ATTINY24-15SSZ Atmel, ATTINY24-15SSZ Datasheet - Page 120
ATTINY24-15SSZ
Manufacturer Part Number
ATTINY24-15SSZ
Description
MCU AVR 2K FLASH 15MHZ 14-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY24-15SSZ.pdf
(225 pages)
Specifications of ATTINY24-15SSZ
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
12
Eeprom Size
128 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
128 x 8
Program Memory Size
2KB (2K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Cpu Family
ATtiny
Device Core
AVR
Device Core Size
8b
Frequency (max)
16MHz
Interface Type
SPI/UART
Total Internal Ram Size
128Byte
# I/os (max)
12
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
14
Package Type
SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY24-15SSZ
Manufacturer:
ATMEL
Quantity:
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Part Number:
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Manufacturer:
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15.3
15.3.1
120
Register Description
Atmel ATtiny24/44/84 [Preliminary]
GTCCR – General Timer/Counter Control Register
Each half period of the external clock applied must be longer than one system clock cycle to
ensure correct sampling. The external clock must be guaranteed to have less than half the
system clock frequency (f
uses sampling, the maximum frequency of an external clock it can detect is half the sampling
frequency (Nyquist sampling theorem). However, due to variation of the system clock fre-
quency and duty cycle caused by oscillator source (crystal, resonator, and capacitor)
tolerances, it is recommended that the maximum frequency of an external clock source is less
than f
An external clock source can not be prescaled.
Figure 15-2. Prescaler for Timer/Counter0
Note:
• Bit 7 – TSM: Timer/Counter Synchronization Mode
Writing the TSM bit to logical one activates the timer/counter synchronization mode. In this
mode, the value that is written to the PSR10 bit is kept, hence keeping the prescaler reset sig-
nal asserted. This ensures that the timer/counter is halted and can be configured without the
risk of advancing during configuration. When the TSM bit is written to logical zero, the PSR10
bit is cleared by hardware, and the timer/counter starts counting.
• Bit 0 – PSR10: Prescaler 0 Reset Timer/Counter n
When this bit is set to one, the timer/counter n prescaler will be reset. This bit is normally
cleared immediately by hardware, except if the TSM bit is set.
Bit
0x23 (0x43)
Read/Write
Initial Value
clk_I/O
1. The synchronization logic on the input pins (
/2.5.
PSR10
clk
T0
I/O
TSM
R/W
7
0
Synchronization
ExtClk
R
6
–
0
< f
Clear
clk_I/O
R
5
–
0
/2) given a 50/50 duty cycle. Because the edge detector
R
4
–
0
T0)
R
3
–
0
is shown in
R
2
–
0
clk
Figure 15-1 on page
T0
R
1
–
0
PSR10
R/W
0
0
7701D–AVR–09/10
119.
GTCCR
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