Z8FS040 Datasheet, PDF (11/56 Pages) Zilog, Inc. – ZMOTION Detection and Control Family Featuring Zilog’s PIR Technology

ZMOTION^TM Detection and Control Family
Product Specification
Signal Descriptions
Table 3 below describes the Z8FS040 Series signals.
Table 3 - 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[5:0]
PC[7:0]
I/O These pins are used for general-purpose I/O.
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
T0OUT/T1OUT
T0IN/T1IN
O Timer Output 0–1. These signals are outputs from the timers.
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
counter inputs.
PS028506-1110
PRELIMINARY
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