ATTINY26-16SUR Atmel, ATTINY26-16SUR Datasheet - Page 79

• Manufacturer Part Number: ATTINY26-16SUR
• Description: IC MCU AVR 2K 16MHZ IND 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY26-16SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1477K–AVR–08/10
The WDP2, WDP1 and WDP0 bits determine the Watchdog Timer prescaling when the Watch-
dog Timer is enabled. The different prescaling values and their corresponding time-out periods
are shown in Table 38.
Table 38. Watchdog Timer Prescale Select
Note:
WDP2
0
0
0
0
1
1
1
1
1. The frequency of the Watchdog Oscillator is voltage dependent. The WDR – Watchdog Reset
WDP1
– instruction should always be executed before the Watchdog Timer is enabled. This ensures
that the reset period will be in accordance with the Watchdog Timer prescale settings. If the
Watchdog Timer is enabled without reset, the Watchdog Timer may not start counting from
zero.
0
0
1
1
0
0
1
1
WDP0
0
1
0
1
0
1
0
1
1,024K (1,048,576)
2,048K (2,097,152)
Oscillator Cycles
Number of WDT
128K (131,072)
256K (262,144)
512K (524,288)
16K (16,384)
32K (32,768)
64K (65,536)
(1)
Typical Time-out
at V
17.1 ms
34.3 ms
68.5 ms
0.14 s
0.27 s
0.55 s
CC
1.1 s
2.2 s
= 3.0V
Typical Time-out
at V
16.3 ms
32.5 ms
65 ms
0.13 s
0.26 s
0.52 s
CC
1.0 s
2.1 s
= 5.0V
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