ATTINY43U-SUR Atmel, ATTINY43U-SUR Datasheet - Page 56
ATTINY43U-SUR
Manufacturer Part Number
ATTINY43U-SUR
Description
MCU AVR 4KB FLASH 8MHZ 20SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY43U-SU.pdf
(182 pages)
Specifications of ATTINY43U-SUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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ATtiny43U
• Bits 5, 2:0 – WDP[3:0]: Watchdog Timer Prescaler 3, 2, 1, and 0
The WDP[3:0] bits determine the Watchdog Timer prescaling when the Watchdog Timer is
enabled. The different prescaling values and their corresponding Timeout Periods are shown in
Table 9-3 on page
Table 9-3.
WDP3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
WDP2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Watchdog Timer Prescale Select
56.
WDP1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
WDP0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Number of WDT Oscillator
1024K cycles
128K cycles
256K cycles
512K cycles
16K cycles
32K cycles
64K cycles
2K cycles
4K cycles
8K cycles
Cycles
Reserved
Typical Time-out at
V
CC
0.125 s
0.25 s
16 ms
32 ms
64 ms
0.5 s
1.0 s
2.0 s
4.0 s
8.0 s
= 5.0V
8048B–AVR–03/09
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