ATTINY10-MAHR Atmel, ATTINY10-MAHR Datasheet - Page 31
ATTINY10-MAHR
Manufacturer Part Number
ATTINY10-MAHR
Description
MCU AVR 1024K FLASH 12MHZ 8UDFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY10-MAHR
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Peripherals
POR, PWM, WDT
Number Of I /o
4
Program Memory Size
1KB (512 x 16)
Program Memory Type
FLASH
Ram Size
32 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / Rohs Status
Details
Other names
ATTINY10-MAH
ATTINY10-MAH
ATTINY10-MAH
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8.3.1
8.3.1.1
8.3.1.2
8127D–AVR–02/10
Procedure for Changing the Watchdog Timer Configuration
Safety Level 1
Safety Level 2
To prevent unintentional disabling of the Watchdog or unintentional change of time-out period,
two different safety levels are selected by the fuse WDTON as shown in
See
Table 8-1.
The sequence for changing configuration differs between the two safety levels, as follows:
In this mode, the Watchdog Timer is initially disabled, but can be enabled by writing the WDE bit
to one without any restriction. A special sequence is needed when disabling an enabled Watch-
dog Timer. To disable an enabled Watchdog Timer, the following procedure must be followed:
In this mode, the Watchdog Timer is always enabled, and the WDE bit will always read as one. A
protected change is needed when changing the Watchdog Time-out period. To change the
Watchdog Time-out, the following procedure must be followed:
WDTON
Unprogrammed
Programmed
1. Write the signature for change enable of protected I/O registers to register CCP
2. Within four instruction cycles, in the same operation, write WDE and WDP bits
1. Write the signature for change enable of protected I/O registers to register CCP
2. Within four instruction cycles, write the WDP bit. The value written to WDE is irrelevant
“Procedure for Changing the Watchdog Timer Configuration” on page 31
WDT Configuration as a Function of the Fuse Settings of WDTON
Safety
Level
1
2
WDT
Initial State
Disabled
Enabled
How to
Disable the WDT
Protected change
sequence
Always enabled
ATtiny4/5/9/10
How to
Change Time-out
No limitations
Protected change
sequence
Table 8-1 on page
for details.
31.
31
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