHOEH
OEHANV
CHOEL
CHOEH
AVCSLW
CSLDVW
CSLWEL
CSLBLSL
WELDV
CSLDV
WELWEH
BLSLBLSH
WEHANV
WEHDNV
BLSHANV
BLSHDNV
CHDV
CHWEL
CHHBLSL
CHWEH
CHBLSH
CHDNV
L
= 25 pF, T
Except on initial access, in which case the address is set up T
Parameter
memory access time (latest of
address valid, CS LOW, OE
LOW to data valid)
burst-ROM initial memory
access time (latest of address
valid, CS LOW, OE LOW to
data valid)
burst-ROM subsequent
memory access time (address
valid to data valid)
data hold time (earliest of CS
HIGH, OE HIGH, address
change to data invalid)
CS HIGH to OE HIGH
OE HIGH to address invalid
XCLK HIGH to OE LOW
XCLK HIGH to OE HIGH
address valid to CS LOW
CS LOW to data valid
CS LOW to WE LOW
CS LOW to BLS LOW
WE LOW to data valid
CS LOW to data valid
WE LOW to WE HIGH
BLS LOW to BLS HIGH
WE HIGH to address invalid
WE HIGH to data invalid
BLS HIGH to address invalid
BLS HIGH to data invalid
XCLK HIGH to data valid
XCLK HIGH to WE LOW
XCLK HIGH to BLS LOW
XCLK HIGH to WE HIGH
XCLK HIGH to BLS HIGH
XCLK HIGH to data invalid
External memory interface dynamic characteristics
amb
= 40 C
Conditions
16/32-bit ARM microcontrollers with external memory interface
Rev. 02— 30 May 2005
[1]
cclk
Min
T
T
T
0
T
T
T
T
(2
T
(2
-
-
-
-
-
-
5
5
5
5
5
5
5
5
5
earlier.
cclk
cclk
cclk
cclk
cclk
cclk
cclk
cclk
T
T
+ ( 20)
cclk
cclk
…continued
(2 + WST1) + ( 20) -
(2 + WST1) + ( 20) -
10
(1 + WST2)
(1 + WST2)
5
5
)
)
5
5
5
5
Typ Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
LPC2210/2220
-
-
-
-
5
5
5
5
-
5
5
5
5
5
T
T
T
(2
T
(2
10
10
10
10
10
10
cclk
cclk
cclk
cclk
T
T
+ 5
+ 5
cclk
cclk
(1 + WST2) + 5 ns
(1 + WST2) + 5 ns
) + 5
) + 5
37 of 49
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