ATmega48P Atmel Corporation, ATmega48P Datasheet - Page 201
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ATmega48P
Manufacturer Part Number
ATmega48P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega48P
Flash (kbytes)
4 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
256
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega48P-10MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega48P-20AU
Manufacturer:
TI
Quantity:
101
Company:
Part Number:
ATmega48P-20MU
Manufacturer:
ATMEL
Quantity:
2 356
Company:
Part Number:
ATmega48P-20PU
Manufacturer:
ON
Quantity:
12 400
Part Number:
ATmega48P-20PU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega48PA-15MT
Manufacturer:
ATMEL
Quantity:
110
Company:
Part Number:
ATmega48PA-15MZ
Manufacturer:
ATMEL
Quantity:
3 500
Part Number:
ATmega48PA-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Table 20-12. Examples of UBRRn Settings for Commonly Used Oscillator Frequencies (Continued)
1.
8025M–AVR–6/11
Baud
Rate
(bps)
2400
4800
9600
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
115.2k
230.4k
250k
0.5M
1M
Max.
(1)
UBRRn = 0, Error = 0.0%
UBRRn
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2Xn = 0
1 Mbps
f
osc
Error
-0.1%
-0.8%
-3.5%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.2%
8.5%
0.0%
0.0%
0.0%
= 16.0000 MHz
UBRRn
832
416
207
138
103
68
51
34
25
16
8
7
3
1
U2Xn = 1
2 Mbps
Error
-0.1%
-0.1%
-0.8%
-3.5%
0.0%
0.2%
0.2%
0.6%
0.2%
0.2%
2.1%
0.0%
0.0%
0.0%
UBRRn
479
239
119
1.152 Mbps
79
59
39
29
19
14
9
4
4
–
–
U2Xn = 0
f
osc
Error
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
= 18.4320 MHz
–
–
UBRRn
959
479
239
159
119
2.304 Mbps
79
59
39
29
19
9
8
4
–
U2Xn = 1
Error
-7.8%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
2.4%
–
ATmega48P/88P/168P
UBRRn
520
259
129
86
64
42
32
21
15
10
1.25 Mbps
4
4
–
–
U2Xn = 0
f
osc
Error
-0.2%
-1.4%
-1.4%
-1.4%
0.0%
0.2%
0.2%
0.2%
0.9%
1.7%
8.5%
0.0%
= 20.0000 MHz
–
–
UBRRn
1041
520
259
173
129
86
64
42
32
21
10
9
4
–
U2Xn = 1
2.5 Mbps
Error
-0.2%
-0.2%
-1.4%
-1.4%
-1.4%
0.0%
0.0%
0.2%
0.2%
0.2%
0.9%
0.0%
0.0%
–
201