ATTINY167-15XZ Atmel, ATTINY167-15XZ Datasheet - Page 52

• Manufacturer Part Number: ATTINY167-15XZ
• Description: MCU AVR 16K FLASH 15MHZ 20-TSSOP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY167-15XZ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-TSSOP
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.1.6
6.1.7
52
ATtiny87/ATtiny167
Watchdog System Reset
MCU Status Register – MCUSR
Figure 6-5.
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration.
On the falling edge of this pulse, the delay timer starts counting the Time-out period t
Refer to
Figure 6-6.
The MCU Status Register provides information on which reset source caused an MCU reset.
• Bit 7..4 – Res: Reserved Bits
These bits are unused bits in the ATtiny87/167, and will always read as zero.
• Bit 3 – WDRF: Watchdog System Reset Flag
This bit is set if a Watchdog System Reset occurs. The bit is reset by a Power-on Reset, or by
writing a logic zero to the flag.
• Bit 2 – BORF: Brown-out Reset Flag
This bit is set if a Brown-out Reset occurs. The bit is reset by a Power-on Reset, or by writing
a logic zero to the flag.
Bit
Read/Write
Initial Value
page 53
CC
INTERNAL
TIME-OUT
Brown-out Reset During Operation
Watchdog System Reset During Operation
RESET
RESET
R
for details on operation of the Watchdog Timer.
7
–
0
V
CC
R
6
–
0
R
5
–
0
V
CK
BOT-
R
4
–
0
WDRF
R/W
3
V
t
TOUT
BORF
See Bit Description
BOT+
R/W
2
EXTRF
R/W
1
PORF
R/W
7728G–AVR–06/10
0
MCUSR
TOUT
.