ATmega64 Atmel Corporation, ATmega64 Datasheet - Page 269

• Manufacturer Part Number: ATmega64
• Manufacturer: Atmel Corporation

Specifications of ATmega64

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table 105. Algorithm for Using the ADC
Note:
2490Q–AVR–06/10
Ste
p
1
2
3
4
5
6
7
8
9
10
11
Actions
SAMPLE_PRELOAD
EXTEST
Verify the COMP bit scanned out to be 0
Verify the COMP bit scanned out to be 1
1. Using this algorithm, the timing constraint on the HOLD signal constrains the TCK clock frequency. As the algorithm keeps
HOLD high for five steps, the TCK clock frequency has to be at least five times the number of scan bits divided by the maxi-
mum hold time, t
hold,max
The recommended values from
rithm in
“Actions” describes what JTAG instruction to be used before filling the Boundary-scan Register
with the succeeding columns. The verification should be done on the data scanned out when
scanning in the data on the same row in the table.
.
Table
(1)
105. Only the DAC and Port Pin values of the Scan-chain are shown. The column
ADCEN
1
1
1
1
1
1
1
1
1
1
1
0x200
0x200
0x200
0x123
0x123
0x200
0x200
0x200
0x143
0x143
0x200
DAC
Table 104
MUXEN
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
are used unless other values are given in the algo-
HOLD
1
0
1
1
1
1
0
1
1
1
1
PRECH
1
1
1
1
0
1
1
1
1
0
1
PA3.
Data
ATmega64(L)
0
0
0
0
0
0
0
0
0
0
0
Control
PA3.
0
0
0
0
0
0
0
0
0
0
0
Enable
Pull-
PA3.
up_
0
0
0
0
0
0
0
0
0
0
0
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