ATMEGA162V-8AJ Atmel, ATMEGA162V-8AJ Datasheet - Page 205

• Manufacturer Part Number: ATMEGA162V-8AJ
• Description: IC MCU AVR 16K 5V 8MHZ 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA162V-8AJ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• 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
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

Data Registers
Bypass Register
Device Identification
Register
Version
Part Number
Manufacturer ID
Reset Register
2513K–AVR–07/09
The data registers relevant for Boundary-scan operations are:
•
•
•
•
The Bypass Register consists of a single Shift Register stage. When the Bypass Register is
selected as path between TDI and TDO, the register is reset to 0 when leaving the Capture-DR
controller state. The Bypass Register can be used to shorten the scan chain on a system when
the other devices are to be tested.
Figure 85
Figure 85. The Format of the Device Identification Register
Version is a 4-bit number identifying the revision of the component. The JTAG version number
follows the revision of the device. Revision A is 0x0, revision B is 0x1 and so on.
The part number is a 16-bit code identifying the component. The JTAG Part Number for
ATmega162 is listed in
Table 83. AVR JTAG Part Number
The Manufacturer ID is a 11-bit code identifying the manufacturer. The JTAG manufacturer ID
for ATMEL is listed in
Table 84. Manufacturer ID
The Reset Register is a test data register used to reset the part. Since the AVR tri-states Port
Pins when reset, the Reset Register can also replace the function of the unimplemented optional
JTAG instruction HIGHZ.
A high value in the Reset Register corresponds to pulling the external Reset low. The part is
reset as long as there is a high value present in the Reset Register. Depending on the Fuse set-
tings for the clock options, the part will remain reset for a Reset Time-out Period (refer to
Sources” on page
latched, so the reset will take place immediately, as shown in
Bit
Device ID
Part number
ATmega162
Manufacturer
ATMEL
Bypass Register
Device Identification Register
Reset Register
Boundary-scan Chain
shows the structure of the Device Identification Register.
MSB
31
Version
4 bits
36) after releasing the Reset Register. The output from this data register is not
Table
28
Table
27
Part Number
16 bits
84.
83.
JTAG Part Number (Hex)
0x9404
JTAG Man. ID (Hex)
0x01F
12
11
Manufacturer ID
11 bits
Figure
1
86.
ATmega162/V
LSB
0
1
1 bit
“Clock
205