LPC2458FET180,551 NXP Semiconductors, LPC2458FET180,551 Datasheet - Page 454
LPC2458FET180,551
Manufacturer Part Number
LPC2458FET180,551
Description
IC ARM7 MCU FLASH 512K 180TFBGA
Manufacturer
NXP Semiconductors
Series
LPC2400r
Specifications of LPC2458FET180,551
Core Processor
ARM7
Core Size
16/32-Bit
Speed
72MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
136
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
98K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
180-TFBGA
Processor Series
LPC24
Core
ARM7TDMI-S
Data Bus Width
32 bit
Data Ram Size
98 KB
Interface Type
CAN, Ethernet, I2C, I2S, IrDA, SPI, SSP, UART, USB
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
136
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, SAB-TFBGA180
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
On-chip Dac
10 bit, 1 Channel
Package
180TFBGA
Device Core
ARM7TDMI-S
Family Name
LPC2000
Maximum Speed
72 MHz
For Use With
622-1023 - BOARD SCKT ADAPTER FOR TFBGA180622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
568-4258
935282454551
LPC2458FET180-S
935282454551
LPC2458FET180-S
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
LPC2458FET180,551
Manufacturer:
MICROCHIP
Quantity:
1 103
Company:
Part Number:
LPC2458FET180,551
Manufacturer:
NXP Semiconductors
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UM10237_4
User manual
Fig 68. Auto-RTS Functional Timing
UART1 Rx
UART1 Rx
UART1 Rx
FIFO read
FIFO level
RTS1 pin
4.9.1 Auto-RTS
4.9 Auto-flow control
start
N-1
byte N
Table 406. UART1 Modem Control Register (U1MCR - address 0xE001 0010) bit description
If auto-RTS mode is enabled the UART1‘s receiver FIFO hardware controls the RTS1
output of the UART1. If the auto-CTS mode is enabled the UART1‘s U1TSR hardware will
only start transmitting if the CTS1 input signal is asserted.
The auto-RTS function is enabled by setting the RTSen bit. Auto-RTS data flow control
originates in the U1RBR module and is linked to the programmed receiver FIFO trigger
level. If auto-RTS is enabled, the data-flow is controlled as follows:
When the receiver FIFO level reaches the programmed trigger level, RTS1 is deasserted
(to a high value). It is possible that the sending UART sends an additional byte after the
trigger level is reached (assuming the sending UART has another byte to send) because it
might not recognize the deassertion of RTS1 until after it has begun sending the additional
byte. RTS1 is automatically reasserted (to a low value) once the receiver FIFO has
reached the previous trigger level. The reassertion of RTS1 signals to the sending UART
to continue transmitting data.
If Auto-RTS mode is disabled, the RTSen bit controls the RTS1 output of the UART1. If
Auto-RTS mode is enabled, hardware controls the RTS1 output, and the actual value of
RTS1 will be copied in the RTS Control bit of the UART1. As long as Auto-RTS is enabled,
the value of the RTS Control bit is read-only for software.
Example: Suppose the UART1 operating in type 550 has trigger level in U1FCR set to 0x2
then if Auto-RTS is enabled the UART1 will deassert the RTS1 output as soon as the
receive FIFO contains 8 bytes
reasserted as soon as the receive FIFO hits the previous trigger level: 4 bytes.
Bit
6
7
CTSen
Symbol
RTSen
stop
start
N
Value Description
0
1
0
1
bits0..7
N-1
Rev. 04 — 26 August 2009
Disable auto-rts flow control.
Enable auto-rts flow control.
Disable auto-cts flow control.
Enable auto-cts flow control.
stop
N-2
(Table 17–404 on page
N-1
N-2
M+2
452). The RTS1 output will be
Chapter 17: LPC24XX UART1
M+1
M
start
UM10237
© NXP B.V. 2009. All rights reserved.
bits0..7
M-1
454 of 792
stop
Reset
value
0
0
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