Z8F2480 datasheet(39/412 Pages) ZILOG

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PS025017-1222

P R E L I M I N A R Y

Pin Description

Z8 Encore! XP® F1680 Series

Product Specification

2.3.

Signal Descriptions

Table 4 describes the signals for each block on the F1680 Series MCU. To determine the

signals available for specific package styles, see the Pin Configurations chapter on page

10.

Table 4. Signal Descriptions

Signal Mnemonic I/O

Description

General-Purpose I/O Ports A–E

PA[7:0]

I/O

Port A: These pins are used for general-purpose I/O.

PB[5:0]

I/O

Port B: These pins are used for GPIO.

PC[7:0]

I/O

Port C: These pins are used for GPIO.

PD[7:0]

I/O

Port D: These pins are used for GPIO. PD0 is output only.

PE[6:0]

I/O

Port E: These pins are used for GPIO.

LIN-UART Controllers

TXD0/TXD1

Transmit Data 0–1: These signals are the transmit output from the UART0/1

and IrDA0/1.

RXD0/RXD1

Receive Data 0–1: These signals are the receive input for the UART0/1 and

IrDA0/1.

CTS0/CTS1

Clear To Send 0–1: These signals are the flow control input for the UART0/1.

DE0/DE1

Driver Enable 0–1: These signals allow automatic control of external RS-485

drivers. These signals are approximately the inverse of the TXE (Transmit

Empty) bit in the UART Status 0/1 register. The DE0/1 signal can be used to

ensure the external RS-485 driver is enabled when data is transmitted by the

UART0/1.

I2C Controller

SCL

I/O

I2C Serial Clock: The I2C Master supplies this signal. If the F1680 Series

MCU is the I2C Master, this pin is an output. If it is the I2C slave, this pin is an

input. When the GPIO pin is configured as an alternate function to enable the

SCL function, this pin is open-drain.

SDA

I/O

Serial Data: This open-drain pin transfers data between the I2C and an

external I2C Master/Slave. When the GPIO pin is configured as an alternate

function to enable the SDA function, this pin is open-drain.

ESPI Controller

I/O

Slave Select: This signal can be an output or an input. If the F1680 Series

MCU is the SPI master, this pin can be configured as the Slave Select output.

If it is the SPI slave, this pin is the input slave select.

Z8F2480 Datasheet(PDF) 39 Page - Zilog, Inc.

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