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LPC2921 Datasheet(PDF) 5 Page - NXP Semiconductors |
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LPC2921 Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 83 page LPC2921_23_25_1 © NXP B.V. 2009. All rights reserved. Preliminary data sheet Rev. 01 — 15 June 2009 5 of 83 NXP Semiconductors LPC2921/2923/2925 ARM9 microcontroller with CAN, LIN, and USB 5. Pinning information 5.1 Pinning 5.2 Pin description 5.2.1 General description The LPC2921/2923/2925 uses three ports: port 1 with 32 pins, port 1 with 28 pins, and port 5 with 2 pins. Ports 4/3/2 are not used. The pin to which each function is assigned is controlled by the SFSP registers in the SCU. The functions combined on each port pin are shown in the pin description tables in this section. 5.2.2 LQFP100 pin assignment Fig 2. Pin configuration for SOT407-1 (LQFP100) LPC2921FBD100 LPC2923FBD100 LPC2925FBD100 75 51 1 25 002aae242 Table 3. LQFP100 pin assignment Pin name Pin Description Function 0 (default) Function 1 Function 2 Function 3 TDO 1[1] IEEE 1149.1 test data out P0[24]/TXD1/ TXDC1/SCS2[0] 2[1] GPIO 0, pin 24 UART1 TXD CAN1 TXD SPI2 SCS0 P0[25]/RXD1/ RXDC1/SDO2 3[1] GPIO 0, pin 25 UART1 RXD CAN1 RXD SPI2 SDO P0[26]/TXD1/SDI2 4[1] GPIO 0, pin 26 - UART1 TXD SPI2 SDI P0[27]/RXD1/SCK2 5[1] GPIO 0, pin 27 - UART1 RXD SPI2 SCK P0[28]/CAP0[0]/ MAT0[0] 6[1] GPIO 0, pin 28 - TIMER0 CAP0 TIMER0 MAT0 P0[29]/CAP0[1]/ MAT0[1] 7[1] GPIO 0, pin 29 - TIMER0 CAP1 TIMER0 MAT1 VDD(IO) 8 3.3 V power supply for I/O P0[30]/CAP0[2]/ MAT0[2] 9[1] GPIO 0, pin 30 - TIMER0 CAP2 TIMER0 MAT2 P0[31]/CAP0[3]/ MAT0[3] 10[1] GPIO 0, pin 31 - TIMER0 CAP3 TIMER0 MAT3 VSS(IO) 11 ground for I/O |
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