LPC1342FHN33,551 NXP Semiconductors, LPC1342FHN33,551 Datasheet - Page 243
LPC1342FHN33,551
Manufacturer Part Number
LPC1342FHN33,551
Description
IC MCU 32BIT 16KB FLASH 33HVQFN
Manufacturer
NXP Semiconductors
Series
LPC13xxr
Specifications of LPC1342FHN33,551
Program Memory Type
FLASH
Program Memory Size
16KB (16K x 8)
Package / Case
33-VQFN Exposed Pad, 33-HVQFN, 33-SQFN, 33-DHVQFN
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
72MHz
Connectivity
I²C, Microwire, SPI, SSI, SSP, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
28
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
LPC13
Core
ARM Cortex M3
Data Bus Width
32 bit
Data Ram Size
4 KB
Interface Type
I2C, UART
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
28
Number Of Timers
4
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
33HVQFN EP
Device Core
ARM Cortex M3
Family Name
LPC1000
Maximum Speed
72 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-4946
935289656551
935289656551
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UM10375
User manual
13.8.2.3 SPI format with CPOL=0,CPHA=1
13.8.2.4 SPI format with CPOL = 1,CPHA = 0
In the case of a single word transmission, after all bits of the data word have been
transferred, the SSEL line is returned to its idle HIGH state one SCK period after the last
bit has been captured.
However, in the case of continuous back-to-back transmissions, the SSEL signal must be
pulsed HIGH between each data word transfer. This is because the slave select pin
freezes the data in its serial peripheral register and does not allow it to be altered if the
CPHA bit is logic zero. Therefore the master device must raise the SSEL pin of the slave
device between each data transfer to enable the serial peripheral data write. On
completion of the continuous transfer, the SSEL pin is returned to its idle state one SCK
period after the last bit has been captured.
The transfer signal sequence for SPI format with CPOL = 0, CPHA = 1 is shown in
Figure
In this configuration, during idle periods:
If the SSP is enabled and there is valid data within the transmit FIFO, the start of
transmission is signified by the SSEL master signal being driven LOW. Master’s MOSI pin
is enabled. After a further one half SCK period, both master and slave valid data is
enabled onto their respective transmission lines. At the same time, the SCK is enabled
with a rising edge transition.
Data is then captured on the falling edges and propagated on the rising edges of the SCK
signal.
In the case of a single word transfer, after all bits have been transferred, the SSEL line is
returned to its idle HIGH state one SCK period after the last bit has been captured.
For continuous back-to-back transfers, the SSEL pin is held LOW between successive
data words and termination is the same as that of the single word transfer.
Single and continuous transmission signal sequences for SPI format with CPOL=1,
CPHA=0 are shown in
Fig 39. SPI frame format with CPOL=0 and CPHA=1
•
•
•
The CLK signal is forced LOW.
SSEL is forced HIGH.
The transmit MOSI/MISO pad is in high impedance.
39, which covers both single and continuous transfers.
All information provided in this document is subject to legal disclaimers.
SSEL
MOSI
MISO
SCK
Figure
Rev. 2 — 7 July 2010
Q
40.
MSB
MSB
4 to 16 bits
LSB
LSB
Chapter 13: LPC13xx SSP
Q
UM10375
© NXP B.V. 2010. All rights reserved.
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