AT90PWM3B-16MU Atmel, AT90PWM3B-16MU Datasheet - Page 36
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AT90PWM3B-16MU
Manufacturer Part Number
AT90PWM3B-16MU
Description
IC MCU AVR RISC 8K FLASH 32-QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM3B-16SU.pdf
(361 pages)
Specifications of AT90PWM3B-16MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
27
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-QFN
Package
32QFN EP
Device Core
AVR
Family Name
90P
Maximum Speed
16 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
27
Interface Type
SPI/USART
On-chip Adc
11-chx10-bit
Number Of Timers
2
Processor Series
AT90PWMx
Core
AVR8
Data Ram Size
512 B
Maximum Clock Frequency
16 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRFBKIT, ATAVRISP2
Minimum Operating Temperature
- 40 C
On-chip Dac
10 bit, 1 Channel
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK520 - ADAPTER KIT FOR 90PWM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90PWM3B-16MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT90PWM3B-16MUR
Manufacturer:
TI
Quantity:
1 829
- Current page: 36 of 361
- Download datasheet (7Mb)
7.6.2
7.7
7.8
36
128 kHz Internal Oscillator
External Clock
AT90PWM2/3/2B/3B
PLL Control and Status Register – PLLCSR
Figure 7-5.
• Bit 7..3 – Res: Reserved Bits
These bits are reserved bits in the AT90PWM2/2B/3/3B and always read as zero.
• Bit 2 – PLLF: PLL Factor
The PLLF bit is used to select the division factor of the PLL.
If PLLF is set, the PLL output is 64Mhz.
If PLLF is clear, the PLL output is 32Mhz.
• Bit 1 – PLLE: PLL Enable
When the PLLE is set, the PLL is started and if not yet started the internal RC Oscillator is
started as PLL reference clock. If PLL is selected as a system clock source the value for this bit
is always 1.
• Bit 0 – PLOCK: PLL Lock Detector
When the PLOCK bit is set, the PLL is locked to the reference clock, and it is safe to enable
CLK
The 128 kHz internal Oscillator is a low power Oscillator providing a clock of 128 kHz. The fre-
quency is nominal at 3V and 25°C. This clock is used by the Watchdog Oscillator.
To drive the device from an external clock source, XTAL1 should be driven as shown in
7-6. To run the device on an external clock, the CKSEL Fuses must be programmed to “0000”.
Bit
$29 ($29)
Read/Write
Initial Value
PLL
XTAL1
XTAL2
for PSC. After the PLL is enabled, it takes about 100 ms for the PLL to lock.
RC OSCILLATOR
OSCCAL
8 MHz
PCK Clocking System AT90PWM2B/3B
OSCILLATORS
R
7
–
0
R
6
–
0
CKSEL3..0
R
5
–
0
DIVIDE
BY 8
R
4
–
0
PLLE
PLL
64x
R
3
–
0
Detector
Lock
DIVIDE
DIVIDE
PLLF
PLLF
BY 2
BY 4
R/W
2
0
PLLE
R/W
0/1
1
PLOCK
CLK
PLOCK
R
0
0
CK
PLL
SOURCE
4317J–AVR–08/10
PLLCSR
Figure
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