Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 192

• Manufacturer Part Number: Z8F16800144ZCOG
• Description: KIT DEV FOR Z8F642 MCU 44 PIN
• Manufacturer: Zilog
• Series: Z8 Encore!®r
• Type: MCUr

Specifications of Z8F16800144ZCOG

• Contents: Hardware, Software and Documentation
• For Use With/related Products: Z8F642
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4678

PS025011-1010
Baud Rate
IR_TXD
UART’s
Clock
TXD
Transmitting IrDA Data
7-clock
delay
transceiver is passed to the Infrared Endec through the RXD pin, decoded by the Infrared
Endec and passed to the UART. Communication is half-duplex, that is, simultaneous data
transmission and reception is not allowed.
The baud rate is set by the UART’s Baud Rate Generator and supports IrDA standard baud
rates from 9600 baud to 115.2 Kbaud. Higher baud rates are possible, but do not meet
IrDA specifications. The UART must be enabled to use the Infrared Endec. The Infrared
Endec data rate is calculated using the following equation:
The data to be transmitted using the infrared transceiver is first sent to the UART. The
UART’s transmit signal (
modulation signal (
bit is 16 clocks wide. If the data to be transmitted is 1, the
the full 16-clock period. If the data to be transmitted is 0, the transmitter first outputs a 7-
clock low period, followed by a 3-clock high pulse. Finally, a 6-clock low pulse is the
output to complete the full 16 clock data period.
transmission. When the Infrared Endec is enabled, the UART’s
the Z8 Encore! XP F1680 Series products while the
the TXD pin.
Start Bit = 0
16-clock
period
3-clock
Infrared Data Rate bits s 
pulse
Figure 28. Infrared Data Transmission
Data Bit 0 = 1
IR_TXD

TXD
) that drives the infrared transceiver. Each UART/Infrared data
P R E L I M I N A R Y
) and baud rate clock are used by the IrDA to generate the

=
----------------------------------------------------------------------------------------------------- -
16 UART Baud Rate Divisor Value
Data Bit 1 = 0

System Clock Frequency Hz
Figure 28
IR_TXD
Data Bit 2 = 1
Z8 Encore! XP
IR_TXD
displays IrDA data
signal is the output through

TXD
Product Specification

signal remains low for
Infrared Encoder/Decoder
signal is internal to
Data Bit 3 = 1
®
F1680 Series
178