Product data

LPC3130_3131 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2 — 29 May 2012 55 of 67
NXP Semiconductors
LPC3130/3131
Low-cost, low-power ARM926EJ-S microcontrollers
9.5 Crystal oscillator
9.6 SPI
Remark: Note that the signal names SCK, MISO, and MOSI correspond to signals on
pins SPI_SCK, SPI_MOSI, and SPI_MISO in the following SPI timing diagrams.
Table 21: Dynamic characteristics: crystal oscillator
Symbol Parameter Conditions Min Typ Max Unit
f
osc
oscillator frequency 10 12 25 MHz

clk
clock duty cycle 45 50 55 %
C
xtal
crystal capacitance input; on pin
FFAST_IN
-- 2pF
output; on pin
FFAST_OUT
- - 0.74 pF
t
startup
start-up time - 500 - s
P
drive
drive power 100 - 500 W
Table 22. Dynamic characteristics of SPI pins
T
amb
=  40  C to +85  C for industrial applications
Symbol Parameter Min Typ Max Unit
SPI
master
T
SPICYC
SPI cycle time 22.2 - - ns
t
SPICLKH
SPICLK HIGH time 11.09 - 11.14 ns
t
SPICLKL
SPICLK LOW time 11.09 - 11.14 ns
t
SPIQV
SPI data output valid time - - 14 ns
t
SPIOH
SPI output data hold time 9.9 - - ns
SPI slave
t
SPIOH
SPI output data hold time 9.9 - - ns
Fig 19. SPI master timing (CPHA = 1)
SCK (CPOL = 0)
MOSI
MISO
002aad986
T
SPICYC
t
SPICLKH
t
SPICLKL
t
SPIDSU
t
SPIDH
t
SPIQV
DATA VALID DATA VALID
t
SPIOH
SCK (CPOL = 1)
DATA VALID
DATA VALID