UM10237_2 © NXP B.V. 2008. All rights reserved.
User manual Rev. 02 — 19 December 2008 186 o f 792
NXP Semiconductors UM10237
Chapter 9: LPC24XX Pin connect
5.9 Pin Function Select Register 8 (PINSEL8 - 0xE002 C020)

The PINSEL8 register controls the functions of the pins as per the settings listed in

Table9–141. The direction control bit in the FIO4DIR register is effective only when the

GPIO function is selected for a pin. For other functions, direction is controlled

automatically.
9:8 P3[20] Reserved Reserved Reserved Reserved 00
11:10 P3[21] Reserved Reserved Reserved Reserved 00
13:12 P3[22] Reserved Reserved Reserved Reserved 00
15:14 P3[23] GPIO Port 3.23 Reserved CAP0[0] PCAP1[0] 00
17:16 P3[24] GPIO Port 3.24 Reserved CAP0[1] PWM1[1] 00
19:18 P3[25] GPIO Port 3.25 Reserved MAT0[0] PWM1[2] 00
21:20 P3[26] GPIO Port 3.26 Reserved MAT0[1] PWM1[3] 00
23:22 P3[27] Reserved Reserved Reserved Reserved 00
25:24 P3[28] Reserved Reserved Reserved Reserved 00
27:26 P3[29] Reserved Reserved Reserved Reserved 00
29:28 P3[30] Reserved Reserved Reserved Reserved 00
31:30 P3[31] Reserved Reserved Reserved Reserved 00
Table 140. LPC2452 0/60/68/70/78 pin function select register 7 (PINSEL7 - address
0xE002 C01C) bit description
PINSEL7 Pin
name Function when
00 Function
when 01 Function
when 10 Function
when 11 Reset
value
1:0 P3[16] GPIO Port 3.16 D16 PWM0[1] TXD1 00
3:2 P3[17] GPIO Port 3.17 D17 PWM0[2] RXD1 00
5:4 P3[18] GPIO Port 3.18 D18 PWM0[3] CTS1 00
7:6 P3[19] GPIO Port 3.19 D19 PWM0[4] DCD1 00
9:8 P3[20] GPIO Port 3.20 D20 PWM0[5] DSR1 00
11:10 P3[21] GPIO Port 3.21 D21 PWM0[6] DR1 00
13:12 P3[22] GPIO Port 3.22 D22 PCAP0[0] RI1 00
15:14 P3[23] GPIO Port 3.23 D23 CAP0[0] PCAP1[0] 00
17:16 P3[24] GPIO Port 3.24 D24 CAP0[1] PWM1[1] 00
19:18 P3[25] GPIO Port 3.25 D25 MAT0[0] PWM1[2] 00
21:20 P3[26] GPIO Port 3.26 D26 MAT0[1] PWM1[3] 00
23:22 P3[27] GPIO Port 3.27 D27 CAP1[0] PWM1[4] 00
25:24 P3[28] GPIO Port 3.28 D28 CAP1[1] PWM1[5] 00
27:26 P3[29] GPIO Port 3.29 D29 MAT1[0] PWM1[6] 00
29:28 P3[30] GPIO Port 3.30 D30 MAT1[1] RTS1 00
31:30 P3[31] GPIO Port 3.31 D31 MAT1[2] Reserved 00
Table 139. LPC2458 pin function select register 7 (PINSEL7 - address 0xE002 C01C) bit
description
PINSEL7 Pin
name Function when
00 Function
when 01 Function
when 10 Function
when 11 Reset
value