AT90S8515A-4JC Atmel, AT90S8515A-4JC Datasheet - Page 52
![IC MCU 8K FLSH 4MHZ LV 44PLCC](/photos/6/70/67043/453-44-plcc_sml.jpg)
AT90S8515A-4JC
Manufacturer Part Number
AT90S8515A-4JC
Description
IC MCU 8K FLSH 4MHZ LV 44PLCC
Manufacturer
Atmel
Series
AVR® 90Sr
Datasheets
1.AT90S8515-4AC.pdf
(112 pages)
2.AT90S8515-4AC.pdf
(4 pages)
3.AT90S8515-4AC.pdf
(4 pages)
Specifications of AT90S8515A-4JC
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
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UART
Data Transmission
52
AT90S8515
The AT90S8515 features a full duplex (separate receive and transmit registers) Univer-
sal Asynchronous Receiver and Transmitter (UART). The main features are:
•
•
•
•
•
•
•
•
A block schematic of the UART transmitter is shown in Figure 38.
Figure 38. UART Transmitter
Data transmission is initiated by writing the data to be transmitted to the UART I/O Data
Register, UDR. Data is transferred from UDR to the Transmit shift register when:
•
•
Baud Rate Generator that can Generate a large Number of Baud Rates (bps)
High Baud Rates at Low XTAL Frequencies
8 or 9 Bits Data
Noise Filtering
Overrun Detection
Framing Error Detection
False Start Bit Detection
Three separate Interrupts on TX Complete, TX Data Register Empty and RX Complete
A new character has been written to UDR after the stop bit from the previous
character has been shifted out. The shift register is loaded immediately.
A new character has been written to UDR before the stop bit from the previous
character has been shifted out. The shift register is loaded when the stop bit of the
character currently being transmitted has been shifted out.
0841G–09/01
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