Z8F041APH020SG2156 ZiLOG, Z8F041APH020SG2156 Datasheet - Page 138

• Manufacturer Part Number: Z8F041APH020SG2156
• Description: 8-bit Microcontrollers - MCU 4K FLASH 1K RAM 128B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F041APH020SG2156

• Rohs: yes
• Core: eZ8
• Processor Series: Z8F041xx
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 4 KB
• Data Ram Size: 1 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: PDIP-20
• Mounting Style: Through Hole
• A/d Bit Size: 10 bit
• A/d Channels Available: 8
• Interface Type: UART
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 17
• Number Of Timers: 2
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

PS022827-1212
Baud Rate
IR_TXD
UART’s
Clock
TXD
Transmitting IrDA Data
7-clock
delay
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 (TXD) and baud rate clock are used by the IrDA to generate the
modulation signal (IR_TXD) that drives the infrared transceiver. Each UART/Infrared
data bit is 16 clocks wide. If the data to be transmitted is 1, the IR_TXD signal remains
low for the full 16 clock period. If the data to be transmitted is 0, the transmitter first out-
puts a 7 clock low period, followed by a 3 clock high pulse. Finally, a 6 clock low pulse is
output to complete the full 16 clock data period. Figure 17 displays IrDA data transmis-
sion. When the infrared endec is enabled, the UART’s TXD signal is internal to the Z8
Encore! XP F082A Series products while the IR_TXD signal is output through the TXD
pin.
Infrared Data Rate (bits/s)
Start Bit = 0
16 clock
period
3 clock
pulse
Figure 17. Infrared Data Transmission
Data Bit 0 = 1
P R E L I M I N A R Y
=
-------------------------------------------------------------------------------- -
16

System Clock Frequency (Hz)
Data Bit 1 = 0
UART Baud Rate Divisor Value
Data Bit 2 = 1
Z8 Encore! XP
Product Specification
Data Bit 3 = 1
®
F082A Series
Operation
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