ATTINY9-MAHR Atmel, ATTINY9-MAHR Datasheet - Page 30
ATTINY9-MAHR
Manufacturer Part Number
ATTINY9-MAHR
Description
IC MCU AVR 1K FLASH 8UDFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY9-MAHR.pdf
(169 pages)
Specifications of ATTINY9-MAHR
Package / Case
8-UDFN Exposed Pad
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
12MHz
Number Of I /o
4
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
32 x 8
Program Memory Size
1KB (1K x 8)
Oscillator Type
Internal
Peripherals
POR, PWM, WDT
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY9-MAHR
Manufacturer:
ST
Quantity:
101
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8.3
30
Watchdog Timer
ATtiny4/5/9/10
30
reset time-out.
Figure 8-5.
The Watchdog Timer is clocked from an on-chip oscillator, which runs at 128 kHz. See
6. By controlling the Watchdog Timer prescaler, the Watchdog Reset interval can be adjusted as
shown in
Timer. The Watchdog Timer is also reset when it is disabled and when a device reset occurs.
Ten different clock cycle periods can be selected to determine the reset period. If the reset
period expires without another Watchdog Reset, the ATtiny4/5/9/10 resets and executes from
the Reset Vector. For timing details on the Watchdog Reset, refer to
Figure 8-6.
The Wathdog Timer can also be configured to generate an interrupt instead of a reset. This can
be very helpful when using the Watchdog to wake-up from Power-down.
for details on operation of the Watchdog Timer and
CC
Table 8-2 on page
Watchdog Reset During Operation
Watchdog Timer
WATCHDOG
OSCILLATOR
RESET
128 kHz
WDP0
WDP1
WDP2
WDP3
WDE
33. The WDR – Watchdog Reset – instruction resets the Watchdog
CK
Table 16-4 on page 120
MCU RESET
PRESCALER
WATCHDOG
MUX
Table 8-3 on page
8127D–AVR–02/10
for details on
Figure 8-
34.
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