UM10237_2 © NXP B.V. 2008. All rights reserved.
User manual Rev. 02 — 19 December 2008 11 of 792
NXP Semiconductors UM10237
Chapter 1: LPC24XX Introductory information
9. LPC2458 block diagram

Fig 1. LPC2458 block diagram

power domain 2

LPC2458

A[19:0]
D[15:0]
EXTERNAL
MEMORY
CONTROLLER
ALARM
002aad093
PWM0, PWM1
ARM7TDMI-S
PLL
EINT3 to EINT0
FLASH
P3, P4
P0, P1, P2,
LEGACY GPI/O
64 PINS TOTAL
P0, P1
SCK, SCK0
MOSI, MOSI0
SSEL, SSEL0
SCK1
MOSI1
MISO1
SSEL1
SCL0, SCL1, SCL2
I2SRX_CLK
I2STX_CLK
I2SRX_WS
I2STX_WS
8 × AD0
RTCX1
RTCX2
MCICLK, MCIPWR
RXD0, RXD2, RXD3
TXD1
RXD1
RD1, RD2
TD1, TD2
CAN1, CAN2
port 1
XTAL1
TCK TDO
EXTIN0
XTAL2
RESET
TRST
TDITMS
HIGH-SPEED
GPI/O
136 PINS
TOTAL
port 2
64 kB
SRAM 512 kB
FLASH
INTERNAL
CONTROLLERS
TEST/DEBUG
INTERFACE
EMULATION
TRACE MODULE
trace signals
AHB
BRIDGE AHB
BRIDGE
ETHERNET
MAC WITH
DMA
16 kB
SRAM MASTER
PORT AHB TO
AHB BRIDGESLAVE
PORT
system
clock
SYSTEM
FUNCTIONS
INTERNAL RC
OSCILLATOR
VDDA
VDD(3V3)
VDD(DCDC)(3V3)
VREF
VSSA, VSSIO, VSSCORE
VIC 16 kB
SRAM
USB DEVICE/
HOST/OTG WITH
4 kB RAM AND DMA
GP DMA
CONTROLLER
I2S INTERFACE
SPI, SSP0 INTERFACE
I2SRX_SDA
I2STX_SDA
MISO, MISO0
SSP1 INTERFACE
SD/MMC CARD
INTERFACE MCICMD,
MCIDAT[3:0]
TXD0, TXD2, TXD3
UART0, UART2, UART3
UART1 DTR1, RTS1
DSR1, CTS1, DCD1,
RI1
I2C0, I2C1, I2C2 SDA0, SDA1, SDA2
EXTERNAL INTERRUPTS
CAPTURE/COMPARE
TIMER0/TIMER1/
TIMER2/TIMER3
A/D CONVERTER
D/A CONVERTER
2 kB BATTERY RAM
RTC
OSCILLATOR
REAL-
TIME
CLOCK
WATCHDOG TIMER
SYSTEM CONTROL
2 × CAP0/CAP1/
CAP2/CAP3
4 × MAT2,
2 × MAT3,
2 × MAT1/MAT0
6 × PWM0, PWM1
1 × PCAP0,
2 × PCAP1
AOUT
VBAT
AHB TO
APB BRIDGE
SRAM
MII/RMII
VBUS
DBGEN
P0, P2
AHB2 AHB1
control lines