ATmega162 Atmel Corporation, ATmega162 Datasheet - Page 207

• Manufacturer Part Number: ATmega162
• Manufacturer: Atmel Corporation

Specifications of ATmega162

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 35
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• 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: 4
• Output Compare Channels: 6
• Input Capture Channels: 2
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

IDCODE; 0x1
SAMPLE_PRELOAD;
0x2
AVR_RESET; 0xC
BYPASS; 0xF
Boundary-scan
Related Register in I/O
Memory
MCU Control and
Status Register –
MCUCSR
2513K–AVR–07/09
Optional JTAG instruction selecting the 32-bit ID-register as data register. The ID-Register con-
sists of a version number, a device number and the manufacturer code chosen by JEDEC. This
is the default instruction after Power-up.
The active states are:
•
•
Mandatory JTAG instruction for preloading the output latches and taking a snapshot of the
input/output pins without affecting the system operation. However, the output latches are not
connected to the pins. The Boundary-scan Chain is selected as Data Register.
The active states are:
•
•
•
The AVR specific public JTAG instruction for forcing the AVR device into the Reset mode or
releasing the JTAG Reset source. The TAP controller is not reset by this instruction. The one bit
Reset Register is selected as data register. Note that the reset will be active as long as there is
a logic 'one' in the Reset Chain. The output from this chain is not latched.
The active states are:
•
Mandatory JTAG instruction selecting the Bypass Register for data register.
The active states are:
•
•
The MCU Control and Status Register contains control bits for general MCU functions, and pro-
vides information on which reset source caused an MCU Reset.
• Bit 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.
If the JTAG interface is left unconnected to other JTAG circuitry, the JTD bit should be set to
one. The reason for this is to avoid static current at the TDO pin in the JTAG interface.
Bit
Read/Write
Initial Value
Capture-DR: Data in the IDCODE Register is sampled into the Boundary-scan Chain.
Shift-DR: The IDCODE scan chain is shifted by the TCK input.
Capture-DR: Data on the external pins are sampled into the Boundary-scan Chain.
Shift-DR: The Boundary-scan Chain is shifted by the TCK input.
Update-DR: Data from the Boundary-scan chain is applied to the output latches. However,
the output latches are not connected to the pins.
Shift-DR: The Reset Register is shifted by the TCK input.
Capture-DR: Loads a logic “0” into the Bypass Register.
Shift-DR: The Bypass Register cell between TDI and TDO is shifted.
JTD
R/W
7
0
R/W
6
–
0
SM2
R
5
0
JTRF
R/W
4
WDRF
R/W
3
See Bit Description
BORF
R/W
2
EXTRF
R/W
1
ATmega162/V
PORF
R/W
0
MCUCSR
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