ATMEGA324PA-MUR Atmel, ATMEGA324PA-MUR Datasheet - Page 299

• Manufacturer Part Number: ATMEGA324PA-MUR
• Description: MCU AVR 32KB FLASH 20 MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA324PA-MUR

• 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: 32
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

26.2.1
26.3
26.4
26.5
Table 26-7.
Table 26-8.
8152G–AVR–11/09
ATmega164PA
ATmega324PA
ATmega644PA
ATmega1284P
ATmega164PA
ATmega324PA
ATmega644PA
ATmega1284P
Device
Device
Signature Bytes
Calibration Byte
Page Size
Latching of Fuses
No. of Words in a Page and No. of Pages in the Flash
No. of Words in a Page and No. of Pages in the EEPROM
8K words (16 Kbytes)
16K words (32 Kbytes)
32K words (64 Kbytes)
64K words (128 Kbytes)
EEPROM Size
Flash Size
The fuse values are latched when the device enters programming mode and changes of the
fuse values will have no effect until the part leaves Programming mode. This does not apply to
the EESAVE Fuse which will take effect once it is programmed. The fuses are also latched on
Power-up in Normal mode.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and parallel mode, also when the device is locked. The three
bytes reside in a separate address space. For the ATmega164PA/324PA/644PA/1284P the sig-
nature bytes are given in
Table 26-6.
The ATmega164PA/324PA/644PA/1284P has a byte calibration value for the internal RC Oscil-
lator. This byte resides in the high byte of address 0x000 in the signature address space. During
reset, this byte is automatically written into the OSCCAL Register to ensure correct frequency of
the calibrated RC Oscillator.
512 bytes
1 Kbytes
2 Kbytes
4 Kbytes
Part
ATmega164PA
ATmega324PA
ATmega644PA
ATmega1284P
Device and JTAG ID
Page Size
128 words
128 words
Page Size
64 words
64 words
0x000
4 bytes
4 bytes
8 bytes
8 bytes
0x1E
0x1E
0x1E
0x1E
Signature Bytes Address
Table
ATmega164PA/324PA/644PA/1284P
26-6.
0x001
0x94
0x95
0x96
0x97
PCWORD
PCWORD
EEA[1:0]
EEA[1:0]
EEA[2:0]
EEA[2:0]
PC[5:0]
PC[5:0]
PC[6:0]
PC[6:0]
0x002
0x0A
0x11
0x0A
0x05
No. of Pages
No. of Pages
128
256
256
512
128
256
256
512
Part Number
940A
960A
9511
9705
EEA[10:2]
EEA[11:3]
PCPAGE
PC[12:6]
PCPAGE
PC[13:6]
PC[14:6]
PC[15:7]
EEA[8:2]
EEA[9:2]
JTAG
Manufacture ID
0x1F
0x1F
0x1F
0x1F
EEAMSB
PCMSB
12
13
14
15
11
10
8
9
299