ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 83

• Manufacturer Part Number: ATxmega128B1
• Manufacturer: Atmel Corporation

Specifications of ATxmega128B1

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 53
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Segment Lcd: 160
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 8
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 10
• Input Capture Channels: 10
• Pwm Channels: 10
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

36.14.6
Table 36-25. External Clock used as System Clock without prescaling
Note:
8330B–AVR–10/11
Symbol
1/t
Δt
t
t
t
t
t
CH
CR
CK
CL
CF
CK
CK
1. The maximum frequency vs. supply voltage is linear between 1.8V and 2.7V, and the same applies for all other parameters
External Clock Characteristics
with supply voltage conditions.
Parameter
Clock Frequency
Clock Period
Clock High Time
Clock Low Time
Rise Time (for maximum frequency)
Fall Time (for maximum frequency)
Change in period from one clock cycle to the next
Figure 36-3. External Clock Drive Waveform
(1)
V
IL1
V
IH1
t
CH
Condition
V
V
V
V
V
V
V
V
V
V
V
V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
= 1.6 - 1.8V
= 2.7 - 3.6V
= 1.6 - 1.8V
= 2.7 - 3.6V
= 1.6 - 1.8V
= 2.7 - 3.6V
= 1.6 - 1.8V
= 2.7 - 3.6V
= 1.6 - 1.8V
= 2.7 - 3.6V
= 1.6 - 1.8V
= 2.7 - 3.6V
t
CL
t
CR
t
83.3
31.5
30.0
12.5
30.0
12.5
Min
CK
0
0
Typ
t
CH
XMEGA B1
Max
12
32
10
10
10
3
3
Units
MHz
ns
%
t
83
CF