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ATtiny10/11/12

5

The device is manufactured using Atmel’s high-density nonvolatile memory technology. By combining an RISC 8-bit CPU
with Flash on a monolithic chip, the Atmel ATtiny12 is a powerful microcontroller that provides a highly-flexible and cost-
effective solution to many embedded control applications.

The ATtiny12 AVR is supported with a full suite of program and system development tools including: macro assemblers,
program debugger/simulators, in-circuit emulators, and evaluation kits.

Pin Descriptions

VCC

Supply voltage pin.

GND

Ground pin.

Port B (PB5..PB0)

Port B is a 6-bit I/O port. PB4..0 are I/O pins that can provide internal pull-ups (selected for each bit). On ATtiny10/11, PB5
is input only. On ATtiny12, PB5 is input or open-drain output. The port pins are tri-stated when a reset condition becomes
active, even if the clock is not running. The use of pins PB5..3 as input or I/O pins is limited, depending on reset and clock
settings, as shown below.

Notes:

1. “Used” means the pin is used for reset or clock purposes.
2. “-” means the pin function is unaffected by the option.
3. Input means the pin is a port input pin.
4. On ATtiny10/11, PB5 is input only. On ATtiny12, PB5 is input or open-drain output.
5. I/O means the pin is a port input/output pin.

XTAL1

Input to the inverting oscillator amplifier and input to the internal clock operating circuit.

XTAL2

Output from the inverting oscillator amplifier.

RESET

Reset input. An external reset is generated by a low level on the RESET pin. Reset pulses longer than 50 ns will generate
a reset, even if the clock is not running. Shorter pulses are not guaranteed to generate a reset.

Table 2. PB5..PB3 Functionality vs. Device Clocking Options

Device Clocking Option

PB5

PB4

PB3

External Reset Enabled

Used

-

-

External Reset Disabled

Input

/I/O

-

-

External Crystal

-

Used

Used

External Low-frequency Crystal

-

Used

Used

External Ceramic Resonator

-

Used

Used

External RC Oscillator

-

I/O

Used

External Clock

-

I/O

Used

Internal RC Oscillator

-

I/O

I/O

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Содержание AVR ATtiny10 Series

Страница 1: ...r Idle and Power down Modes External and Internal Interrupt Sources In System Programmable via SPI Port ATtiny12 Enhanced Power on Reset Circuit ATtiny12 Internal Calibrated RC Oscillator ATtiny12 Spe...

Страница 2: ...wo software selectable power saving modes The Idle Mode stops the CPU while allow ing the timer counters and interrupt system to continue functioning The Power down Mode saves the register contents bu...

Страница 3: ...RDWARE STACK MCU CONTROL REGISTER GENERAL PURPOSE REGISTERS INSTRUCTION REGISTER TIMER COUNTER INSTRUCTION DECODER DATA DIR REG PORTB DATA REGISTER PORTB PROGRAMMING LOGIC OSCILLATORS TIMING AND CONTR...

Страница 4: ...reezes the oscillator disabling all other chip functions until the next interrupt or hardware reset The wake up or interrupt on pin change features enable the ATtiny12 to be highly responsive to exter...

Страница 5: ...pins is limited depending on reset and clock settings as shown below Notes 1 Used means the pin is used for reset or clock purposes 2 means the pin function is unaffected by the option 3 Input means t...

Страница 6: ...12 uses a separate calibrated oscillator Crystal Oscillator XTAL1 and XTAL2 are input and output respectively of an inverting amplifier which can be configured for use as an on chip oscillator as show...

Страница 7: ...ct memory access This pointer is called the Z pointer and can address the register file and the Flash program memory The ALU supports arithmetic and logic functions between registers or between a cons...

Страница 8: ...egisters in the I O space with an additional global interrupt enable bit in the status register All the different interrupts have a separate interrupt vector in the interrupt vector table at the begin...

Страница 9: ...purpose working registers Within a single clock cycle ALU operations between registers in the register file are executed The ALU operations are divided into three main categories arithmetic logic and...

Страница 10: ...r Rd Figure 8 Direct Single register Addressing The operand is contained in register d Rd Register Indirect Figure 9 Indirect Register Addressing The register accessed is the one pointed to by the Z r...

Страница 11: ...Register Addressing Two Registers Operands are contained in register r Rr and d Rd The result is stored in register d Rd I O Direct Figure 11 I O Direct Addressing Operand address is contained in 6 bi...

