IC AVR MCU 4K 10MHZ 1.8V 32-QFN

ATMEGA48V-10MU

Manufacturer Part NumberATMEGA48V-10MU
DescriptionIC AVR MCU 4K 10MHZ 1.8V 32-QFN
ManufacturerAtmel
SeriesAVR® ATmega
ATMEGA48V-10MU datasheets
 

Specifications of ATMEGA48V-10MU

Core ProcessorAVRCore Size8-Bit
Speed10MHzConnectivityI²C, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, POR, PWM, WDTNumber Of I /o23
Program Memory Size4KB (2K x 16)Program Memory TypeFLASH
Eeprom Size256 x 8Ram Size512 x 8
Voltage - Supply (vcc/vdd)1.8 V ~ 5.5 VData ConvertersA/D 8x10b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFNPackage32MLF EP
Device CoreAVRFamily NameATmega
Maximum Speed10 MHzOperating Supply Voltage2.5|3.3|5 V
Data Bus Width8 BitNumber Of Programmable I/os23
Interface TypeSPI/TWI/USARTOn-chip Adc8-chx10-bit
Number Of Timers3Processor SeriesATMEGA48x
CoreAVR8Data Ram Size512 B
Maximum Clock Frequency10 MHzMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMT3rd Party Development ToolsEWAVR, EWAVR-BL
Minimum Operating Temperature- 40 CController Family/seriesAVR MEGA
No. Of I/o's23Eeprom Memory Size256Byte
Ram Memory Size512ByteCpu Speed10MHz
No. Of Timers3Rohs CompliantYes
For Use WithATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMLead Free Status / RoHS StatusLead free / RoHS Compliant
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Page 44/378

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10. System Control and Reset
10.1
Resetting the AVR
During reset, all I/O Registers are set to their initial values, and the program starts execution
from the Reset Vector. For the ATmega168, the instruction placed at the Reset Vector must be a
JMP – Absolute Jump – instruction to the reset handling routine. For the ATmega48 and
ATmega88, the instruction placed at the Reset Vector must be an RJMP – Relative Jump –
instruction to the reset handling routine. If the program never enables an interrupt source, the
Interrupt Vectors are not used, and regular program code can be placed at these locations. This
is also the case if the Reset Vector is in the Application section while the Interrupt Vectors are in
the Boot section or vice versa (ATmega88/168 only). The circuit diagram in
the reset logic.
The I/O ports of the AVR are immediately reset to their initial state when a reset source goes
active. This does not require any clock source to be running.
After all reset sources have gone inactive, a delay counter is invoked, stretching the internal
reset. This allows the power to reach a stable level before normal operation starts. The time-out
period of the delay counter is defined by the user through the SUT and CKSEL Fuses. The dif-
ferent selections for the delay period are presented in
10.2
Reset Sources
The ATmega48/88/168 has four sources of reset:
• Power-on Reset. The MCU is reset when the supply voltage is below the Power-on Reset
threshold (V
• External Reset. The MCU is reset when a low level is present on the RESET pin for longer than
the minimum pulse length.
• Watchdog System Reset. The MCU is reset when the Watchdog Timer period expires and the
Watchdog System Reset mode is enabled.
• Brown-out Reset. The MCU is reset when the supply voltage V
threshold (V
ATmega48/88/168
44
Table 28-3
defines the electrical parameters of the reset circuitry.
).
POT
) and the Brown-out Detector is enabled.
BOT
Figure 10-1
“Clock Sources” on page
27.
is below the Brown-out Reset
CC
2545S–AVR–07/10
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