LPC2377 datasheet(13/55 Pages) NXP

13 / 55 page

LPC2377_78_4

Product data sheet

Rev. 04 — 19 November 2008

13 of 55

NXP Semiconductors

LPC2377/78

Single-chip 16-bit/32-bit microcontroller

P4[8]/A8

88[1]

I/O

P4[8] — General purpose digital input/output pin.

I/O

A8 — External memory address line 8.

P4[9]/A9

91[1]

I/O

P4[9] — General purpose digital input/output pin.

I/O

A9 — External memory address line 9.

P4[10]/A10

94[1]

I/O

P4[10] — General purpose digital input/output pin.

I/O

A10 — External memory address line 10.

P4[11]/A11

101[1]

I/O

P4[11] — General purpose digital input/output pin.

I/O

A11 — External memory address line 11.

P4[12]/A12

104[1]

I/O

P4[12] — General purpose digital input/output pin.

I/O

A12 — External memory address line 12.

P4[13]/A13

108[1]

I/O

P4[13] — General purpose digital input/output pin.

I/O

A13 — External memory address line 13.

P4[14]/A14

110[1]

I/O

P4[14] — General purpose digital input/output pin.

I/O

A14 — External memory address line 14.

P4[15]/A15

120[1]

I/O

P4[15] — General purpose digital input/output pin.

I/O

A15 — External memory address line 15.

P4[24]/OE

127[1]

I/O

P4[24] — General purpose digital input/output pin.

OE — LOW active Output Enable signal.

P4[25]/BLS0

124[1]

I/O

P4[25] — General purpose digital input/output pin.

BLS0 — LOW active Byte Lane select signal 0.

P4[28]/MAT2[0]/

TXD3

118[1]

I/O

P4 [28] — General purpose digital input/output pin.

MAT2[0] — Match output for Timer 2, channel 0.

TXD3 — Transmitter output for UART3.

P4[29]/MAT2[1]/

RXD3

122[1]

I/O

P4[29] — General purpose digital input/output pin.

MAT2[1] — Match output for Timer 2, channel 1.

RXD3 — Receiver input for UART3.

P4[30]/CS0

130[1]

I/O

P4[30] — General purpose digital input/output pin.

CS0 — LOW active Chip Select 0 signal.

P4[31]/CS1

134[1]

I/O

P4[31] — General purpose digital input/output pin.

CS1 — LOW active Chip Select 1 signal.

ALARM

26[8]

ALARM — RTC controlled output. This is a 1.8 V pin. It goes HIGH when a RTC

alarm is generated.

USB_D

−2

I/O

USB_D

−2 — USB2 port bidirectional D− line. LPC2378 only. This pin is not

connected on the LPC2377.

DBGEN

6[1]

DBGEN — JTAG interface control signal. Also used for boundary scanning.

TDO

1[1]

TDO — Test Data out for JTAG interface.

TDI

3[1]

TDI — Test Data in for JTAG interface.

TMS

4[1]

TMS — Test Mode Select for JTAG interface.

TRST

5[1]

TRST — Test Reset for JTAG interface.

TCK

7[1]

TCK — Test Clock for JTAG interface. This clock must be slower than 1

⁄

6 of the CPU

clock (CCLK) for the JTAG interface to operate.

Table 3.

Pin description …continued

Symbol

Type

Description

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