Страница 12: ...dware stack is 9 bits wide and stores the program counter PC return address while subroutines and interrupts are executed RCALL instructions and interrupts push the PC return address onto stack level...

Страница 13: ...al clock division is used Figure 14 shows the parallel instruction fetches and instruction executions enabled by the Harvard architecture and the fast access register file concept This is the basic pi...

Страница 14: ...the interrupts to be enabled The individual interrupt enable control is then performed in separate control registers If the global interrupt enable register is cleared zero none of the interrupts Tab...

Страница 15: ...arithmetical or logical operation See the Instruction Set description for detailed information Bit 1 Z Zero Flag The zero flag Z indicates a zero result from an arithmetical or logical operation See...

Страница 16: ...EXT_INT0 IRQ0 handler 002 rjmp PIN_CHANGE Pin change handler 003 rjmp TIM0_OVF Timer0 overflow handler 004 rjmp EE_RDY EEPROM Ready handler 005 rjmp ANA_COMP Analog Comparator handler 006 MAIN instr x...

Страница 17: ...bles an interrupt source the interrupt vectors are not used and regular program code can be placed at these locations The circuit diagram in Figure 16 shows the reset logic for the ATtiny10 11 Figure...

Страница 18: ...l Characteristics on page 54 If the built in start up delay is sufficient RESET can be connected to VCC directly or via an external pull up resistor By hold ing the RESET pin low for a period after VC...

Страница 19: ...e 0 6VCC V VBOT Brown out Reset Threshold Voltage BODLEVEL 1 1 7 1 8 1 9 V BODLEVEL 0 2 6 2 7 2 8 Table 9 ATtiny12 Clock Options and Start up Times CKSEL3 0 Clock Source Start up Time VCC 1 8V BODLEVE...

Страница 20: ...e invokes a delay counter which determines the delay for which the device is kept in Reset after VCC rise The time out period of the delay counter can be defined by the user through the CKSEL fuses Th...

Страница 21: ...it can be enabled disabled by the fuse BODEN When BODEN is enabled BODEN programmed and VCC decreases below the trigger level the brown out reset is immediately activated When VCC increases above the...

Страница 22: ...tchdog Reset during Operation MCU Status Register MCUSR of the ATtiny10 11 The MCU Status Register provides information on which reset source caused an MCU reset Bit 7 2 Res Reserved Bits These bits a...

Страница 23: ...it is reset by a power on reset or by writing a logic zero to the flag Bit 1 EXTRF EXTernal Reset Flag This bit is set if an external reset occurs The bit is reset by a power on reset or by writing a...

Страница 24: ...membered until the global interrupt enable bit is set one and will be executed by order of priority Note that external level interrupt does not have a flag and will only be remembered for as long as t...

Страница 25: ...When an event on any input or I O pin triggers an interrupt request PCIF becomes set one If the I bit in SREG and the PCIE bit in GIMSK are set one the MCU will jump to the interrupt vector at address...

Страница 26: ...output This feature provides a way of generating a software interrupt Also observe that the pin change interrupt will trigger even if the pin activity triggers another interrupt for example the exter...

Страница 27: ...s following SLEEP are executed before the pin change interrupt routine The contents of the register file and I O memory are unaltered If a reset occurs during Sleep Mode the MCU wakes up and executes...

Страница 28: ...s If the wake up period is shorter than two watchdog oscillator cycles the MCU will wake up if the input has the required level for the duration of the wake up period If the wake up condition disappea...

Страница 29: ...r0 The 8 bit Timer Counter0 can select clock source from CK prescaled CK or an external pin In addition it can be stopped as described in the specification for the Timer Counter0 Control Register TCCR...

Страница 30: ...0 Bits 7 3 Res Reserved bits These bits are reserved bits in the ATtiny10 11 12 and always read as zero Bits 2 1 0 CS02 CS01 CS00 Clock Select0 bit 2 1 and 0 The Clock Select0 bits 2 1 and 0 define th...

Страница 31: ...controlling the Watchdog Timer prescaler the Watchdog reset interval can be adjusted as shown in Table 16 See characterization data for typical values at other VCC levels The WDR Watchdog Reset instru...

Страница 32: ...2 1 and 0 The WDP2 WDP1 and WDP0 bits determine the Watchdog Timer prescaling when the Watchdog Timer is enabled The different prescaling values and their corresponding time out periods are shown in T...

