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P87LPC779FDH Datasheet(PDF) 5 Page - NXP Semiconductors |
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P87LPC779FDH Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 74 page Philips Semiconductors P87LPC779 CMOS single-chip 8-bit microcontroller Product data Rev. 02 — 03 May 2004 5 of 74 9397 750 13213 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. 5. Pinning information 5.1 Pinning 5.2 Pin description Fig 3. 20 pin DIP and SO configuration. handbook, halfpage 002aaa814 1 2 3 4 5 6 7 8 9 10 CMP2/P0.0 DAC0/P1.7 DAC1/P1.6 RST/P1.5 VSS X1/P2.1 X2/CLKOUT/P2.0 INT1/P1.4 SDA/INT0/P1.3 SCL/T0/P1.2 P0.1/CIN2B P0.2/CIN2A P0.3/CIN1B/AD0 P0.4/CIN1A/AD1 P0.5/CMPREF/AD2 VDD P0.6/CMP1/AD3 P0.7/T1 P1.0/TxD P1.1/RxD 20 19 18 17 16 15 14 13 12 11 Table 2: Pin description Symbol Pin Type Description P0.0 - P0.7 1, 20-16, 14, 13 I/O Port 0: Port 0 is an 8-bit I/O port with a user-configurable output type. Port 0 latches are configured in the quasi-bidirectional mode and have either ones or zeros written to them during reset, as determined by the PRHI bit in the UCFG1 configuration byte. The operation of port 0 pins as inputs and outputs depends upon the port configuration selected. Each port pin is configured independently. Refer to Section 8.9 “I/O ports” and Table 55 “DC electrical characteristics” for details. The Keypad Interrupt feature operates with Port 0 pins. Port 0 also provides various special functions as described below: P0.0 1 O CMP2 — Comparator 2 output. P0.1 20 I CIN2B — Comparator 2 positive input B. P0.2 19 I CIN2A — Comparator 2 positive input A. P0.3 18 I CIN1B — Comparator 1 positive input B. I AD0 — A/D channel 0 input. P0.4 17 I CIN1A — Comparator 1 positive input A. I AD1 — A/D channel 1 input. P0.5 16 I CMPREF — Comparator reference (negative) input. I AD2 — A/D channel 2 input. P0.6 14 O CMP1 — Comparator 1 output. I AD3 — A/D channel 3 input. P0.7 13 I/O T1 — Timer/counter 1 external count input or overflow output. |
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