EZ80F93AZ020SG Zilog, EZ80F93AZ020SG Datasheet - Page 112
![IC ACCLAIM MCU 64KB 100LQFP](/photos/6/76/67664/269-100-lqfp_sml.jpg)
EZ80F93AZ020SG
Manufacturer Part Number
EZ80F93AZ020SG
Description
IC ACCLAIM MCU 64KB 100LQFP
Manufacturer
Zilog
Series
eZ80® Acclaim!®r
Specifications of EZ80F93AZ020SG
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
24
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
100-LQFP
Processor Series
EZ80F93x
Core
eZ80
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
I2C, IrDA, SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
24
Number Of Timers
6
Operating Supply Voltage
3 V to 3.6 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Development Tools By Supplier
eZ80F920200ZCOG
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Other names
269-3874
EZ80F93AZ020SG
EZ80F93AZ020SG
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UART Functional Description
PS015313-0508
UART Functions
The UART function implements:
•
•
•
The UART function implements:
•
•
•
UART Transmitter
The transmitter block controls the data transmitted on the TxD output. It implements the
FIFO, accessed through the UARTx_THR register, the transmit shift register, the parity
generator, and control logic for the transmitter to control parameters for the asynchronous
communication protocol.
The UARTx_THR is a Write Only register. The processor writes the data byte to be trans-
mitted into this register. In the FIFO mode, up to 16 data bytes can be written via the
UARTx_THR register. The data byte from the FIFO is transferred to the transmit shift reg-
ister at the appropriate time and transmitted out on TxD output. After SYNC_RESET, the
UARTx_THR register is empty. Therefore, the Transmit Holding Register Empty (THRE)
bit (bit 5 of the UARTx_LSR register) is 1 and an interrupt is sent to the processor (if
interrupts are enabled). The processor can reset this interrupt by loading data into the
UARTx_THR register, which clears the transmitter interrupt.
The transmit shift register places the byte to be transmitted on the TxD signal serially. The
lsb of the byte to be transmitted is shifted out first and the msb is shifted out last. The con-
trol logic within the block adds the asynchronous communication protocol bits to the data
byte being transmitted. The transmitter block obtains the parameters for the protocol from
the bits programmed via the UARTx_LCTL register. When enabled, an interrupt is gener-
ated after the most recent protocol bit is transmitted, which the processor may reset by
loading data into the UARTx_THR register. The TxD output is set to 1 if the transmitter is
idle (it does not contain any data to be transmitted).
The transmitter operates with the Baud Rate Generator (BRG) clock. The data bits are
placed on the TxD output one time every 16 BRG clock cycles. The transmitter block also
implements a parity generator that attaches the parity bit to the byte, if programmed. For
The transmitter and associated control logic
The receiver and associated control logic
The modem interface and associated logic
The transmitter and associated control logic
The receiver and associated control logic
The modem interface and associated logic
Universal Asynchronous Receiver/Transmitter
Product Specification
eZ80F92/eZ80F93
105
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