NXP Semiconductors LPC24XX UM10237 - Manual (Page 172)

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User manual Rev. 04 — 26 August 2009 172 of 792
NXP Semiconductors
UM10237
Chapter 8: LPC24XX Pin configuration
P4[3]/A3 97 [1] U16 [1] I/O P4[3] — General purpose digital input/output pin.
I/O A3 — External memory address line 3.
P4[4]/A4 103 [1] R15 [1] I/O P4[4] — General purpose digital input/output pin.
I/O A4 — External memory address line 4.
P4[5]/A5 107 [1] R16 [1] I/O P4[5] — General purpose digital input/output pin.
I/O A5 — External memory address line 5.
P4[6]/A6 113 [1] M14 [1] I/O P4[6] — General purpose digital input/output pin.
I/O A6 — External memory address line 6.
P4[7]/A7 121 [1] L16 [1] I/O P4[7] — General purpose digital input/output pin.
I/O A7 — External memory address line 7.
P4[8]/A8 127 [1] J17 [1] I/O P4[8] — General purpose digital input/output pin.
I/O A8 — External memory address line 8.
P4[9]/A9 131 [1] H17 [1] I/O P4[9] — General purpose digital input/output pin.
I/O A9 — External memory address line 9.
P4[10]/A10 135 [1] G17 [1] I/O P4[10] — General purpose digital input/output pin.
I/O A10 — External memory address line 10.
P4[11]/A11 145 [1] F14 [1] I/O P4[11] — General purpose digital input/output pin.
I/O A11 — External memory address line 11.
P4[12]/A12 149 [1] C16 [1] I/O P4[12] — General purpose digital input/output pin.
I/O A12 — External memory address line 12.
P4[13]/A13 155 [1] B16 [1] I/O P4[13] — General purpose digital input/output pin.
I/O A13 — External memory address line 13.
P4[14]/A14 159 [1] B15 [1] I/O P4[14] — General purpose digital input/output pin.
I/O A14 — External memory address line 14.
P4[15]/A15 173 [1] A11 [1] I/O P4[15] — General purpose digital input/output pin.
I/O A15 — External memory address line 15.
P4[16]/A16 101 [1] U17 [1] I/O P4[16] — General purpose digital input/output pin.
I/O A16 — External memory address line 16.
P4[17]/A17 104 [1] P14 [1] I/O P4[17] — General purpose digital input/output pin.
I/O A17 — External memory address line 17.
P4[18]/A18 105 [1] P15 [1] I/O P4[18] — General purpose digital input/output pin.
I/O A18 — External memory address line 18.
P4[19]/A19 111 [1] P16 [1] I/O P4[19] — General purpose digital input/output pin.
I/O A19 — External memory address line 19.
P4[20]/A20/
SDA2/SCK1 109 [1] R17 [1] I/O P4[20] — General purpose digital input/output pin.
I/O A20 — External memory address line 20.
I/O SDA2 — I 2 C2 data input/output (this is not an open-drain pin).
I/O SCK1 — Serial Clock for SSP1.
Table 124. LPC2470/78 pin description …continued
Symbol Pin Ball Type Description