ATtiny167 Atmel Corporation, ATtiny167 Datasheet - Page 283
ATtiny167
Manufacturer Part Number
ATtiny167
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny167
Flash (kbytes)
16 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
16
Ext Interrupts
16
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Lin
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
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
2
Output Compare Channels
3
Input Capture Channels
1
Pwm Channels
9
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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8265B–AVR–09/10
3. ‘Disable Clock Source’ command remains enabled.
; (*) !!! Loose gain control of crystal oscillator !!!
; ==> WORKAROUND ...
; ...
In the Dynamic Clock Switch module, the ‘Disable Clock Source’ command remains run-
ning after disabling the targeted clock source (the clock source is set in the CLKSELR
register).
Problem fix / workaround.
After a ‘Disable Clock Source’ command, reset the CLKCSR register writing 0x80.
Code example:
; (*) !!! At this moment, if any other clock source is selected by
CLKSELR,
;
; ==> WORKAROUND ...
; Select watchdog clock ( 128KHz, fast rising power)
; Select crystal oscillator
; Disable clock source (crystal oscillator)
sts
ldi
sts
sts
ldi
sts
ldi
ldi
sts
sts
sts
this clock source will also stop !!!
CLKCSR,temp3
temp3,((0x03<<CSEL0)|(0x02<<CSUT0))
CLKSELR, temp3
CLKSELR, temp1
temp1,(0x0F<<CSEL0)
CLKSELR, temp1
temp2,(1<<CLKCCE)
temp3,(0x01<<CLKC0)
CLKCSR,temp2
CLKCSR,temp3
CLKCSR,temp2
; Clock source switch
; (*)
; CSEL = "0001"
; Enable CLKCSR register access
; (*) Disable crystal oscillator clock
283
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