NXP Semiconductors LPC24XX UM10237 - Manual (Page 161)

UM10237_4 © NXP B.V. 2009. All rights reserved.
User manual Rev. 04 — 26 August 2009 161 of 792
NXP Semiconductors
UM10237
Chapter 8: LPC24XX Pin configuration
P0[19]/DSR1/
MCICLK/SDA1 122 [1] L17 [1] I/O P0[19] — General purpose digital input/output pin.
I DSR1 — Data Set Ready input for UART1.
O MCICLK — Clock output line for SD/MMC interface.
I/O SDA1 — I 2 C1 data input/output (this is not an open-drain pin).
P0[20]/DTR1/
MCICMD/SCL1 120 [1] M17 [1] I/O P0[20] — General purpose digital input/output pin.
O DTR1 — Data Terminal Ready output for UART1.
I/O MCICMD — Command line for SD/MMC interface.
I/O SCL1 — I 2 C1 clock input/output (this is not an open-drain pin).
P0[21]/RI1/
MCIPWR/RD1 118 [1] M16 [1] I/O P0[21] — General purpose digital input/output pin.
I RI1 — Ring Indicator input for UART1.
O MCIPWR — Power Supply Enable for external SD/MMC power supply.
I RD1 — CAN1 receiver input.
P0[22]/RTS1/
MCIDAT0/TD1 116 [1] N17 [1] I/O P0[22] — General purpose digital input/output pin.
O RTS1 — Request to Send output for UART1.
I/O MCIDAT0 — Data line 0 for SD/MMC interface.
O TD1 — CAN1 transmitter output.
P0[23]/AD0[0]/
I2SRX_CLK/
CAP3[0] 18 [2] H1 [2] I/O P0[23] — General purpose digital input/output pin.
I AD0[0] — A/D converter 0, input 0.
I/O I2SRX_CLK — Receive Clock. It is driven by the master and received by
the slave. Corresponds to the signal SCK in the I
2 S-bus specification.
I CAP3[0] — Capture input for Timer 3, channel 0.
P0[24]/AD0[1]/
I2SRX_WS/
CAP3[1] 16 [2] G2 [2] I/O P0[24] — General purpose digital input/output pin.
I AD0[1] — A/D converter 0, input 1.
I/O I2SRX_WS — Receive Word Select. It is driven by the master and
received by the slave. Corresponds to the signal WS in the I
2 S-bus
specification.
I CAP3[1] — Capture input for Timer 3, channel 1.
P0[25]/AD0[2]/
I2SRX_SDA/
TXD3 14 [2] F1 [2] I/O P0[25] — General purpose digital input/output pin.
I AD0[2] — A/D converter 0, input 2.
I/O I2SRX_SDA — Receive data. It is driven by the transmitter and read by
the receiver. Corresponds to the signal SD in the I
2 S-bus specification.
O TXD3 — Transmitter output for UART3.
P0[26]/AD0[3]/
AOUT/RXD3 12 [2][3] E1 [2][3] I/O P0[26] — General purpose digital input/output pin.
I AD0[3] — A/D converter 0, input 3.
O AOUT — D/A converter output.
I RXD3 — Receiver input for UART3.
P0[27]/SDA0 50 [4] T1 [4] I/O P0[27] — General purpose digital input/output pin.
I/O SDA0 — I 2 C0 data input/output. Open-drain output (for I 2 C-bus
compliance).
P0[28]/SCL0 48 [4] R3 [4] I/O P0[28] — General purpose digital input/output pin.
I/O SCL0 — I 2 C0 clock input/output. Open-drain output (for I 2 C-bus
compliance).
Table 124. LPC2470/78 pin description …continued
Symbol Pin Ball Type Description