Страница 33: ...R register contains the data to be written to the EEPROM in the address given by the EEAR register For the EEPROM read operation the EEDR contains the data read out from the EEPROM at the address give...

Страница 34: ...cles before the next instruction is executed The user should poll the EEWE bit before starting the read operation If a write operation is in progress when new data or address is written to the EEPROM...

Страница 35: ...bit in ACSR Otherwise an interrupt can occur when the bit is changed Bit 6 AINBG Analog Comparator Bandgap Select in ATtiny12 In ATtiny12 when this bit is set a fixed bandgap voltage of 1 22 0 05V rep...

Страница 36: ...I O port Three I O memory address locations are allocated for Port B one each for the Data Register PORTB 18 Data Direction Register DDRB 17 and the Port B Input Pins PINB 16 The Port B Input Pins add...

Страница 37: ...hen reading PINB the logical values present on the pins are read PB2 T0 Timer Counter0 External Counter Input ATtiny10 11 12 SCK Serial Clock Input for Serial Programming ATtiny12 PB3 XTAL1 Oscillator...

Страница 38: ...wing alternate functions RESET Port B Bit 5 When the RSTDISBL fuse is unprogrammed this pin serves as external reset When the RSTDISBL fuse is programmed this pin is a general input pin In ATtiny12 it...

Страница 39: ...ion of CKSEL2 0 to use Default value is 100 internal RC oscillator The status of the fuse bits is not affected by Chip Erase Note 1 If the RSTDISBL Fuse is programmed then the programming hardware sho...

Страница 40: ...they are 1 000 1E indicates manufactured by Atmel 2 001 90 indicates 1 Kb Flash memory 3 002 04 indicates ATtiny11 device when signature byte 001 is 90 For the ATtiny12 1 they are 1 000 1E indicates...

Страница 41: ...oltage 12V serial programming mode and a low voltage serial programming mode The 12V is used for programming enable only and no current of significance is drawn by this pin The Low voltage Serial Pro...

Страница 42: ...grammed one byte at a time by supplying first the address then the low and high data byte The write instruction is self timed wait until the PB2 RDY BSY pin goes high 3 The EEPROM array ATtiny12 only...

Страница 43: ...00 0_0000_0000_00 Wait after Instr 3 until PB2 goes high Repeat Instr 1 Instr 2 and Instr 3 for each new address Read Flash High and Low Address PB0 PB1 PB2 0_0000_0010_00 0_0100_1100_00 x_xxxx_xxxx_x...

Страница 44: ..._0110_1100_00 0_0000_0000_00 Wait after Instr 4 until PB2 goes high Write 2 1 0 to program the lock bit Read Fuse bits ATtiny10 11 PB0 PB1 PB2 0_0000_0100_00 0_0100_1100_00 x_xxxx_xxxx_xx 0_0000_0000_...

Страница 45: ...t execute the Chip Erase instruction The Chip Erase instruction turns the content of every memory location in both the program and EEPROM arrays into FF The program and EEPROM memory arrays have separ...

Страница 46: ...ut of synchronization When in sync the second byte 53 will echo back when issuing the third byte of the Programming Enable instruction Whether the echo is correct or not all 4 bytes of the instruction...

Страница 47: ...east tWD_FLASH or tWD_EEPROM before programming the next byte As a chip erased device con tains FF in all locations programming of addresses that are meant to contain FF can be skipped This does not a...

Страница 48: ...low data o from program memory at word address a b Write Program Memory 0100 H000 xxxx xxxa bbbb bbbb iiii iiii Write H high or low data i to program memory at word address a b Read EEPROM Memory 1010...

Страница 49: ...Oscillator Period VCC 2 7 4 0V 250 ns 1 tCLCL Oscillator Frequency VCC 4 0 5 5V 0 8 MHz tCLCL Oscillator Period VCC 4 0 5 5V 125 ns tSHSL SCK Pulse Width High 2 tCLCL ns tSLSH SCK Pulse Width Low 2 t...

Страница 50: ...device at these or other conditions beyond those indicated in the operational sections of this specification is not implied Exposure to absolute maximum rat ing conditions for extended periods may af...

Страница 51: ...12 mA VCC 5V IOL 6 mA VCC 3V 0 6 0 5 V V VOH Output High Voltage 4 Port B IOH 3 mA VCC 5V IOH 1 5 mA VCC 3V 4 3 2 3 V V IIL Input Leakage Current I O Pin VCC 5 5V Pin Low Absolute value 8 0 A IIH Inp...

