LPC2420_60 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6.2 — 16 October 2013 68 of 87
NXP Semiconductors
LPC2420/2460
Flashless 16-bit/32-bit microcontroller
13. DAC electrical characteristics
14. Application information
14.1 Suggested boot memory interface solutions
‘a_m’ and ‘a_b’ in the following figures refer to the highest order address line of the
memory chip and the highest order microcontroller’s address line used respectively.
Table 18. DAC electrical characteristics
V
DDA
= 2.7 V to 3.6 V; T
amb
=
40
C to +85
C unless otherwise specified
Symbol Parameter Conditions Min Typ Max Unit
E
D
differential linearity error - 1- LSB
E
L(adj)
integral non-linearity - 1.5 - LSB
E
O
offset error - 0.6 - %
E
G
gain error - 0.6 - %
C
L
load capacitance - 200 - pF
R
L
load resistance 1 - - k
Fig 21. Booting from two 8-bit memory chips
002aad322
CE
OE
WE
IO[7:0]
A[a_m:0]
CS1
OE
BLS1
D[15:8]
A[a_b:1]
CE
OE
WE
IO[7:0]
A[a_m:0]
BLS0
D[7:0]
8-bit
MEMORY
8-bit
MEMORY
Fig 22. Booting from a single 16-bit memory chip
002aad323
CE
OE
WE
IO[15:0]
A[a_m:0]
WE
UB
LB
CS1
OE
D[15:0]
A[a_b:1]
BLS1
BLS0
16-bit
MEMORY
