AT90S8515-8AC Atmel, AT90S8515-8AC Datasheet - Page 35
![IC MCU 8K FLSH 8MHZ 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
AT90S8515-8AC
Manufacturer Part Number
AT90S8515-8AC
Description
IC MCU 8K FLSH 8MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® 90Sr
Datasheets
1.AT90S8515-4AC.pdf
(112 pages)
2.AT90S8515-4AC.pdf
(4 pages)
3.AT90S8515-4AC.pdf
(4 pages)
Specifications of AT90S8515-8AC
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90S8515-8AC
Manufacturer:
ATM
Quantity:
10
AT90S8515
(TCCR1A and TCCR1B). The interrupt enable/disable settings for Timer/Counter1 are
found in the Timer/Counter Interrupt Mask Register (TIMSK).
When Timer/Counter1 is externally clocked, the external signal is synchronized with the
oscillator frequency of the CPU. To assure proper sampling of the external clock, the
minimum time between two external clock transitions must be at least one internal CPU
clock period. The external clock signal is sampled on the rising edge of the internal CPU
clock.
The 16-bit Timer/Counter1 features both a high-resolution and a high-accuracy usage
with the lower prescaling opportunities. Similarly, the high prescaling opportunities make
the Timer/Counter1 useful for lower speed functions or exact timing functions with infre-
quent actions.
The Timer/Counter1 supports two Output Compare functions using the Output Compare
Register 1 A and B (OCR1A and OCR1B) as the data sources to be compared to the
Timer/Counter1 contents. The Output Compare functions include optional clearing of
the counter on compareA match and actions on the Output Compare pins on both com-
pare matches.
Timer/Counter1 can also be used as an 8-, 9- or 10-bit Pulse Width Modulator. In this
mode, the counter and the OCR1A/OCR1B registers serve as a dual, glitch-free, stand-
alone PWM with centered pulses. Refer to page 47 for a detailed description of this
function.
The Input Capture function of Timer/Counter1 provides a capture of the Timer/Counter1
contents to the Input Capture Register (ICR1), triggered by an external event on the
input capture pin (ICP). The actual capture event settings are defined by the
Timer/Counter1 Control Register (TCCR1B). In addition, the Analog Comparator can be
set to trigger the Input Capture. Refer to “Analog Comparator” on page 59 for details on
this. The ICP pin logic is shown in Figure 31.
Figure 31. ICP Pin Schematic Diagram
If the Noise Canceler function is enabled, the actual trigger condition for the capture
event is monitored over four samples and all four must be equal to activate the capture
flag.
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