HCS08 datasheet(32/374 Pages) NXP

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Chapter 2 Pins and Connections

MC9S08JM60 Series Data Sheet, Rev. 5

Freescale Semiconductor

2.3.7

USB Data Pins (USBDP, USBDN)

The USBDP (D+) and USBDN (D–) pins are the analog input/output lines to/from full-speed internal USB

transciever. An optional internal pullup resistor for the USBDP pin, RPUDP, is available.

2.3.8

General-Purpose I/O and Peripheral Ports

The MC9S08JM60 series of MCUs support up to 51 general-purpose I/O pins, which are shared with

on-chip peripheral functions (timers, serial I/O, ADC, keyboard interrupts, etc.).

When a port pin is configured as a general-purpose output or a peripheral uses the port pin as an output,

software can select one of two drive strengths and enable or disable slew rate control. When a port pin is

configured as a general-purpose input or a peripheral uses the port pin as an input, software can enable a

pullup device.

For information about controlling these pins as general-purpose I/O pins, see the Chapter 6, “Parallel

Input/Output.” For information about how and when on-chip peripheral systems use these pins, see the

appropriate module chapter.

Immediately after reset, all pins are configured as high-impedance general-purpose inputs with internal

pullup devices disabled.

HCS08 Folha de dados(PDF) 32 Page - NXP Semiconductors