ATMEGA164A-CU Atmel, ATMEGA164A-CU Datasheet - Page 296
![IC MCU AVR 16K 20MHZ 49VFBGA](/photos/12/32/123215/49c2-vfbga_sml.jpg)
ATMEGA164A-CU
Manufacturer Part Number
ATMEGA164A-CU
Description
IC MCU AVR 16K 20MHZ 49VFBGA
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA164A-CU
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
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
49-VFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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26.2
8272A–AVR–01/10
Fuse Bits
Table 26-2.
Notes:
The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P has four Fuse bytes.
26-3
the Fuse bytes. Note that the fuses are read as logical zero, “0”, if they are programmed.
Table 26-3.
Note:
164A/164PA/324A/324PA/644A/644PA/1284/1284P
–
–
–
–
–
BODLEVEL2
BODLEVEL1
BODLEVEL0
BLB1 Mode
Fuse Low Byte
-
Table 26-5
1
2
3
4
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
1. See
Memory Lock Bits
(1)
(1)
(1)
Lock Bit Protection Modes
Extended Fuse Byte
”System and Reset Characteristics” on page 335
BLB12
describe briefly the functionality of all the fuses and how they are mapped into
1
1
0
0
7
6
5
4
3
2
1
0
Bit No
BLB11
1
0
0
1
Description
–
–
–
–
–
Brown-out Detector trigger level
Brown-out Detector trigger level
Brown-out Detector trigger level
Protection Type
No restrictions for SPM or (E)LPM accessing the Boot Loader
section.
SPM is not allowed to write to the Boot Loader section.
SPM is not allowed to write to the Boot Loader section, and
(E)LPM executing from the Application section is not allowed to
read from the Boot Loader section. If Interrupt Vectors are
placed in the Application section, interrupts are disabled while
executing from the Boot Loader section.
(E)LPM executing from the Application section is not allowed to
read from the Boot Loader section. If Interrupt Vectors are
placed in the Application section, interrupts are disabled while
executing from the Boot Loader section.
(1)(2)
(Continued)
for BODLEVEL Fuse decoding.
Default Value
1
1
1
1
1
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Table
296
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