Z8F4822AR020SG Datasheet, PDF (35/323 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F64xx Series
Product Specification
15
Table 3. Signal Descriptions (Continued)
Signal
Mnemonic I/O
Description
SPI Controller (continued)
MOSI
MISO
I/O
Master-Out/Slave-In. This signal is the data output from the SPI master device
and the data input to the SPI slave device. It is multiplexed with a general-pur-
pose I/O pin.
I/O
Master-In/Slave-Out. This pin is the data input to the SPI master device and
the data output from the SPI slave device. It is multiplexed with a 
general-purpose I/O pin.
UART Controllers
TXD0/TXD1 O
RXD0/RXD1 I
CTS0/CTS1 I
DE0/DE1
O
Transmit Data. These signals are the transmit outputs from the UARTs. The
TxD signals are multiplexed with general-purpose I/O pins.
Receive Data. These signals are the receiver inputs for the UARTs and IrDAs.
The RxD signals are multiplexed with general-purpose I/O pins.
Clear To Send. These signals are control inputs for the UARTs. The CTS sig-
nals are multiplexed with general-purpose I/O pins.
Driver Enable. This signal allows automatic control of external RS-485 drivers.
This signal is approximately the inverse of the Transmit Empty (TXE) bit in the
UART Status 0 Register. The DE signal may be used to ensure an external
RS-485 driver is enabled when data is transmitted by the UART.
Timers
T0OUT/
O
T1OUT/
T2OUT/
T3OUT
T0IN/T1IN/ I
T2IN/T3IN
Timer Output 0-3. These signals are output pins from the timers. The timer
output signals are multiplexed with general-purpose I/O pins. T3OUT is not
available in 44-pin package devices.
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 available in 44-pin package devices.
Analog
ANA[11:0]
I
V_REF
I
Analog Input. These signals are inputs to the ADC. The ADC analog inputs are
multiplexed with general-purpose I/O pins.
Analog-to-Digital converter reference voltage input. The V_REF pin must be left
unconnected (or capacitively coupled to analog ground) if the internal voltage
reference is selected as the ADC reference voltage.
PS019924-0113
PRELIMINARY
Signal Descriptions