ATTINY24A-CCUR Atmel, ATTINY24A-CCUR Datasheet - Page 66
ATTINY24A-CCUR
Manufacturer Part Number
ATTINY24A-CCUR
Description
MCU AVR 2KB FLASH 20MHZ 15UFBGA
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY24A-MU.pdf
(286 pages)
Specifications of ATTINY24A-CCUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
12
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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10.3
10.3.1
10.3.2
10.3.3
66
Register Description
ATtiny24A/44A/84A
MCUCR – MCU Control Register
PORTA – Port A Data Register
DDRA – Port A Data Direction Register
Table 10-9.
1.
2.
• Bit 6 – PUD: Pull-up Disable
When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn and
PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01). See
figuring the Pin” on page 54
Bit
0x35 (0x55)
Read/Write
Initial Value
Bit
0x1B (0x3B)
Read/Write
Initial Value
Bit
0x1A (0x3A)
Read/Write
Initial Value
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
EXT_OSC = crystal oscillator or low frequency crystal oscillator is selected as system clock.
EXT_CLOCK = external clock is selected as system clock.
PB1/XTAL2/PCINT9
EXT_OSC
0
EXT_OSC
0
EXT_OSC
0
0
EXT_OSC
PCINT9 • PCIE1
EXT_OSC
PCINT9 Input
XTAL2
PORTA7
BODS
Overriding Signals for Alternate Functions in PB[1:0]
DDA7
R/W
R/W
R/W
7
0
7
0
7
0
(1)
(1)
(1)
(1)
(1)
PORTA6
+
• PCINT9 • PCIE1
DDA6
PUD
R/W
R/W
R/W
6
0
6
0
6
0
for more details about this feature.
PORTA5
DDA5
R/W
R/W
R/W
5
0
5
0
SE
5
0
PORTA4
DDA4
R/W
R/W
4
0
4
0
SM1
R/W
4
0
PB0/XTAL1/PCINT8
EXT_CLOCK
0
EXT_CLOCK
0
EXT_CLOCK
0
EXT_CLOCK
(PCINT8 • PCIE1)
( EXT_CLOCK
(EXT_CLOCK
XTAL1
0
CLOCK/PCINT8 Input
PORTA3
DDA3
R/W
R/W
3
0
3
0
SM0
R/W
3
0
(2)
(2)
(2)
(2)
(2)
(2)
PORTA2
DDA2
+ EXT_OSC
+ EXT_OSC
+ EXT_OSC
+ EXT_OSC
BODSE
R/W
R/W
• EXT_OSC
• PWR_DOWN ) +
2
0
2
0
R/W
2
0
PORTA1
DDA1
R/W
ISC01
R/W
R/W
1
0
1
0
(1)
(1)
(1)
(1)
1
0
(1)
+
• PCINT8 • PCIE1)
PORTA0
DDA0
ISC00
R/W
R/W
R/W
0
0
0
0
0
0
8183C–AVR–03/11
MCUCR
PORTA
DDRA
“Con-
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