AT90USB646-MU Atmel, AT90USB646-MU Datasheet - Page 146

• Manufacturer Part Number: AT90USB646-MU
• Description: IC AVR MCU 64K 64QFN
• Manufacturer: Atmel
• Series: AVR® 90USBr

Specifications of AT90USB646-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 48
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• Processor Series: 90USB
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, TWI, USART, USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 4
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Cpu Family: AT90
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Total Internal Ram Size: 4KB
• # I/os (max): 48
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: QFN EP
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATSTK525 - KIT STARTER FOR AT90USBAT90USBKEY2 - KIT DEMO FOR AT90USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AT90USB646-16MU; AT90USB646-16MU

14.10.13 Output Compare Register 3 B – OCR3BH and OCR3BL
14.10.14 Output Compare Register 3 C – OCR3CH and OCR3CL
14.10.15 Input Capture Register 1 – ICR1H and ICR1L
14.10.16 Input Capture Register 3 – ICR3H and ICR3L
14.10.17 Timer/Counter1 Interrupt Mask Register – TIMSK1
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AT90USB64/128
The Output Compare Registers contain a 16-bit value that is continuously compared with the
counter value (TCNTn). A match can be used to generate an Output Compare interrupt, or to
generate a waveform output on the OCnx pin.
The Output Compare Registers are 16-bit in size. To ensure that both the high and low bytes are
written simultaneously when the CPU writes to these registers, the access is performed using an
8-bit temporary High Byte Register (TEMP). This temporary register is shared by all the other
16-bit registers.
The Input Capture is updated with the counter (TCNTn) value each time an event occurs on the
ICPn pin (or optionally on the Analog Comparator output for Timer/Counter1). The Input Capture
can be used for defining the counter TOP value.
The Input Capture Register is 16-bit in size. To ensure that both the high and low bytes are read
simultaneously when the CPU accesses these registers, the access is performed using an 8-bit
temporary High Byte Register (TEMP). This temporary register is shared by all the other 16-bit
registers.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
See “Accessing 16-bit Registers” on page 119.
7
OCR3B[15:8]
OCR3B[7:0]
R/W
0
7
OCR3C[15:8]
OCR3C[7:0]
R/W
0
7
ICR1[15:8]
ICR1[7:0]
R/W
0
7
ICR3[15:8]
ICR3[7:0]
R/W
0
7
–
R
0
See “Accessing 16-bit Registers” on page 119.
6
R/W
0
6
R/W
0
6
R/W
0
6
R/W
0
6
–
R
0
5
R/W
0
5
R/W
0
5
R/W
0
5
R/W
0
5
ICIE1
R/W
0
4
R/W
0
4
R/W
0
4
R/W
0
4
R/W
0
4
–
R
0
3
R/W
0
3
R/W
0
3
R/W
0
3
R/W
0
3
OCIE1
C
R/W
0
2
R/W
0
2
R/W
0
2
R/W
0
2
R/W
0
2
OCIE1B
R/W
0
1
0
1
0
1
0
1
0
R/W
R/W
R/W
R/W
OCIE1A
R/W
1
0
0
R/W
0
0
R/W
0
0
R/W
0
0
R/W
0
0
TOIE1
R/W
0
OCR3BH
OCR3BL
OCR3CH
OCR3CL
ICR1H
ICR1L
ICR3H
ICR3L
TIMSK1
7593K–AVR–11/09