Z8F082ASJ020EG Datasheet, PDF (27/282 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
10
Signal Descriptions
Table 2 describes the Z8 Encore! XP F082A Series signals. See the Pin Configurations
section on page 8 to determine the signals available for the specific package styles.
Table 2. Signal Descriptions
Signal Mnemonic I/O Description
General-Purpose I/O Ports A–D
PA[7:0]
I/O Port A. These pins are used for general-purpose I/O.
PB[7:0]
I/O Port B. These pins are used for general-purpose I/O. PB6 and PB7 are
available only in those devices without an ADC.
PC[7:0]
I/O Port C. These pins are used for general-purpose I/O.
PD[0]
I/O Port D. This pin is used for general-purpose output only.
UART Controllers
TXD0
O Transmit Data. This signal is the transmit output from the UART and IrDA.
RXD0
I Receive Data. This signal is the receive input for the UART and IrDA.
CTS0
I Clear To Send. This signal is the flow control input for the UART.
DE
O Driver Enable. This signal allows automatic control of external RS-485
drivers. This signal is approximately the inverse of the TXE (Transmit
Empty) bit in the UART Status 0 Register. The DE signal may be used to
ensure the external RS-485 driver is enabled when data is transmitted by
the UART.
Timers
T0OUT/T1OUT
O Timer Output 0–1. These signals are outputs from the timers.
T0OUT/T1OUT
T0IN/T1IN
O Timer Complement Output 0–1. These signals are output from the timers
in PWM Dual Output mode.
I Timer Input 0–1. These signals are used as the capture, gating and coun-
ter inputs.
Comparator
CINP/CINN
I Comparator Inputs. These signals are the positive and negative inputs to
the comparator.
COUT
O Comparator Output.
Notes:
1. PB6 and PB7 are only available in 28-pin packages without ADC. In 28-pin packages with ADC, they are
replaced by AV_DD and AV_SS.
2. The AV_DD and AV_SS signals are available only in 28-pin packages with ADC. They are replaced by PB6 and PB7
on 28-pin packages without ADC.
PS022827-1212
PRELIMINARY
Signal Descriptions