ATtiny28L

Manufacturer Part NumberATtiny28L
ManufacturerAtmel Corporation
ATtiny28L datasheets
 


Specifications of ATtiny28L

Flash (kbytes)2 KbytesPin Count28
Max. Operating Frequency4 MHzCpu8-bit AVR
Hardware Qtouch AcquisitionNoMax I/o Pins11
Ext Interrupts10Usb SpeedNo
Usb InterfaceNoGraphic LcdNo
Video DecoderNoCamera InterfaceNo
Analog Comparators1Resistive Touch ScreenNo
Temp. SensorNoCrypto EngineNo
Sram (kbytes)0.03Self Program MemoryNO
Dram MemoryNoNand InterfaceNo
PicopowerNoTemp. Range (deg C)-40 to 85
I/o Supply Class1.8 to 5.5Operating Voltage (vcc)1.8 to 5.5
FpuNoMpu / Mmuno / no
Timers132khz RtcNo
Calibrated Rc OscillatorYes  
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Features
®
Utilizes the AVR
RISC Architecture
AVR – High-performance and Low-power RISC Architecture
– 90 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General-purpose Working Registers
– Up to 4 MIPS Throughput at 4 MHz
Nonvolatile Program Memory
– 2K Bytes of Flash Program Memory
– Endurance: 1,000 Write/Erase Cycles
– Programming Lock for Flash Program Data Security
Peripheral Features
– Interrupt and Wake-up on Low-level Input
– One 8-bit Timer/Counter with Separate Prescaler
– On-chip Analog Comparator
– Programmable Watchdog Timer with On-chip Oscillator
– Built-in High-current LED Driver with Programmable Modulation
Special Microcontroller Features
– Low-power Idle and Power-down Modes
– External and Internal Interrupt Sources
– Power-on Reset Circuit with Programmable Start-up Time
– Internal Calibrated RC Oscillator
Power Consumption at 1 MHz, 2V, 25°C
– Active: 3.0 mA
– Idle Mode: 1.2 mA
– Power-down Mode: <1 µA
I/O and Packages
– 11 Programmable I/O Lines, 8 Input Lines and a High-current LED Driver
– 28-lead PDIP, 32-lead TQFP, and 32-pad MLF
Operating Voltages
– V
: 1.8V - 5.5V for the ATtiny28V
CC
– V
: 2.7V - 5.5V for the ATtiny28L
CC
Speed Grades
– 0 - 1.2 MHz for the ATtiny28V
– 0 - 4 MHz For the ATtiny28L
Pin Configurations
PDIP
RESET
1
28
PA0
PD0
2
27
PA1
PD1
3
26
PA3
PD2
4
25
PA2 (IR)
PD3
5
24
PB7
PD4
6
23
PB6
VCC
7
22
GND
GND
8
21
NC
XTAL1
9
20
VCC
XTAL2
10
19
PB5
PD5
11
18
PB4 (INT1)
PD6
12
17
PB3 (INT0)
PD7
13
16
PB2 (T0)
(AIN0) PB0
14
15
PB1 (AIN1)
TQFP/QFN/MLF
PD3
1
24
PB7
PD4
2
23
PB6
NC
3
22
NC
VCC
4
21
GND
GND
5
20
NC
19
NC
NC
6
XTAL1
7
18
VCC
17
PB5
XTAL2
8
Note: This is a summary document. A complete document
is available on our Web site at www.atmel.com.
8-bit
Microcontroller
with 2K Bytes of
Flash
ATtiny28L
ATtiny28V
Summary
Rev. 1062FS–AVR–07/06
1

ATtiny28L Summary of contents

  • Page 1

    ... PDIP, 32-lead TQFP, and 32-pad MLF • Operating Voltages – 1.8V - 5.5V for the ATtiny28V CC – 2.7V - 5.5V for the ATtiny28L CC • Speed Grades – 1.2 MHz for the ATtiny28V – MHz For the ATtiny28L Pin Configurations PDIP RESET 1 28 PA0 PD0 2 27 PA1 PD1 ...

