ATMEGA164PA-CU Atmel, ATMEGA164PA-CU Datasheet - Page 276
ATMEGA164PA-CU
Manufacturer Part Number
ATMEGA164PA-CU
Description
MCU AVR 16KB FLASH 20MHZ 44VFBGA
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA164PA-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
Processor Series
ATMEGA16x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
2-Wire, JTAG, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
32
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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24.8
24.8.1
24.8.2
8272A–AVR–01/10
Register Description
MCUCR – MCU Control Register
MCUSR – MCU Status Register
The MCU Control Register contains control bits for general MCU functions.
Note:
• Bits 7 – JTD: JTAG Interface Disable
When this bit is zero, the JTAG interface is enabled if the JTAGEN Fuse is programmed. If this
bit is one, the JTAG interface is disabled. In order to avoid unintentional disabling or enabling of
the JTAG interface, a timed sequence must be followed when changing this bit: The application
software must write this bit to the desired value twice within four cycles to change its value. Note
that this bit must not be altered when using the On-chip Debug system.
The MCU Status Register provides information on which reset source caused an MCU reset.
• Bit 4 – JTRF: JTAG Reset Flag
This bit is set if a reset is being caused by a logic one in the JTAG Reset Register selected by
the JTAG instruction AVR_RESET. This bit is reset by a Power-on Reset, or by writing a logic
zero to the flag.
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Bit
0x35 (0x55)
Read/Write
Initial Value
Bit
0x34 (0x54)
Read/Write
Initial Value
1. Only available in the ATmega164PA/324PA/644PA/1284P.
JTD
R/W
7
0
R
7
–
0
BODS
R
6
0
R
6
–
0
(1)
BODSE
R
5
0
R
5
–
0
(1)
PUD
JTRF
R/W
R/W
4
0
4
WDRF
R/W
R
3
–
0
3
See Bit Description
BORF
R/W
R
2
–
0
2
IVSEL
EXTRF
R/W
R/W
1
0
1
IVCE
PORF
R/W
R/W
0
0
0
MCUCR
MCUSR
276
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