Z8F3201 datasheet(32/246 Pages) ZILOG

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PS017610-0404

Signal and Pin Descriptions

Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x

Z8 Encore!®

UART Controllers

TXD0 / TXD1

Transmit Data. These signals are the transmit outputs from the UARTs. The TXD

signals are multiplexed with general-purpose I/O pins.

RXD0 / RXD1

Receive Data. These signals are the receiver inputs for the UARTs and IrDAs. The

RXD signals are multiplexed with general-purpose I/O pins.

CTS0 / CTS1

Clear To Send. These signals are control inputs for the UARTs. The CTS signals

are multiplexed with general-purpose I/O pins.

Timers (Timer 3 is unavailable in the 40-and 44-pin packages)

T0OUT / T1OUT/

T2OUT / T3OUT

Timer Output 0-3. These signals are output pins from the timers. The Timer

Output signals are multiplexed with general-purpose I/O pins. T2OUT is not

supported in the 40-pin package. T3OUT is not supported in the 40- and 44-pin

packages.

T0IN / T1IN/

T2IN / T3IN

Timer Input 0-3. These signals are used as the capture, gating and counter inputs.

The Timer Input signals are multiplexed with general-purpose I/O pins. T3IN is

not supported in the 40- and 44-pin packages.

Analog

ANA[11:0]

Analog Input. These signals are inputs to the analog-to-digital converter (ADC).

The ADC analog inputs are multiplexed with general-purpose I/O pins.

VREF

Analog-to-digital converter reference voltage input. The VREF pin should be left

unconnected (or capacitively coupled to analog ground) if the internal voltage

reference is selected as the ADC reference voltage.

Oscillators

XIN

External Crystal Input. This is the input pin to the crystal oscillator. A crystal can

be connected between it and the

XOUT pin to form the oscillator.

XOUT

External Crystal Output. This pin is the output of the crystal oscillator. A crystal

can be connected between it and the

XIN pin to form the oscillator. When the

system clock is referred to in this manual, it refers to the frequency of the signal at

this pin.

RCOUT

RC Oscillator Output. This signal is the output of the RC oscillator. It is

multiplexed with a general-purpose I/O pin.

On-Chip Debugger

DBG

I/O

Debug. This pin is the control and data input and output to and from the On-Chip

Debugger. For operation of the On-chip debugger, all power pins (VDD and AVDD

must be supplied with power, and all ground pins (VSS and AVSS must be

grounded. This pin is open-drain and must have an external pull-up resistor to

ensure proper operation.

Table 2. Signal Descriptions (Continued)

Signal Mnemonic

I/O

Description

Z8F3201 Datasheet(PDF) 32 Page - Zilog, Inc.

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