  • Page 2

    ... Description Block Diagram ATtiny28L/V 2 The ATtiny28 is a low-power CMOS 8-bit microcontroller based on the AVR RISC archi- tecture. By executing powerful instructions in a single clock cycle, the ATtiny28 achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed. The AVR core combines a rich instruction set with 32 general-purpose working registers ...

  • Page 3

    ... Input to the inverting oscillator amplifier and input to the internal clock operating circuit. Output from the inverting oscillator amplifier. 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. ATtiny28L/V 3 ...

  • Page 4

    ... Some of the status flags are cleared by writing a logical “1” to them. Note that the CBI and SBI instructions will operate on all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers $00 to $1F only. ATtiny28L/V 4 Bit 6 ...

  • Page 5

    ... PC ← then PC ← then PC ← then PC ← then PC ← then PC ← then PC ← then PC ← ATtiny28L/V Flags # Clocks Z,C,N,V,H 1 Z,C,N,V,H 1 Z,C,N,V,H ...

  • Page 6

    ... Set T in SREG CLT Clear T in SREG SEH Set Half-carry Flag in SREG CLH Clear Half-carry Flag in SREG NOP No Operation SLEEP Sleep WDR Watchdog Reset ATtiny28L/V 6 Operation Rd ← (Z) (Z) ← ← ← ← ← ← (Z) I/O(P,b) ← 1 I/O(P,b) ← 0 Rd(n+1) ← Rd(n), Rd(0) ← 0 Rd(n) ← ...

  • Page 7

    ... Lead Pitch 0.50mm, Quad Flat No-lead/Micro Lead Frame Package (QFN/MLF) 1062FS–AVR–07/06 Ordering Code Package ATtiny28L-4AC 32A ATtiny28L-4PC 28P3 ATtiny28L-4MC 32M1-A ATtiny28L-4AI 32A (2) ATtiny28L-4AU 32A ATtiny28L-4PI 28P3 (2) ATtiny28L-4PU 28P3 ATtiny28L-4MI 32M1-A (2) ATtiny28L-4MU 32M1-A ATtiny28V-1AC 32A ATtiny28V-1PC 28P3 ATtiny28V-1MC 32M1-A ATtiny28V-1AI 32A (2) 32A ATtiny28V-1AU ...

  • Page 8

    ... This package conforms to JEDEC reference MS-026, Variation ABA. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is 0.25 mm per side. Dimensions D1 and E1 are maximum plastic body size dimensions including mold mismatch. 3. Lead coplanarity is 0.10 mm maximum. 2325 Orchard Parkway San Jose, CA 95131 R ATtiny28L PIN 1 IDENTIFIER ...

  • Page 9

    ... Orchard Parkway San Jose, CA 95131 R 1062FS–AVR–07/06 D PIN PLACES 0º ~ 15º REF eB TITLE 28P3, 28-lead (0.300"/7.62 mm Wide) Plastic Dual Inline Package (PDIP) ATtiny28L COMMON DIMENSIONS (Unit of Measure = mm) MIN MAX SYMBOL NOM A – – 4.5724 A1 0.508 – D 34.544 – ...

  • Page 10

    ... Pin TOP VIEW Pin #1 Notch (0. BOTTOM VIEW Note: JEDEC Standard MO-220, Fig. 2 (Anvil Singulation), VHHD-2. 2325 Orchard Parkway San Jose, CA 95131 R ATtiny28L TITLE 32M1-A, 32-pad 1.0 mm Body, Lead Pitch 0.50 mm, 3 ...

  • Page 11

    ... Errata All revisions 1062FS–AVR–07/06 No known errata. ATtiny28L/V 11 ...

  • Page 12

    ... Datasheet Revision History Rev – 01/06G Rev – 01/06G Rev – 03/05F ATtiny28L/V 12 Please note that the referring page numbers in this section are referred to this docu- ment. The referring revision in this section are referring to the document revision. 1. Updated chapter layout. 2. Updated “Ordering Information” on page 7. ...

  • Page 13

    ... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2006 Atmel Corporation. All rights reserved. ATMEL ers, are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of oth- ers. Atmel Operations ...