AT90PWM316-16SUR Atmel, AT90PWM316-16SUR Datasheet - Page 29
![MCU AVR 16K FLASH 16MHZ 32-SOIC](/photos/7/29/72992/313-32-soic_sml.jpg)
AT90PWM316-16SUR
Manufacturer Part Number
AT90PWM316-16SUR
Description
MCU AVR 16K FLASH 16MHZ 32-SOIC
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM216-16SU.pdf
(359 pages)
Specifications of AT90PWM316-16SUR
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
16KB (16K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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-SOIC (7.5mm Width)
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOICATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number
Manufacturer
Quantity
Price
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7.1.3
7.1.4
7.1.5
7.2
7710E–AVR–08/10
Clock Sources
Flash Clock – clk
PLL Clock – clk
ADC Clock – clk
The Flash clock controls operation of the Flash interface. The Flash clock is usually active simul-
taneously with the CPU clock.
The PLL clock allows the PSC modules to be clocked directly from a 64/32 MHz clock. A 16 MHz
clock is also derived for the CPU.
The ADC is provided with a dedicated clock domain. This allows halting the CPU and I/O clocks
in order to reduce noise generated by digital circuitry. This gives more accurate ADC conversion
results.
The device has the following clock source options, selectable by Flash Fuse bits as illustrated by
Table 7-1
the appropriate modules.
Table 7-1.
The various choices for each clocking option is given in the following sections. When the CPU
wakes up from Power-down or Power-save, the selected clock source is used to time the start-
up, ensuring stable Oscillator operation before instruction execution starts. When the CPU starts
from reset, there is an additional delay allowing the power to reach a stable level before starting
normal operation. The Watchdog Oscillator is used for timing this real-time part of the start-up
time. The number of WDT Oscillator cycles used for each time-out is shown in
PLL
ADC
Device Clocking Option
External Crystal/Ceramic Resonator
PLL output divided by 4 : 16 MHz / PLL driven by External
Crystal/Ceramic Resonator
PLL output divided by 4 : 16 MHz / PLL driven by External
Crystal/Ceramic Resonator
Reserved
PLL output divided by 4 : 16 MHz
Calibrated Internal RC Oscillator
PLL output divided by 4 : 16 MHz / PLL driven by External
clock
External Clock
FLASH
1.For all fuses “1” means unprogrammed while “0” means programmed
2.Ext Osc : External Osc
3.RC Osc : Internal RC Oscillator
4.Ext Clk : External Clock Input
The clock from the selected source is input to the AVR clock generator, and routed to
Device Clocking Options Select AT90PWM216/316
System
Clock
Ext Osc
Ext Osc
PLL / 4
N/A
PLL / 4
RC Osc
PLL / 4
Ext Clk
AT90PWM216/316
(2)
PLL Input
RC Osc
Ext Osc
Ext Osc
N/A
RC Osc
RC Osc
Ext Clk
RC Osc
(4)
(3)
Table
1111 - 1000
0111- 0110
CKSEL3..0
0100
0101
0011
0010
0001
0000
7-2. The
(1)
29
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