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LPC2141 Datasheet(PDF) 10 Page - NXP Semiconductors |
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LPC2141 Datasheet(HTML) 10 Page - NXP Semiconductors |
10 / 40 page LPC2141_42_44_46_48_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 17 November 2008 10 of 40 NXP Semiconductors LPC2141/42/44/46/48 Single-chip 16-bit/32-bit microcontrollers P0.31/UP_LED/ CONNECT 17[6] O P0.31 — General purpose output only digital pin (GPO). O UP_LED — USB GoodLink LED indicator. It is LOW when device is configured (non-control endpoints enabled). It is HIGH when the device is not configured or during global suspend. O CONNECT — Signal used to switch an external 1.5 k Ω resistor under the software control. Used with the SoftConnect USB feature. Important: This is an digital output only pin. This pin MUST NOT be externally pulled LOW when RESET pin is LOW or the JTAG port will be disabled. P1.0 to P1.31 I/O Port 1: Port 1 is a 32-bit bidirectional I/O port with individual direction controls for each bit. The operation of port 1 pins depends upon the pin function selected via the pin connect block. Pins 0 through 15 of port 1 are not available. P1.16/ TRACEPKT0 16[6] I/O P1.16 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O TRACEPKT0 — Trace Packet, bit 0. P1.17/ TRACEPKT1 12[6] I/O P1.17 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O TRACEPKT1 — Trace Packet, bit 1. P1.18/ TRACEPKT2 8[6] I/O P1.18 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O TRACEPKT2 — Trace Packet, bit 2. P1.19/ TRACEPKT3 4[6] I/O P1.19 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O TRACEPKT3 — Trace Packet, bit 3. P1.20/ TRACESYNC 48[6] I/O P1.20 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O TRACESYNC — Trace Synchronization. Note: LOW on this pin while RESET is LOW enables pins P1.25:16 to operate as Trace port after reset. P1.21/ PIPESTAT0 44[6] I/O P1.21 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O PIPESTAT0 — Pipeline Status, bit 0. P1.22/ PIPESTAT1 40[6] I/O P1.22 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O PIPESTAT1 — Pipeline Status, bit 1. P1.23/ PIPESTAT2 36[6] I/O P1.23 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O PIPESTAT2 — Pipeline Status, bit 2. P1.24/ TRACECLK 32[6] I/O P1.24 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. O TRACECLK — Trace Clock. P1.25/EXTIN0 28[6] I/O P1.25 — General purpose input/output digital pin (GPIO). Standard I/O port with internal pull-up. I EXTIN0 — External Trigger Input. Table 3. Pin description …continued Symbol Pin Type Description |
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