ATMEGA48-20AI Atmel, ATMEGA48-20AI Datasheet - Page 367

• Manufacturer Part Number: ATMEGA48-20AI
• Description: IC AVR MCU 4K 5V 20MHZ 32-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48-20AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATMEGA48-24AI; ATMEGA48-24AI

35.17 Rev. 2545C-04/04
35.18 Rev. 2545B-01/04
2545S–AVR–07/10
1.
2.
3.
4.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Added section
Updated C code examples containing old IAR syntax.
Speed Grades changed: 12 MHz to 10 MHz and 24 MHz to 20 MHz
Updated
Updated
Updated
Added PDIP to “I/O and Packages”, updated “Speed Grade” and Power Consumption
Estimates in
Updated
value.
of the PRR bits to 2-wire, Timer/Counters, USART, Analog Comparator and ADC
sections.
Updated
Updated
Extra Compare Match Interrupt OCF2B added to features in section
Timer/Counter2 with PWM and Asynchronous Operation” on page 139
Updated
page 285 to 287 and
284. Fixed typo in
Updated whole
Added item 2 to 5 in
Renamed the following bits:
- SPMEN to SELFPRGEN
- PSR2 to PSRASY
- PSR10 to PSRSYNC
- Watchdog Reset to Watchdog System Reset
Updated BLBSET description in
Status Register” on page
“Speed Grades” on page
“Ordering Information” on page
“Errata ATmega88” on page
“Watchdog Timer” on page
Figure 15-2 on page 129
Table 9-1 on page
“Stack Pointer” on page 12
35.“Features” on page
“Power Reduction Register” on page 40
“Typical Characteristics” on page
Table 12-1 on page
“Errata ATmega48” on page
Table 23-1 on page
282.
38,
Table 23-5 on page
“SPMCSR – Store Program Memory Control and
and
304.
1.
48.
with RAMEND as recommended Stack Pointer
359.
66.
Table 15-3 on page
349.
248. Added note 2 to
314.
356.
258,
ATmega48/88/168
and a note regarding the use
Table 27-4
130.
Table 27-1 on page
to
Table 27-7
“8-bit
367
on