ATtiny167 Automotive Atmel Corporation, ATtiny167 Automotive Datasheet - Page 51

• Manufacturer Part Number: ATtiny167 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny167 Automotive

• 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 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 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

6.1.4
6.1.5
7728G–AVR–06/10
External Reset
Brown-out Detection
Figure 6-3.
An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the
minimum pulse width (see
not running. Shorter pulses are not guaranteed to generate a reset. When the applied signal
reaches the Reset Threshold Voltage – V
the MCU after the Time-out period – t
by the RSTDISBL fuse, see
Figure 6-4.
ATtiny87/167 has an On-chip Brown-out Detection (BOD) circuit for monitoring the Vcc level
during operation by comparing it to a fixed trigger level. The trigger level for the BOD can be
selected by the BODLEVEL Fuses
level has a hysteresis to ensure spike free Brown-out Detection. The hysteresis on the detec-
tion level should be interpreted as V
When the BOD is enabled, and Vcc decreases to a value below the trigger level (V
ure
level (V
has expired.
The BOD circuit will only detect a drop in Vcc if the voltage stays below the trigger level for lon-
ger than t
6-5), the Brown-out Reset is immediately activated. When Vcc increases above the trigger
INTERNAL
TIME-OUT
RESET
RESET
BOT
V
CC
BOD
CC
+
in
given in
MCU Start-up, RESET Extended Externally
External Reset During Operation
Figure
Table 22-6 on page
6-5), the delay counter starts the MCU after the Time-out period t
V
CCRR
Table 22-3 on page
Table 21-4 on page
V
POR
(See ”BODLEVEL Fuse Coding” on page
BOT
TOUT
+
= V
RST
247.
– has expired. The External Reset can be disabled
BOT
– on its positive edge, the delay counter starts
246) will generate a reset, even if the clock is
+ V
226.
HYST
V
RST
ATtiny87/ATtiny167
/ 2 and V
t
TOUT
BOT
–
= V
BOT
247.). The trigger
- V
HYST
BOT
/ 2.
–
in
TOUT
Fig-
51