ATMEGA103L-4AI Atmel, ATMEGA103L-4AI Datasheet

ATMEGA103L-4AI

Manufacturer Part Number

ATMEGA103L-4AI

Description

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

Manufacturer

Atmel

Series

AVR® ATmegar

Datasheets

1.ATMEGA103-6AC.pdf (141 pages)

2.ATMEGA103-6AC.pdf (4 pages)

3.ATMEGA103L-4AC.pdf (4 pages)

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

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

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Errata

•

13. Power Consumption when Using Slowly Rising Power Supply

12. Releasing Reset Condition without Clock

11. Wake-up from Power-save Executes Instructions before Interrupt

10. The SPI Can Send Wrong Byte

Power Consumption when Using Slowly Rising Power Supply

Releasing Reset Condition without Clock

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

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

If the power supply rises slowly upon start-up (slower than 10 ms rise time), the

power consumption in sleep modes may exceed the specification.

Problem Fix/Workaround

The device behaves functionally correct, and no actions need to be taken if power

consumption is acceptable. To reduce power consumption, make sure the power

supply has a sufficiently fast rise time.

If an external reset or a watchdog reset occurs while the clock is stopped and the

reset is released before the clock is restarted, the internal reset will time-out after

the start-up delay which is independent of the external clock. If no external clock

pulses are present in the period when internal reset is active, the reset does cor-

rectly cause tri-stating of the I/O while the reset is held. However, if the internal

reset is released before the clock starts running, the part does not clear I/O regis-

ters, nor set PC to 0x00. Here, stopping the clock refers to gating the external

clock input. Power-down and Power-save mode do not have this issue.

Problem Fix/Workaround

Make sure the clock is running whenever an external reset can be expected. If the

watchdog is used, never stop an external clock.

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, two instruc-

tion cycles are executed. If it is woken up by the asynchronous timer, three

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.

8-bit

Microcontroller

with 128K Bytes

In-System

Programmable

Flash

ATmega103(L)

Rev. L

Errata Sheet

Rev. 1436C–09/01

Related parts for ATMEGA103L-4AI

ATMEGA103L-4AI Summary of contents

Page 1

Errata • Power Consumption when Using Slowly Rising Power Supply • Releasing Reset Condition without Clock • Wake-up from Power-save Executes Instructions before Interrupt • SPI Can Send Wrong Byte • Wrong Clearing of EXTRF in MCUSR • Reset during ...

Page 2

Wrong Clearing of EXTRF in MCUSR 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 ...

Page 3

Read Back Value during EEPROM Polling When a new EEPROM byte is being programmed into the EEPROM with In-System Programming, reading the address location being programmed will give the value P1 (see table below) until the Auto-erase is finished. ...

Page 4

... No licenses to patents or other intellectual property 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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