ATTINY26L-8SUR Atmel, ATTINY26L-8SUR Datasheet - Page 32
ATTINY26L-8SUR
Manufacturer Part Number
ATTINY26L-8SUR
Description
IC MCU AVR 2K 5V 8MHZ 20SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY26L-8SUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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)
2.7 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
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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
1477K–AVR–08/10
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