Страница 52: ...est conditions 3 mA at VCC 5V 1 5 mA at VCC 3V under steady state conditions non transient the following must be observed 1 The sum of all IOH for all ports should not exceed 100 mA If IOH exceeds the...

Страница 53: ...tCLCL Clock Period 500 167 ns tCHCX High Time 200 67 ns tCLCX Low Time 200 67 ns tCLCH Rise Time 1 6 0 5 s tCHCL Fall Time 1 6 0 5 s External Clock Drive ATtiny12 Symbol Parameter VCC 1 8V to 2 7V VC...

Страница 54: ...age and frequency The current drawn from capacitive loaded pins may be estimated for one pin as CL VCC f where CL load capacitance VCC operating voltage and f average switching frequency of I O pin Th...

Страница 55: ...3 5 4 4 5 5 5 5 6 ACTIVE SUPPLY CURRENT vs Vcc FREQUENCY 4 MHz I CC mA VCC V T 85 C A T 25 C A 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 VCC 6V VCC 5 5V VCC 5V VCC 4 5V VCC...

Страница 56: ...n Supply Current vs VCC 0 1 1 2 2 3 2 2 5 3 3 5 4 4 5 5 5 5 6 T 25 C A T 85 C A IDLE SUPPLY CURRENT vs Vcc VCC V FREQUENCY 4 MHz I mA CC 0 1 2 3 4 5 6 7 8 9 1 5 2 2 5 3 3 5 4 4 5 5 5 5 6 T 85 C A T 25...

Страница 57: ...rent vs VCC 0 10 20 30 40 50 60 70 80 90 1 5 2 2 5 3 3 5 4 4 5 5 5 5 6 T 85 C A T 25 C A POWER DOWN SUPPLY CURRENT vs Vcc VCC V WATCHDOG TIMER ENABLED I A CC 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 1...

Страница 58: ...Offset Voltage vs Common Mode Voltage 0 2 4 6 8 10 12 14 16 18 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 ANALOG COMPARATOR OFFSET VOLTAGE vs V 5V cc COMMON MODE VOLTAGE Common Mode Voltage V Offset Voltage mV...

Страница 59: ...Frequency vs VCC 60 50 40 30 20 10 0 10 0 0 5 1 5 1 2 2 5 3 5 3 4 4 5 5 6 6 5 7 5 5 ANALOG COMPARATOR INPUT LEAKAGE CURRENT T 25 C A I nA ACLK V V IN V 6V CC 0 200 400 600 800 1000 1200 1400 1600 1 5...

Страница 60: ...vs Input Voltage Figure 46 Pull up Resistor Current vs Input Voltage 0 20 40 60 80 100 120 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 PULL UP RESISTOR CURRENT vs INPUT VOLTAGE V 5V CC I A OP V V OP T 85 C A T 2...

Страница 61: ...Current vs Output Voltage 0 10 20 30 40 50 60 70 80 0 0 5 1 1 5 2 2 5 3 V 5V CC I mA OL V V OL T 85 C A T 25 C A I O PIN SINK CURRENT vs OUTPUT VOLTAGE 0 2 4 6 8 10 12 14 16 18 0 0 5 1 1 5 2 2 5 3 3...

Страница 62: ...0 I O Pin Source Current vs Output Voltage 0 5 10 15 20 25 30 0 0 5 1 1 5 2 I mA OL V V OL T 85 C A T 25 C A I O PIN SINK CURRENT vs OUTPUT VOLTAGE V 2 7V CC 0 1 2 3 4 5 6 0 0 5 1 1 5 2 2 5 3 I O PIN...

Страница 63: ...Figure 52 I O Pin Input Hysteresis vs VCC 0 0 5 1 1 5 2 2 5 2 7 4 0 5 0 Threshold Voltage V VCC I O PIN INPUT THRESHOLD VOLTAGE vs Vcc T 25 C A 0 0 02 0 04 0 06 0 08 0 1 0 12 0 14 0 16 0 18 2 7 4 0 5...

Страница 64: ...d frequency The current drawn from capacitive loaded pins may be estimated for one pin as CL VCC f where CL load capacitance VCC operating voltage and f average switching frequency of I O pin The part...

