ATTINY10-MAHR Atmel, ATTINY10-MAHR Datasheet - Page 41
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ATTINY10-MAHR
Manufacturer Part Number
ATTINY10-MAHR
Description
MCU AVR 1024K FLASH 12MHZ 8UDFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY10-MAHR
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Peripherals
POR, PWM, WDT
Number Of I /o
4
Program Memory Size
1KB (512 x 16)
Program Memory Type
FLASH
Ram Size
32 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / Rohs Status
Details
Other names
ATTINY10-MAH
ATTINY10-MAH
ATTINY10-MAH
- Current page: 41 of 169
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10. I/O Ports
10.1
8127D–AVR–02/10
Overview
All AVR ports have true Read-Modify-Write functionality when used as general digital I/O ports.
This means that the direction of one port pin can be changed without unintentionally changing
the direction of any other pin with the SBI and CBI instructions. The same applies when chang-
ing drive value (if configured as output) or enabling/disabling of pull-up resistors. Each output
buffer has symmetrical drive characteristics with both high sink and source capability. The pin
driver is strong enough to drive LED displays directly. All port pins have individually selectable
pull-up resistors with a supply-voltage invariant resistance. All I/O pins have protection diodes to
both V
page 117
Figure 10-1. I/O Pin Equivalent Schematic
All registers and bit references in this section are written in general form. A lower case “x” repre-
sents the numbering letter for the port, and a lower case “n” represents the bit number. However,
when using the register or bit defines in a program, the precise form must be used. For example,
PORTB3 for bit no. 3 in Port B, here documented generally as PORTxn. The physical I/O Regis-
ters and bit locations are listed in
Four I/O memory address locations are allocated for each port, one each for the Data Register –
PORTx, Data Direction Register – DDRx, Pull-up Enable Register – PUEx, and the Port Input
Pins – PINx. The Port Input Pins I/O location is read only, while the Data Register, the Data
Direction Register, and the Pull-up Enable Register are read/write. However, writing a logic one
to a bit in the PINx Register, will result in a toggle in the corresponding bit in the Data Register.
Using the I/O port as General Digital I/O is described in
42. Most port pins are multiplexed with alternate functions for the peripheral features on the
device. How each alternate function interferes with the port pin is described in
Functions” on page
nate functions.
Note that enabling the alternate function of some of the port pins does not affect the use of the
other pins in the port as general digital I/O.
CC
and Ground as indicated in
for a complete list of parameters.
Pxn
46. Refer to the individual module sections for a full description of the alter-
“Register Description” on page
C
pin
Figure 10-1 on page
“Ports as General Digital I/O” on page
41. See
"General Digital I/O" for
51.
See Figure
R
“Electrical Characteristics” on
Details
pu
ATtiny4/5/9/10
Logic
“Alternate Port
41
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