| Flash (Kbytes) | 8 |
| EEPROM (Kbytes) | 0.5 |
| SRAM (Bytes) | 512 |
| Max I/O Pins | 19 |
| F.max (MHz) | 16 |
| Analog Comparator | Yes |
| 16-bit Timers | 1 |
| 8-bit Timer | 1 |
| Brown Out Detector | Yes |
| Ext Interrupts | 4 |
| Hardware Multiplier | Yes |
| Interrupts | 29 |
| On Chip Oscillator | Yes |
| Self Program Memory | Yes |
| RTC | Yes |
| SPI | 1 |
| UART | Yes |
| Vcc (V) | 2.7-5.5 |
| Watchdog | Yes |
| ISP | Yes |
| Packages | SOIC 24 |
Specially designed for Lamp ballast and Motor Control applications, the AT90PWM2B AVR microcontroller features 8 KBytes Flash memory, 7-channel advanced PWM, 8-channel 8-bit ADC, two or three 12-bit High Speed PSC (Power Stage Controllers) with 4-bit Resolution Enhancement and DALI protocol support.
The AT90PWM2/2B/3/3B is a low-power CMOS 8-bit microcontroller based on the AVR
enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the AT90PWM2/2B/3/3B achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
High Performance, Low Power AVR (R) 8-bit Microcontroller
Advanced RISC Architecture
– 129 Powerful Instructions - Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 1 MIPS throughput per MHz
– On-chip 2-cycle Multiplier
Data and Non-Volatile Program Memory
– 8K Bytes Flash of In-System Programmable Program Memory
Endurance: 10,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
– 512 Bytes of In-System Programmable EEPROM
Endurance: 100,000 Write/Erase Cycles
– 512 Bytes Internal SRAM
– Programming Lock for Flash Program and EEPROM Data Security
On Chip Debug Interface (debugWIRE)
Peripheral Features
– Two or three 12-bit High Speed PSC (Power Stage Controllers) with 4-bit
Resolution Enhancement
Non Overlapping Inverted PWM Output Pins With Flexible Dead-Time
Variable PWM duty Cycle and Frequency
Synchronous Update of all PWM Registers
Auto Stop Function for Event Driven PFC Implementation
Less than 25 Hz Step Width at 150 kHz Output Frequency
PSC2 with four Output Pins and Output Matrix
– One 8-bit General purpose Timer/Counter with Separate Prescaler and Capture
Mode
– One 16-bit General purpose Timer/Counter with Separate Prescaler, Compare
Mode and Capture Mode
– Programmable Serial USART
Standard UART mode
16/17 bit Biphase Mode for DALI Communications
– Master/Slave SPI Serial Interface
– 10-bit ADC
Up To 11 Single Ended Channels and 2 Fully Differential ADC Channel Pairs
Programmable Gain (5x, 10x, 20x, 40x on Differential Channels)
Internal Reference Voltage
– 10-bit DAC
– Two or three Analog Comparator with Resistor-Array to Adjust Comparison
Voltage
– 4 External Interrupts
– Programmable Watchdog Timer with Separate On-Chip Oscillator
Special Microcontroller Features
– Low Power Idle, Noise Reduction, and Power Down Modes
– Power On Reset and Programmable Brown Out Detection
– Flag Array in Bit-programmable I/O Space (4 bytes)
| Speed (MHz) | Power Supply | Ordering Code | Package | Operation Range |
| 16 | 2.7 - 5.5V | AT90PWM2B-16SE | SO24 | Engineering Samples |
| 16 | 2.7 - 5.5V | AT90PWM2B-16SU | SO24 | Extended (-40°C to 105°C) |