Страница 65: ...Offset Voltage vs Common Mode Voltage 0 2 4 6 8 10 12 14 16 18 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 ANALOG COMPARATOR OFFSET VOLTAGE vs V 5V CC COMMON MODE VOLTAGE Common Mode Voltage V Offset Voltage mV...

Страница 66: ...Frequency vs VCC 60 50 40 30 20 10 0 10 0 0 5 1 5 1 2 2 5 3 5 3 4 4 5 5 6 6 5 7 5 5 ANALOG COMPARATOR INPUT LEAKAGE CURRENT T 25 C A I nA ACLK V V IN V 6V CC 0 200 400 600 800 1000 1200 1400 1600 1 5...

Страница 67: ...t a time Figure 58 Pull up Resistor Current vs Input Voltage VCC 5V Figure 59 Pull up Resistor Current vs Input Voltage VCC 2 7V 0 20 40 60 80 100 120 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 I A OP V V OP T 8...

Страница 68: ...s Output Voltage VCC 5V Figure 61 I O Pin Source Current vs Output Voltage VCC 5V 0 10 20 30 40 50 60 70 0 0 5 1 1 5 2 2 5 3 I mA OL V V OL T 85 C A T 25 C A 0 2 4 6 8 10 12 14 16 18 20 0 0 5 1 1 5 2...

Страница 69: ...in Sink Current vs Output Voltage VCC 2 7V Figure 63 I O Pin Source Current vs Output Voltage VCC 2 7V 0 5 10 15 20 25 0 0 5 1 1 5 2 I mA OL V V OL T 85 C A T 25 C A 0 1 2 3 4 5 6 0 0 5 1 1 5 2 2 5 3...

Страница 70: ...O Pin Input Threshold Voltage vs VCC TA 25 C Figure 65 I O Pin Input Hysteresis vs VCC TA 25 C 0 0 5 1 1 5 2 2 5 2 7 4 0 5 0 Threshold Voltage V VCC 0 0 02 0 04 0 06 0 08 0 1 0 12 0 14 0 16 0 18 2 7 4...

Страница 71: ...EG I T H S V N Z C page 14 3E Reserved 3D Reserved 3C Reserved 3B GIMSK INT0 PCIE page 24 3A GIFR INTF0 PCIF page 25 39 TIMSK TOIE0 page 25 38 TIFR TOV0 page 25 37 Reserved 36 Reserved 35 MCUCR SE SM...

Страница 72: ...NT0 PCIE page 24 3A GIFR INTF0 PCIF page 25 39 TIMSK TOIE0 page 25 38 TIFR TOV0 page 25 37 Reserved 36 Reserved 35 MCUCR PUD SE SM ISC01 ISC00 page 26 34 MCUSR WDRF BORF EXTRF PORF page 23 33 TCCR0 CS...

Страница 73: ...Z N V C H 1 CPI Rd K Compare Register with Immediate Rd K Z N V C H 1 SBRC Rr b Skip if Bit in Register Cleared if Rr b 0 PC PC 2 or 3 None 1 2 SBRS Rr b Skip if Bit in Register is Set if Rr b 1 PC P...

Страница 74: ...bles Rd 3 0 Rd 7 4 Rd 7 4 Rd 3 0 None 1 BSET s Flag Set SREG s 1 SREG s 1 BCLR s Flag Clear SREG s 0 SREG s 1 BST Rr b Bit Store from Register to T T Rr b T 1 BLD Rd b Bit load from T to Register Rd b...

Страница 75: ...Ttiny11 6PC ATtiny11 6SC 8P3 8S2 Commercial 0 C to 70 C ATtiny11 6PI ATtiny11 6SI 8P3 8S2 Industrial 40 C to 85 C 1 8 5 5V 1 ATtiny12V 1PC ATtiny12V 1SC 8P3 8S2 Commercial 0 C to 70 C ATtiny12V 1PI AT...

Страница 76: ...00 7 62 0 15 REF 430 10 9 MAX 012 305 008 203 020 508 012 305 213 5 41 205 5 21 330 8 38 300 7 62 PIN 1 050 1 27 BSC 212 5 38 203 5 16 080 2 03 070 1 78 013 330 004 102 0 8 REF 010 254 007 178 035 889...

Страница 77: ...arters 2325 Orchard Parkway San Jose CA 95131 TEL 408 441 0311 FAX 408 487 2600 Europe Atmel U K Ltd Coliseum Business Centre Riverside Way Camberley Surrey GU15 3YL England TEL 44 1276 686 677 FAX 44...

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