ATTINY26-16PJ Atmel, ATTINY26-16PJ Datasheet - Page 32

• Manufacturer Part Number: ATTINY26-16PJ
• Description: ID MCU AVR 2K 5V 16MHZ 20-DIP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY26-16PJ

• 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-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

System Control
and Reset
32
ATtiny26(L)
The ATtiny26(L) provides four sources of reset:
•
•
•
•
During reset, all I/O Registers are then set to their initial values, and the program starts execu-
tion from address $000. The instruction placed in address $000 must be an RJMP – Relative
Jump – instruction to the reset handling routine. If the program never enables an interrupt
source, the interrupt vectors are not used, and regular program code can be placed at these
locations. Figure 25 shows the reset logic for the ATtiny26(L). Table 16 shows the timing and
electrical parameters of the reset circuitry for ATtiny26(L).
Figure 25. Reset Logic for the ATtiny26(L)
Power-on Reset. The MCU is reset when the supply voltage is below the Power-on Reset
threshold (V
External Reset. To use the PB7/RESET pin as an External Reset, instead of I/O pin, unprogram
(“1”) the RSTDISBL Fuse. The MCU is reset when a low level is present on the RESET pin for
more than 500 ns.
Watchdog Reset. The MCU is reset when the Watchdog timer period expires and the Watchdog is
enabled.
Brown-out Reset. The MCU is reset when the supply voltage V
threshold (V
BODLEVEL
BODEN
POT
BOT
).
).
CKSEL[3:0]
Reset Circuit
Brown-Out
Generator
Clock
CK
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
CC
is below the Brown-out Reset
TIMEOUT
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