ATMEGA103L-4AI Atmel, ATMEGA103L-4AI Datasheet

IC MCU 128K 4MHZ A/D LV 64TQFP

ATMEGA103L-4AI

Manufacturer Part Number
ATMEGA103L-4AI
Description
IC MCU 128K 4MHZ A/D LV 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar

Specifications of ATMEGA103L-4AI

Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
For Use With
ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Errata
12. Wake-up from Power Save Executes Instructions before Interrupt
11. The SPI can Send Wrong Byte
10. Wrong Clearing of EXTRF in MCUSR
9. Reset during EEPROM Write
Wake-up from Power Save Executes Instructions before Interrupt
SPI can Send Wrong Byte
Wrong Clearing of EXTRF in MCUSR
Reset during EEPROM Write
SPI Interrupt Flag can be Undefined after Reset
Serial Programming at Voltages below 3.4V
Skip Instruction with Interrupts
Signature Bytes
Read Back Value during EEPROM Polling
MISO Active during In-System Programming
The ADC has no Free-running Mode
UART Loses Synchronization if RXD Line is Low when UART Receive is Disabled
When waking up from power save, some instructions are executed before the
interrupt is called. If the device is woken up by an external interrupt, 2 instruction
cycles are executed. If it is woken up by the asynchronous timer, 3 instructions
are executed before the interrupt.
Problem Fix/Workaround
Make sure that the first two or three instructions following sleep are not dependent
on the executed interrupt.
If the SPI is in Master mode, it will restart the old transfer if new data is written on
the same clock edge as the previous transfer is finished.
Problem Fix/Workaround
When writing to the SPI, first wait until it is ready, then write the byte to transmit.
The EXTRF flag in MCUSR will be cleared when clearing the PORF-flag. The flag
does not get cleared by writing a “0” to it.
Problem Fix/Workaround
Finish the test of both flags before clearing any of them. Clear both flags simulta-
neously by writing “0” to both PORF and EXTRF in MCUCR.
If reset is activated during EEPROM write, the result is not what should be
expected. The EEPROM write cycle completes as normal, but the address regis-
ters are reset to 0. The result is that both the address written and address 0 in the
EEPROM can be corrupted.
Problem Fix/Workaround
Avoid using address 0 for storage, unless you can guarantee that you will not get
a reset during EEPROM write.
8-bit
Microcontroller
with 128K Bytes
In-System
Programmable
Flash
ATmega103L
Rev. F/G
Errata Sheet
Rev. 1197D–12/99
1

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ATMEGA103L-4AI Summary of contents

Page 1

... The result is that both the address written and address 0 in the EEPROM can be corrupted. Problem Fix/Workaround Avoid using address 0 for storage, unless you can guarantee that you will not get a reset during EEPROM write. 8-bit Microcontroller with 128K Bytes In-System Programmable Flash ATmega103L Rev. F/G Errata Sheet Rev. 1197D–12/99 1 ...

Page 2

... MISO Active during In-System Programming During In-System Programming, the MISO line (pin 13) of the ATmega103L is active, although the UART pins are used for programming. If pin 13 is used as an input in the application, a collision may occur on this line. Problem Fix/Workaround - If the MISO pin is used as an input, make sure that there is a current-limiting resistor in series with the line ...

Page 3

... ADCSR register must always be written as “0”. Problem Fix/Workaround Use Single-conversion Mode and always use the latest revision of the datasheet. ATmega103L 1. UART Loses Synchronization if RXD Line is Low when UART Receive is Disabled The UART will detect a UART start bit and start recep- tion even if the UART is not enabled ...

Page 4

... No licenses to patents or other intellectual prop- erty of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. ...

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