NXP Semiconductors LPC24XX UM10237 - Manual (Page 170)

UM10237_4 © NXP B.V. 2009. All rights reserved.
User manual Rev. 04 — 26 August 2009 170 of 792
NXP Semiconductors
UM10237
Chapter 8: LPC24XX Pin configuration
P3[15]/D15 28 [1] M1 [1] I/O P3[15] — General purpose digital input/output pin.
I/O D15 — External memory data line 15. On POR, this pin serves as the
BOOT1 pin (flashless parts only).
BOOT[1:0] = 00 selects 8-bit external memory on CS1.
BOOT[1:0] = 01 is reserved. Do not use.
BOOT[1:0] = 10 selects 32-bit external memory on CS1.
BOOT[1:0] = 11 selects 16-bit external memory on CS1.
P3[16]/D16/
PWM0[1]/TXD1 137 [1] F17 [1] I/O P3[16] — General purpose digital input/output pin.
I/O D16 — External memory data line 16.
O PWM0[1] — Pulse Width Modulator 0, output 1.
O TXD1 — Transmitter output for UART1.
P3[17]/D17/
PWM0[2]/RXD1 143 [1] F15 [1] I/O P3[17] — General purpose digital input/output pin.
I/O D17 — External memory data line 17.
O PWM0[2] — Pulse Width Modulator 0, output 2.
I RXD1 — Receiver input for UART1.
P3[18]/D18/
PWM0[3]/CTS1 151 [1] C15 [1] I/O P3[18] — General purpose digital input/output pin.
I/O D18 — External memory data line 18.
O PWM0[3] — Pulse Width Modulator 0, output 3.
I CTS1 — Clear to Send input for UART1.
P3[19]/D19/
PWM0[4]/DCD1 161 [1] B14 [1] I/O P3[19] — General purpose digital input/output pin.
I/O D19 — External memory data line 19.
O PWM0[4] — Pulse Width Modulator 0, output 4.
I DCD1 — Data Carrier Detect input for UART1.
P3[20]/D20/
PWM0[5]/DSR1 167 [1] A13 [1] I/O P3[20] — General purpose digital input/output pin.
I/O D20 — External memory data line 20.
O PWM0[5] — Pulse Width Modulator 0, output 5.
I DSR1 — Data Set Ready input for UART1.
P3[21]/D21/
PWM0[6]/DTR1 175 [1] C10 [1] I/O P3[21] — General purpose digital input/output pin.
I/O D21 — External memory data line 21.
O PWM0[6] — Pulse Width Modulator 0, output 6.
O DTR1 — Data Terminal Ready output for UART1.
P3[22]/D22/
PCAP0[0]/RI1 195 [1] C6 [1] I/O P3[22] — General purpose digital input/output pin.
I/O D22 — External memory data line 22.
I PCAP0[0] — Capture input for PWM0, channel 0.
I RI1 — Ring Indicator input for UART1.
P3[23]/D23/
CAP0[0]/
PCAP1[0] 65 [1] T6 [1] I/O P3[23] — General purpose digital input/output pin.
I/O D23 — External memory data line 23.
I CAP0[0] — Capture input for Timer 0, channel 0.
I PCAP1[0] — Capture input for PWM1, channel 0.
Table 124. LPC2470/78 pin description …continued
Symbol Pin Ball Type Description