ATMEGA329P-20MU Atmel, ATMEGA329P-20MU Datasheet - Page 197
![IC MCU 32K 4X25 LCD CTRL 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA329P-20MU
Manufacturer Part Number
ATMEGA329P-20MU
Description
IC MCU 32K 4X25 LCD CTRL 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA329P-20MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K 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
64-MLF®, 64-QFN
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
SPI, USART, USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
54
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA329P-16MU
ATMEGA329P-16MU
ATMEGA329P-16MU
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Table 2. Examples of UBRRn Settings for Commonly Used Oscillator Frequencies (Continued)
Note:
8021G–AVR–03/11
Baud
Rate
(bps)
115.2k
230.4k
Max.
14.4k
19.2k
28.8k
38.4k
57.6k
76.8k
2400
4800
9600
0.5M
250k
1M
(1)
1. UBRR = 0, Error = 0.0%
UBRRn
416
207
103
68
51
34
25
16
12
8
3
3
1
0
U2Xn = 0
1Mbps
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%
= 16.0000MHz
UBRRn
832
416
207
138
103
68
51
34
25
16
8
7
3
1
U2Xn = 1
2Mbps
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
79
59
39
29
19
14
1.152Mbps
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%
= 18.4320MHz
–
–
UBRRn
959
479
239
159
119
79
59
39
29
19
2.304Mbps
4
9
8
–
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%
–
ATmega329P/3290P
UBRRn
520
259
129
86
64
42
32
21
15
10
4
4
–
–
1.25Mbps
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%
= 20.0000MHz
–
–
UBRRn
1041
520
259
173
129
86
64
42
32
21
10
9
4
–
U2Xn = 1
2.5Mbps
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%
–
197
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